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Weather in Boulder for a week

Current time in Boulder:

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Local time.
Time zone: GMT -6
Summertime (plus one hour)
* weather indicated in local time
Sunday, May 18, 2025
The Sun:  Sunrise 05:52, Sunset 20:59.
The Moon:  Moonrise 01:53, Moonset 10:35, Moon phase: waning gibbous waning gibbous
 Geomagnetic Field: Minor Storm

in the eveningfrom 19:00 to 00:00Sometimes short-term rains
Air temperature:
 +2...+5 °CThe air temperature will go downprecipitation is expected
Weather patterns and meteorological conditions:
Sometimes short-term rains
northwest
Wind: moderate breeze, northwest, speed 14-25 km/h
Wind gusts: 54 km/h
Relative humidity: 55-64%
Cloudiness: 100%
Atmospheric pressure: 840-841 hPa
Amount of precipitations:  0,2 mm

Monday, May 19, 2025
The Sun:  Sunrise 05:51, Sunset 21:00.
The Moon:  Moonrise 02:19, Moonset 11:51, Moon phase: waning gibbous waning gibbous
 Geomagnetic Field: Minor Storm
 UV index: 7,6 (High)

at nightfrom 00:01 to 06:00Light cloud cover in the sky, no precipitation
Air temperature:
 -2...+2 °CThe air temperature will go down
Weather patterns and meteorological conditions:
Light cloud cover in the sky, no precipitation
northwest
Wind: gentle breeze, northwest, speed 7-14 km/h
Wind gusts: 32 km/h
Relative humidity: 69-74%
Cloudiness: 60%
Atmospheric pressure: 841-844 hPa

in the morningfrom 06:01 to 12:00Light cloud cover in the sky, no precipitation
Air temperature:
 -2...+6 °CThe temperature will rise
Weather patterns and meteorological conditions:
Light cloud cover in the sky, no precipitation
western
Wind: gentle breeze, western, speed 7-18 km/h
Wind gusts: 40 km/h
Relative humidity: 49-73%
Cloudiness: 56%
Atmospheric pressure: 844-847 hPa

by dayfrom 12:01 to 18:00Cloudy sky, no precipitation
Air temperature:
 +8...+11 °CThe temperature will rise
Weather patterns and meteorological conditions:
Cloudy sky, no precipitation
western
Wind: gentle breeze, western, speed 14-18 km/h
Wind gusts: 36 km/h
Relative humidity: 38-47%
Cloudiness: 92%
Atmospheric pressure: 844-845 hPa

in the eveningfrom 18:01 to 00:00Sometimes short-term rains
Air temperature:
 +5...+10 °CThe air temperature will go downprecipitation is expected
Weather patterns and meteorological conditions:
Sometimes short-term rains
western
Wind: gentle breeze, western, speed 7-18 km/h
Wind gusts: 32 km/h
Relative humidity: 39-70%
Cloudiness: 100%
Atmospheric pressure: 844 hPa
Amount of precipitations:  0,1 mm

Tuesday, May 20, 2025
The Sun:  Sunrise 05:50, Sunset 21:01.
The Moon:  Moonrise 02:42, Moonset 13:07, Moon phase: in its last quarter in its last quarter
 Geomagnetic Field: Unstable
 UV index: 7,1 (High)

at nightfrom 00:01 to 06:00Cloudy sky, no precipitation
Air temperature:
 0...+4 °CThe air temperature will go down
Weather patterns and meteorological conditions:
Cloudy sky, no precipitation
southwest
Wind: light breeze, southwest, speed 7-11 km/h
Wind gusts: 32 km/h
Relative humidity: 76-82%
Cloudiness: 99%
Atmospheric pressure: 843-844 hPa

in the morningfrom 06:01 to 12:00Cloudy sky, no precipitation
Air temperature:
 0...+7 °CThe temperature will rise
Weather patterns and meteorological conditions:
Cloudy sky, no precipitation
western
Wind: moderate breeze, western, speed 7-22 km/h
Wind gusts: 40 km/h
Relative humidity: 57-82%
Cloudiness: 100%
Atmospheric pressure: 843-845 hPa

by dayfrom 12:01 to 18:00Cloudy sky, no precipitation
Air temperature:
 +9...+10 °CThe temperature will rise
Weather patterns and meteorological conditions:
Cloudy sky, no precipitation
western
Wind: moderate breeze, western, speed 25 km/h
Wind gusts: 50 km/h
Relative humidity: 37-51%
Cloudiness: 69%
Atmospheric pressure: 845-847 hPa

in the eveningfrom 18:01 to 00:00Light cloud cover in the sky, no precipitation
Air temperature:
 +3...+9 °CThe air temperature will go down
Weather patterns and meteorological conditions:
Light cloud cover in the sky, no precipitation
northwest
Wind: moderate breeze, northwest, speed 7-25 km/h
Wind gusts: 47 km/h
Relative humidity: 43-76%
Cloudiness: 25%
Atmospheric pressure: 845-848 hPa

