Boulder, CO 14-Day Forecast
Colorado, United States 🇺🇸
85°
Sunny right now
Today: high 91°, low 59°
Updated just now
Boulder weather for the next 14 days
Saturday, July 18
Sunny High 94° Low 60°Precipitation
1%
· 0.0 in
Max wind
11 mph
Humidity
31%
UV index
12 - Extreme
Sunrise / sunset
05:47 AM / 08:27 PM
Sunday, July 19
Sunny High 98° Low 61°Precipitation
1%
· 0.0 in
Max wind
12 mph
Humidity
28%
UV index
12 - Extreme
Sunrise / sunset
05:48 AM / 08:26 PM
Monday, July 20
Sunny High 100° Low 65°Precipitation
2%
· 0.0 in
Max wind
17 mph
Humidity
26%
UV index
12 - Extreme
Sunrise / sunset
05:48 AM / 08:25 PM
Tuesday, July 21
Sunny High 93° Low 61°Precipitation
57%
· 0.2 in
Max wind
16 mph
Humidity
44%
UV index
8 - Very High
Sunrise / sunset
05:49 AM / 08:25 PM
Wednesday, July 22
Sunny High 80° Low 59°Precipitation
75%
· 0.75 in
Max wind
8 mph
Humidity
75%
UV index
7 - High
Sunrise / sunset
05:50 AM / 08:24 PM
Thursday, July 23
Patchy rain nearby High 84° Low 60°Precipitation
66%
· 0.14 in
Max wind
7 mph
Humidity
72%
UV index
6 - High
Sunrise / sunset
05:51 AM / 08:23 PM
Friday, July 24
Patchy rain nearby High 81° Low 62°Precipitation
57%
· 0.04 in
Max wind
7 mph
Humidity
71%
UV index
6 - High
Sunrise / sunset
05:52 AM / 08:22 PM
Saturday, July 25
Sunny High 92° Low 59°Precipitation
17%
· 0.01 in
Max wind
8 mph
Humidity
49%
UV index
8 - Very High
Sunrise / sunset
05:53 AM / 08:22 PM
Sunday, July 26
Sunny High 99° Low 66°Precipitation
57%
· 0.19 in
Max wind
13 mph
Humidity
33%
UV index
9 - Very High
Sunrise / sunset
05:54 AM / 08:21 PM
Monday, July 27
Sunny High 98° Low 63°Precipitation
57%
· 0.09 in
Max wind
12 mph
Humidity
41%
UV index
9 - Very High
Sunrise / sunset
05:55 AM / 08:20 PM
Tuesday, July 28
Sunny High 88° Low 62°Precipitation
67%
· 0.9 in
Max wind
18 mph
Humidity
58%
UV index
8 - Very High
Sunrise / sunset
05:55 AM / 08:19 PM
Wednesday, July 29
Patchy rain nearby High 73° Low 57°Precipitation
67%
· 0.22 in
Max wind
7 mph
Humidity
65%
UV index
5 - Moderate
Sunrise / sunset
05:56 AM / 08:18 PM
Thursday, July 30
Sunny High 84° Low 56°Precipitation
17%
· 0.0 in
Max wind
9 mph
Humidity
52%
UV index
7 - High
Sunrise / sunset
05:57 AM / 08:17 PM
Boulder 14-day outlook: the story
The warmest day of Boulder's 14-day outlook is Monday, July 20 with a high near 100°F (38°C); the coolest night comes Thursday, July 30, dipping to 56°F (14°C). The trend points cooler: week two runs about 3°F below week one. Highs over the next two weeks average 91°F (33°C), about 6°F (3°C) above the typical July high of 85°F (30°C).
Precipitation is most likely on Tuesday 21, Wednesday 22, Thursday 23, Friday 24 and beyond; the wettest day looks like Tuesday, July 28 with about 0.9 in (22.8 mm) expected. For the weekend, expect Saturday 94°F (34°C) and sunny / Sunday 98°F (36°C) and sunny.
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 8 of the next 14 days, peaking around Tuesday, July 28.
What will be the warmest day in Boulder over the next 14 days?
Monday, July 20, with a forecast high near 100°F (38°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