Boulder, CO 14-Day Forecast
Colorado, United States 🇺🇸
84°
Cloudy right now
Today: high 87°, low 60°
Updated 5 hours ago
Boulder weather for the next 14 days
Tuesday, August 18
Overcast High 88° Low 64°Precipitation
38%
· 0.03 in
Max wind
14 mph
Humidity
33%
UV index
10 - Very High
Sunrise / sunset
06:15 AM / 07:54 PM
Wednesday, August 19
Sunny High 88° Low 62°Precipitation
3%
· 0.0 in
Max wind
12 mph
Humidity
40%
UV index
9 - Very High
Sunrise / sunset
06:16 AM / 07:52 PM
Thursday, August 20
Sunny High 90° Low 62°Precipitation
2%
· 0.0 in
Max wind
13 mph
Humidity
31%
UV index
10 - Very High
Sunrise / sunset
06:17 AM / 07:51 PM
Friday, August 21
Sunny High 93° Low 68°Precipitation
4%
· 0.0 in
Max wind
30 mph
Humidity
29%
UV index
9 - Very High
Sunrise / sunset
06:18 AM / 07:49 PM
Saturday, August 22
Overcast High 92° Low 67°Precipitation
8%
· 0.0 in
Max wind
11 mph
Humidity
28%
UV index
7 - High
Sunrise / sunset
06:19 AM / 07:48 PM
Sunday, August 23
Overcast High 90° Low 65°Precipitation
64%
· 0.17 in
Max wind
10 mph
Humidity
46%
UV index
7 - High
Sunrise / sunset
06:20 AM / 07:46 PM
Monday, August 24
Sunny High 91° Low 64°Precipitation
6%
· 0.0 in
Max wind
11 mph
Humidity
45%
UV index
8 - Very High
Sunrise / sunset
06:21 AM / 07:45 PM
Tuesday, August 25
Overcast High 88° Low 60°Precipitation
36%
· 0.02 in
Max wind
22 mph
Humidity
56%
UV index
8 - Very High
Sunrise / sunset
06:22 AM / 07:44 PM
Wednesday, August 26
Sunny High 87° Low 62°Precipitation
36%
· 0.02 in
Max wind
17 mph
Humidity
47%
UV index
8 - Very High
Sunrise / sunset
06:23 AM / 07:42 PM
Thursday, August 27
Sunny High 92° Low 66°Precipitation
3%
· 0.0 in
Max wind
11 mph
Humidity
35%
UV index
8 - Very High
Sunrise / sunset
06:24 AM / 07:40 PM
Friday, August 28
Overcast High 95° Low 67°Precipitation
6%
· 0.0 in
Max wind
12 mph
Humidity
28%
UV index
8 - Very High
Sunrise / sunset
06:25 AM / 07:39 PM
Saturday, August 29
Overcast High 94° Low 71°Precipitation
9%
· 0.0 in
Max wind
16 mph
Humidity
30%
UV index
7 - High
Sunrise / sunset
06:26 AM / 07:37 PM
Sunday, August 30
Patchy rain nearby High 85° Low 66°Precipitation
17%
· 0.0 in
Max wind
10 mph
Humidity
44%
UV index
7 - High
Sunrise / sunset
06:27 AM / 07:36 PM
Boulder 14-day outlook: the story
The warmest day of Boulder's 14-day outlook is Friday, August 28 with a high near 95°F (35°C); the coolest night comes Tuesday, August 25, dipping to 60°F (16°C). Temperatures hold fairly steady from week to week. Highs over the next two weeks average 90°F (32°C), about 7°F (4°C) above the typical August high of 83°F (28°C).
Precipitation is most likely on Sunday 23; the wettest day looks like Sunday, August 23 with about 0.17 in (4.3 mm) expected. For the weekend, expect Saturday 92°F (33°C) and overcast / Sunday 90°F (32°C) and overcast.
For typical conditions month by month, see the Boulder climate & average temperatures guide.
Boulder forecast questions
Will it rain in Boulder this week?
The forecast currently shows meaningful precipitation chances on 1 of the next 14 days, peaking around Sunday, August 23.
What will be the warmest day in Boulder over the next 14 days?
Friday, August 28, with a forecast high near 95°F (35°C).
How accurate is a 14-day forecast for Boulder?
Days 1-3 are highly reliable, days 4-7 capture the overall pattern well, and days 8-14 indicate trends rather than exact figures - check back as the date approaches; this page refreshes throughout the day.
Average temperatures in Boulder by month
| Month | High | Low | Rain days | Precipitation | Sunshine | Humidity |
|---|---|---|---|---|---|---|
| January | 38° | 17° | 6 | 1.0 in | 7.9 h/day | 61% |
| February | 39° | 15° | 7 | 1.4 in | 9.1 h/day | 61% |
| March | 49° | 24° | 8 | 2.1 in | 10.1 h/day | 61% |
| April | 57° | 31° | 10 | 2.3 in | 10.9 h/day | 58% |
| May | 65° | 41° | 15 | 4.6 in | 11.7 h/day | 64% |
| June | 80° | 54° | 8 | 1.9 in | 13.0 h/day | 52% |
| July | 85° | 59° | 9 | 1.5 in | 13.1 h/day | 50% |
| August | 83° | 58° | 8 | 1.4 in | 12.3 h/day | 50% |
| September | 78° | 52° | 6 | 1.0 in | 11.2 h/day | 47% |
| October | 63° | 38° | 6 | 1.3 in | 9.7 h/day | 53% |
| November | 49° | 27° | 6 | 1.3 in | 8.5 h/day | 57% |
| December | 42° | 20° | 5 | 0.9 in | 7.8 h/day | 56% |
14-day forecasts nearby