Wednesday, May 21, 2025
The Sun:  Sunrise 05:49, Sunset 21:02.
The Moon:  Moonrise 03:01, Moonset 14:24, Moon phase: in its last quarter in its last quarter
 Geomagnetic Field: Unstable
 UV index: 6,8 (High)

at nightfrom 00:01 to 06:00Cloudy sky, no precipitation
Air temperature:
 -1...+2 °CThe air temperature will go down
Weather patterns and meteorological conditions:
Cloudy sky, no precipitation
northwest
Wind: light breeze, northwest, speed 7 km/h
Wind gusts: 14 km/h
Relative humidity: 81-82%
Cloudiness: 79%
Atmospheric pressure: 845-848 hPa

in the morningfrom 06:01 to 12:00Cloudy sky, no precipitation
Air temperature:
 -1...+7 °CThe temperature will rise
Weather patterns and meteorological conditions:
Cloudy sky, no precipitation
western
Wind: gentle breeze, western, speed 7-18 km/h
Wind gusts: 36 km/h
Relative humidity: 45-81%
Cloudiness: 100%
Atmospheric pressure: 847-849 hPa

by dayfrom 12:01 to 18:00Cloudy sky, no precipitation
Air temperature:
 +8...+11 °CThe temperature will rise
Weather patterns and meteorological conditions:
Cloudy sky, no precipitation
western
Wind: moderate breeze, western, speed 18-22 km/h
Wind gusts: 36 km/h
Relative humidity: 37-41%
Cloudiness: 100%
Atmospheric pressure: 849-851 hPa

in the eveningfrom 18:01 to 00:00Clear skies, no precipitation
Air temperature:
 +4...+10 °CThe air temperature will go down
Weather patterns and meteorological conditions:
Clear skies, no precipitation
northwest
Wind: moderate breeze, northwest, speed 4-22 km/h
Wind gusts: 36 km/h
Relative humidity: 40-85%
Cloudiness: 67%
Atmospheric pressure: 848-849 hPa

Thursday, May 22, 2025
The Sun:  Sunrise 05:48, Sunset 21:03.
The Moon:  Moonrise 03:20, Moonset 15:43, Moon phase: in its last quarter in its last quarter
 Geomagnetic Field: Quiet
 UV index: 6,4 (High)

at nightfrom 00:01 to 06:00Cloudy sky, no precipitation
Air temperature:
 0...+3 °CThe air temperature will go down
Weather patterns and meteorological conditions:
Cloudy sky, no precipitation
northwest
Wind: light air, northwest, speed 4 km/h
Wind gusts: 11 km/h
Relative humidity: 86-95%
Cloudiness: 100%
Atmospheric pressure: 844-848 hPa

in the morningfrom 06:01 to 12:00Sometimes short-term rains
Air temperature:
 +2...+10 °CThe temperature will riseprecipitation is expected
Weather patterns and meteorological conditions:
Sometimes short-term rains
southwest
Wind: light breeze, southwest, speed 4-7 km/h
Wind gusts: 18 km/h
Relative humidity: 53-82%
Cloudiness: 100%
Atmospheric pressure: 844-848 hPa
Amount of precipitations:  0,1 mm

by dayfrom 12:01 to 18:00Sometimes short-term rains
Air temperature:
 +12...+13 °CThe temperature will riseprecipitation is expected
Weather patterns and meteorological conditions:
Sometimes short-term rains
southwest
Wind: light breeze, southwest, speed 7-11 km/h
Wind gusts: 29 km/h
Relative humidity: 50-59%
Cloudiness: 100%
Atmospheric pressure: 845-848 hPa
Amount of precipitations:  0,8 mm

in the eveningfrom 18:01 to 00:00Sometimes short-term rains
Air temperature:
 +6...+12 °CThe air temperature will go downprecipitation is expected
Weather patterns and meteorological conditions:
Sometimes short-term rains
northwest
Wind: light breeze, northwest, speed 7-11 km/h
Wind gusts: 14 km/h
Relative humidity: 55-85%
Cloudiness: 100%
Atmospheric pressure: 845-847 hPa
Amount of precipitations:  0,6 mm

