Boulder Weather Conditions
Current Temperature Level
9 °C
64 AQI
Air quality index is: Moderate
Last Updated: 2025-09-05 01:30 (Local Time)
MapBoulder
Boulder Weather Parameters
4 km/h
2 m/s
171° S
0 %
16 km
0 mm
1022 mb
UV Index0
Suggestions for
TodayBoulder5 Sep.
Umbrella• Optional
Clothing• More Layered
Driving• Enjoy Driving
Sunscreen• ApplyTrending in United States
Abu Dhabi in the Top 10 Most Polluted Cities in the World: Middle East Air Quality Crisis 2025
Boulder 10-Days Weather Forecast
Today
13°C
71 %Saturday
16°C56 %Sunday
18°C56 %Monday
21°C33 %Tuesday
20°C33 %Wednesday
17°C54 %Thursday
18°C52 %Friday
15°C72 %Saturday
15°C53 %Sunday
17°C34 %Partly Cloudy
Periodic cloud cover with temperature at 13 °C. Humidity will be at 71%, and winds will be at 22.3 km/h.19°C / 9°C
Humi.71 %
Prec.0 mm
Sunrise
06:33 AM12hrs 53min
Sunset
07:26 PMTime
Condition
Temp
Humidity
UV
Wind Speed & Dir.
12 AM
Cloudy
15 °C
63 %
0
14 kmph / N
Cloudy 
Feels 14.4 °C
Cover 85 %
Visibility 10 km
1 AM
Partly cloudy
16 °C
51 %
0
9.7 kmph / NNE
Partly cloudyFeels 12.2 °C
Cover 75 %
Visibility 16 km
2 AM
Partly Cloudy
11 °C
80 %
0
7.9 kmph / NNE
Partly Cloudy Feels 11.1 °C
Cover 61 %
Visibility 10 km
3 AM
Cloudy
11 °C
83 %
0
5.4 kmph / NE
Cloudy Feels 10.4 °C
Cover 70 %
Visibility 10 km
4 AM
Cloudy
10 °C
85 %
0
2.5 kmph / NE
Cloudy Feels 10 °C
Cover 67 %
Visibility 10 km
5 AM
Partly Cloudy
10 °C
85 %
0
0.4 kmph / SSW
Partly Cloudy Feels 9.3 °C
Cover 55 %
Visibility 10 km
6 AM
Partly Cloudy
10 °C
86 %
0
1.4 kmph / NNE
Partly Cloudy Feels 8.8 °C
Cover 54 %
Visibility 10 km
7 AM
Partly Cloudy
10 °C
85 %
0
6.1 kmph / NNE
Partly Cloudy Feels 8.7 °C
Cover 56 %
Visibility 10 km
8 AM
Partly Cloudy
10 °C
83 %
0.5
6.5 kmph / NNE
Partly Cloudy Feels 8.5 °C
Cover 58 %
Visibility 10 km
9 AM
Cloudy
11 °C
78 %
1.5
6.5 kmph / ENE
Cloudy Feels 9.9 °C
Cover 64 %
Visibility 10 km
10 AM
Cloudy
13 °C
72 %
3.1
6.8 kmph / E
Cloudy Feels 11.6 °C
Cover 70 %
Visibility 10 km
11 AM
Cloudy
14 °C
68 %
4.7
9 kmph / E
Cloudy Feels 12.8 °C
Cover 72 %
Visibility 10 km
12 PM
Cloudy
15 °C
64 %
6
10.4 kmph / E
Cloudy Feels 14.1 °C
Cover 66 %
Visibility 10 km
1 PM
Partly Cloudy
16 °C
60 %
7.2
11.9 kmph / E
Partly Cloudy Feels 15.6 °C
Cover 46 %
Visibility 10 km
2 PM
Partly Cloudy
17 °C
55 %
6.6
11.5 kmph / E
Partly Cloudy Feels 17 °C
Cover 32 %
Visibility 10 km
3 PM
Sunny
18 °C
52 %
2.7
15.5 kmph / E
SunnyFeels 17.8 °C
Cover 18 %
Visibility 9 km
4 PM
