Boulder, CO 14-Day Forecast
Colorado, United States 🇺🇸
68°
Sunny right now
Today: high 86°, low 60°
Updated 5 hours ago
Boulder weather for the next 14 days
Thursday, August 27
Sunny High 87° Low 56°Precipitation
57%
· 0.04 in
Max wind
13 mph
Humidity
51%
UV index
9 - Very High
Sunrise / sunset
06:24 AM / 07:40 PM
Friday, August 28
Overcast High 92° Low 62°Precipitation
17%
· 0.01 in
Max wind
12 mph
Humidity
35%
UV index
8 - Very High
Sunrise / sunset
06:25 AM / 07:39 PM
Saturday, August 29
Overcast High 92° Low 67°Precipitation
9%
· 0.0 in
Max wind
17 mph
Humidity
29%
UV index
7 - High
Sunrise / sunset
06:26 AM / 07:37 PM
Sunday, August 30
Overcast High 82° Low 63°Precipitation
37%
· 0.02 in
Max wind
11 mph
Humidity
45%
UV index
6 - High
Sunrise / sunset
06:27 AM / 07:36 PM
Monday, August 31
Overcast High 81° Low 58°Precipitation
75%
· 0.42 in
Max wind
12 mph
Humidity
53%
UV index
6 - High
Sunrise / sunset
06:28 AM / 07:34 PM
Tuesday, September 1
Sunny High 84° Low 54°Precipitation
57%
· 0.07 in
Max wind
9 mph
Humidity
47%
UV index
7 - High
Sunrise / sunset
06:28 AM / 07:33 PM
Wednesday, September 2
Overcast High 84° Low 60°Precipitation
5%
· 0.0 in
Max wind
16 mph
Humidity
29%
UV index
6 - High
Sunrise / sunset
06:29 AM / 07:31 PM
Thursday, September 3
Overcast High 79° Low 61°Precipitation
36%
· 0.02 in
Max wind
20 mph
Humidity
36%
UV index
7 - High
Sunrise / sunset
06:30 AM / 07:30 PM
Friday, September 4
Overcast High 83° Low 61°Precipitation
6%
· 0.0 in
Max wind
10 mph
Humidity
35%
UV index
7 - High
Sunrise / sunset
06:31 AM / 07:28 PM
Saturday, September 5
Overcast High 80° Low 58°Precipitation
57%
· 0.11 in
Max wind
10 mph
Humidity
33%
UV index
6 - High
Sunrise / sunset
06:32 AM / 07:26 PM
Sunday, September 6
Light rain shower High 79° Low 55°Precipitation
68%
· 0.26 in
Max wind
11 mph
Humidity
58%
UV index
6 - High
Sunrise / sunset
06:33 AM / 07:25 PM
Monday, September 7
Overcast High 73° Low 53°Precipitation
44%
· 0.02 in
Max wind
7 mph
Humidity
71%
UV index
5 - Moderate
Sunrise / sunset
06:34 AM / 07:23 PM
Tuesday, September 8
Sunny High 69° Low 40°Precipitation
1%
· 0.0 in
Max wind
8 mph
Humidity
31%
UV index
6 - High
Sunrise / sunset
06:35 AM / 07:21 PM
Boulder 14-day outlook: the story
The warmest day of Boulder's 14-day outlook is Friday, August 28 with a high near 92°F (33°C); the coolest night comes Tuesday, September 8, dipping to 40°F (5°C). The trend points cooler: week two runs about 8°F below week one. Highs over the next two weeks average 86°F (30°C), about 3°F (2°C) above the typical August high of 83°F (28°C).
Precipitation is most likely on Wednesday 26, Thursday 27, Monday 31, Tuesday 1 and beyond; the wettest day looks like Monday, August 31 with about 0.42 in (10.7 mm) expected. For the weekend, expect Saturday 92°F (33°C) and overcast / Sunday 82°F (28°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 6 of the next 14 days, peaking around Monday, August 31.
What will be the warmest day in Boulder over the next 14 days?
Friday, August 28, with a forecast high near 92°F (33°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