Friday, May 23, 2025
The Sun:  Sunrise 05:47, Sunset 21:05.
The Moon:  Moonrise 03:38, Moonset 17:05, Moon phase: waning crescent waning crescent
 Geomagnetic Field: Quiet

at nightfrom 00:01 to 06:00Cloudy sky, no precipitation
Air temperature:
 +3...+6 °CThe air temperature will go down
Weather patterns and meteorological conditions:
Cloudy sky, no precipitation
northwest
Wind: light breeze, northwest, speed 7 km/h
Wind gusts: 11 km/h
Relative humidity: 88-98%
Cloudiness: 70%
Atmospheric pressure: 844-847 hPa

in the morningfrom 06:01 to 12:00Sometimes short-term rains
Air temperature:
 +3...+10 °CThe temperature will riseprecipitation is expected
Weather patterns and meteorological conditions:
Sometimes short-term rains
southwest
Wind: gentle breeze, southwest, speed 7-14 km/h
Wind gusts: 22 km/h
Relative humidity: 52-99%
Cloudiness: 81%
Atmospheric pressure: 845-851 hPa
Amount of precipitations:  0,1 mm

by dayfrom 12:01 to 18:00Sometimes short-term rains
Air temperature:
 +12...+14 °CThe temperature will riseprecipitation is expected
Weather patterns and meteorological conditions:
Sometimes short-term rains
southern
Wind: gentle breeze, southern, speed 11-14 km/h
Wind gusts: 25 km/h
Relative humidity: 42-46%
Cloudiness: 95%
Atmospheric pressure: 848-851 hPa
Amount of precipitations:  0,1 mm

in the eveningfrom 18:01 to 00:00Sometimes short-term rains
Air temperature:
 +9...+15 °CThe air temperature will go downprecipitation is expected
Weather patterns and meteorological conditions:
Sometimes short-term rains
southeast
Wind: light breeze, southeast, speed 4-11 km/h
Wind gusts: 25 km/h
Relative humidity: 47-74%
Cloudiness: 100%
Atmospheric pressure: 844-848 hPa
Amount of precipitations:  1,1 mm

Saturday, May 24, 2025
The Sun:  Sunrise 05:46, Sunset 21:06.
The Moon:  Moonrise 03:58, Moonset 18:29, Moon phase: waning crescent waning crescent
 Geomagnetic Field: Quiet

at nightfrom 00:01 to 06:00Sometimes short-term rains
Air temperature:
 +6...+8 °CThe air temperature will go downprecipitation is expected
Weather patterns and meteorological conditions:
Sometimes short-term rains
southeast
Wind: light breeze, southeast, speed 4-7 km/h
Wind gusts: 14 km/h
Relative humidity: 73-93%
Cloudiness: 100%
Atmospheric pressure: 841-844 hPa
Amount of precipitations:  1,4 mm

in the morningfrom 06:01 to 12:00Sometimes short-term rains
Air temperature:
 +6...+13 °CThe temperature will riseprecipitation is expected
Weather patterns and meteorological conditions:
Sometimes short-term rains
southeast
Wind: light breeze, southeast, speed 4-11 km/h
Wind gusts: 29 km/h
Relative humidity: 68-93%
Cloudiness: 81%
Atmospheric pressure: 841-843 hPa
Amount of precipitations:  0,5 mm

by dayfrom 12:01 to 18:00Rain expected
Air temperature:
 +13...+15 °CThe temperature will riseprecipitation is expected
Weather patterns and meteorological conditions:
Rain expected
western
Wind: gentle breeze, western, speed 11-14 km/h
Wind gusts: 40 km/h
Relative humidity: 63-74%
Cloudiness: 100%
Atmospheric pressure: 841-843 hPa
Amount of precipitations: 5,2 mm

in the eveningfrom 18:01 to 00:00Rain expected
Air temperature:
 +7...+12 °CThe air temperature will go downprecipitation is expected
Weather patterns and meteorological conditions:
Rain expected
western
Wind: gentle breeze, western, speed 11-14 km/h
Wind gusts: 43 km/h
Relative humidity: 66-82%
Cloudiness: 99%
Atmospheric pressure: 841-843 hPa
Amount of precipitations:  1,4 mm