Partly Cloudy
18 °C
51 %
3.2
22.3 kmph / NE
Partly Cloudy Feels 17.4 °C
Cover 35 %
Visibility 10 km
5 PM
Cloudy
17 °C
57 %
1.6
7.2 kmph / NNE
Cloudy Feels 16.6 °C
Cover 69 %
Visibility 10 km
6 PM
Cloudy
16 °C
63 %
0.4
4 kmph / ESE
Cloudy Feels 16 °C
Cover 70 %
Visibility 10 km
7 PM
Sunny
15 °C
68 %
0
6.8 kmph / E
SunnyFeels 15.3 °C
Cover 17 %
Visibility 10 km
8 PM
Clear
14 °C
71 %
0
4 kmph / NE
Clear Feels 14 °C
Cover 24 %
Visibility 10 km
9 PM
Clear
12 °C
72 %
0
6.1 kmph / NW
Clear Feels 12.5 °C
Cover 15 %
Visibility 10 km
10 PM
Clear
11 °C
75 %
0
8.6 kmph / WNW
Clear Feels 11 °C
Cover 13 %
Visibility 10 km
11 PM
Clear
10 °C
76 %
0
9 kmph / WNW
Clear Feels 9.9 °C
Cover 0 %
Visibility 10 km
Today
13°C71 %Saturday
16°C56 %Sunday
18°C56 %Monday
21°C33 %Tuesday
20°C33 %Wednesday
17°C54 %Thursday
18°C52 %Friday
15°C72 %Saturday
15°C53 %Sunday
17°C34 %Temp11 °C
ConditionPartly Cloudy
Humidity80 %
Feels11.1 °C
Cover61 %
Visibility10 km
Wind Speed & Dir.7.9 kmph / NNE
UV0
Boulder 30-Days (September 2025) Weather Forecast
Sun.
Mon.
Tue.
Wed.
Thu.
Fri.
Sat.
1Mon.
26°9 °C
2Tue.
26°9 °C
3Wed.
26°9 °C
4Thu.
26°9 °C
5Today
21°5 °C
6Sat.
24°5 °C
7Sun.
25°9 °C
8Mon.
25°10 °C
9Tue.
23°11 °C
10Wed.
26°11 °C
11Thu.
25°12 °C
12Fri.
24°11 °C
13Sat.
21°9 °C
14Sun.
18°8 °C
15Mon.
22°7 °C
16Tue.
24°8 °C
17Wed.
26°12 °C
18Thu.
21°7 °C
19Fri.
20°7 °C
20Sat.
18°6 °C
21Sun.
18°5 °C
22Mon.
19°6 °C
23Tue.
18°6 °C
24Wed.
19°5 °C
25Thu.
19°5 °C
26Fri.
19°6 °C
27Sat.
19°6 °C
28Sun.
18°5 °C
29Mon.
18°6 °C
30Tue.
17°5 °C
SeptemberWeather Overview
No. of days:
Sunny
11
Cloudy
0
Rainy
19
Snowy
0
The monthly weather averages in Boulder consist of 11 sunny days, 0 cloudy days, 19 rainy days, and 0 snowy days.
Boulder's Locations Weather Conditions
United States's Hottest Cities - September 2025
1.
Tolleson, United States
Partly cloudy
45%
0
7.2 kmph / WNW
2.
Tempe, United States
Partly cloudy
45%
0
3.6 kmph / N
3.
Guadalupe, United States
Partly cloudy
45%
0
7.2 kmph / WNW
4.
Olancha, United States
Clear
21%
0
9.7 kmph / W
5.
Cartago, United States
Clear
21%
0
9.7 kmph / W
6.
Laredo, United States
Clear
57%
0
27.7 kmph / SSE
7.
Surprise, United States
Partly cloudy
48%
0
14 kmph / W
8.
Sun City, United States
Partly cloudy
48%
0
14 kmph / W
9.
Frisco, United States
Clear
46%
0
15.5 kmph / SSW
10.
Palm Springs, United States
Mist
63%
0
4.7 kmph / ESE
Last Updated: 05 Sept 2025, 07:54 AM
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