weather in nearby cities

Sometimes short-term rains Basin  +3 °C 
Sometimes short-term rains Jefferson City  +4 °C 
Sometimes short-term rains Clancy  +6 °C 
Sometimes short-term rains Rimini  +4 °C 
Sometimes short-term rains Montana City  +7 °C 
Sometimes short-term rains South Hills  +7 °C 
Cloudy sky, no precipitation Walkerville  +3 °C 
Sometimes short-term rains Helena West Side  +6 °C 
Sometimes short-term rains Helena  +7 °C 
The sky is overcast, no precipitation Whitehall  +6 °C 
Cloudy sky, no precipitation Butte  +3 °C 
Sometimes short-term rains East Helena  +7 °C 
Sometimes short-term rains The Silos  +7 °C 
Sometimes short-term rains Helena Valley Southeast  +8 °C 
Sometimes short-term rains Townsend  +8 °C 
Sometimes short-term rains Helena Valley West Central  +8 °C 
Cloudy sky, no precipitation Deer Lodge  +6 °C 
Cloudy sky, no precipitation Warm Springs  +4 °C 
Sometimes short-term rains Helena Valley Northeast  +8 °C 
Sometimes short-term rains Helena Valley Northwest  +8 °C 
Snow and rain expected Butte-Silver Bow (Balance)  +3 °C 
Cloudy sky, no precipitation Three Forks  +9 °C 
Sometimes short-term rains Ponderosa Pines  +8 °C 
Cloudy sky, no precipitation Anaconda  +3 °C 
Sometimes short-term rains Manhattan  +8 °C 
Sometimes short-term rains Twin Bridges  +7 °C 
Sometimes short-term rains Churchill  +8 °C 
Sometimes short-term rains Sheridan  +5 °C 
Sometimes short-term rains Belgrade  +7 °C 
Cloudy sky, no precipitation Lincoln  +4 °C 
Snow and rain expected Philipsburg  +2 °C 
Cloudy sky, no precipitation Drummond  +6 °C 
Sometimes short-term rains Four Corners  +6 °C 
Sometimes short-term rains White Sulphur Springs  +5 °C 
Sometimes short-term rains King Arthur Park  +6 °C 
Sometimes short-term rains Gallatin Gateway  +5 °C 
Sometimes short-term rains Ennis  +3 °C 
Sometimes short-term rains Bozeman  +5 °C 
Sometimes short-term rains Virginia City  +3 °C 
Sometimes short-term rains Wilsall  +5 °C 
The sky is overcast, no precipitation Cascade  +9 °C 
Sometimes short-term rains Dillon  +6 °C 
Snow and rain expected Big Sky  +1 °C 
Sometimes short-term rains Clyde Park  +6 °C 
Cloudy sky, no precipitation Wisdom  +3 °C 
Light snow expected Big Sky Meadow Village  0 °C 
Sometimes short-term rains Neihart  +2 °C 
Cloudy sky, no precipitation Clinton  +7 °C 

Temperature trend on the chart

DateTemperature,°C711101113555689102-20-10366021257524367106101010131314486791210MaximumAverageMinimumat nightin the morningby dayin the evening18.519.520.521.522.523.524.5-2.502.557.51012.515
weather in Bouldertemperature in BoulderHourly weather forecast in Boulderweather in Boulder todayweather in Boulder tomorrowweather in Boulder for 3 daysweather in Boulder for 5 dayssunrise and sunset in Boulderrising and setting of the Moon in Boulderexact time in Boulder

Additional data

Country:USA
Telephone country code:+1
Location:State of Montana
District:Jefferson County
The name of the city or village:Boulder
Time zone:America/Denver, GMT -6. Summertime (plus one hour)
Coordinates:Latitude: 46.2366; Longitude: -112.121;
Aliases (In other languages):English: BoulderРусский: БоулдерУкраїнська: Боулдер
 
Bolder, Bouldehr, Boulder Valley, bo er de, bwldr, bwwldr mwntana, Болдер, Боулдэр, بولدر, بوولدر، مونتانا, 博尔德
The project was created and is maintained by FDSTAR company, 2025

Weather in Boulder for a week

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Power systems: Weak power grid fluctuations can occur.

Spacecraft operations: Minor impact on satellite operations possible.

Other systems: Migratory animals are affected at this and higher levels; aurora is commonly visible at high latitudes (northern Michigan and Maine).
On land:
The wind picks up dust and small pieces of paper; small branches are moved.
At Sea:
The sea is moderately rough. Waves appear in the form of elongated ridges, some of which are overturned; fairly frequent white horses.
Protection from UV radiation from the Sun is necessary. A UV index reading of 6 to 7 means high risk of harm from unprotected sun exposure. Protection against skin and eye damage is needed. Reduce time in the sun between 10 a.m. and 4 p.m. If outdoors, seek shade and wear sun protective clothing, a wide-brimmed hat, and UV-blocking sunglasses. Generously apply broad spectrum SPF 30+ sunscreen every 2 hours, even on cloudy days, and after swimming or sweating. Bright surfaces, such as sand, water, and snow, will increase UV exposure.
On land:
The thin branches and leaves on the trees fluctuate continuously; wind extends light flag.
At Sea:
Light and short waves are clearly visible at sea. Foam of glassy appearance. Perhaps scattered white horses.
On land:
There is a light continuous stream of wind that is felt by the face; leaves rustle; ordinary vanes moved by wind.
At Sea:
Weak and short waves in the sea, still short, but more pronounced. Crests have a glassy appearance and do not break.
On land:
Direction of wind shown by smoke drift, but not by wind vanes.
At Sea:
There are very weak waves at sea. Ripples with the appearance of scales are formed, but without foam crests.