Boise, ID 14-Day Forecast
Idaho, United States 🇺🇸
68°
Overcast right now
Today: high 76°, low 52°
Updated 14 min ago
Boise weather for the next 14 days
Wednesday, September 16
Overcast High 82° Low 53°Precipitation
4%
· 0.0 in
Max wind
10 mph
Humidity
28%
UV index
6 - Moderate
Sunrise / sunset
07:25 AM / 07:53 PM
Thursday, September 17
Sunny High 83° Low 58°Precipitation
17%
· 0.01 in
Max wind
18 mph
Humidity
35%
UV index
5 - Moderate
Sunrise / sunset
07:26 AM / 07:52 PM
Friday, September 18
Sunny High 73° Low 58°Precipitation
36%
· 0.01 in
Max wind
15 mph
Humidity
45%
UV index
5 - Moderate
Sunrise / sunset
07:27 AM / 07:50 PM
Saturday, September 19
Sunny High 78° Low 54°Precipitation
1%
· 0.0 in
Max wind
11 mph
Humidity
45%
UV index
6 - Moderate
Sunrise / sunset
07:28 AM / 07:48 PM
Sunday, September 20
Overcast High 80° Low 60°Precipitation
6%
· 0.0 in
Max wind
8 mph
Humidity
31%
UV index
6 - High
Sunrise / sunset
07:29 AM / 07:46 PM
Monday, September 21
Overcast High 81° Low 61°Precipitation
8%
· 0.0 in
Max wind
16 mph
Humidity
27%
UV index
6 - High
Sunrise / sunset
07:31 AM / 07:44 PM
Tuesday, September 22
Sunny High 72° Low 52°Precipitation
2%
· 0.0 in
Max wind
17 mph
Humidity
30%
UV index
6 - High
Sunrise / sunset
07:32 AM / 07:42 PM
Wednesday, September 23
Sunny High 73° Low 48°Precipitation
1%
· 0.0 in
Max wind
6 mph
Humidity
23%
UV index
6 - High
Sunrise / sunset
07:33 AM / 07:41 PM
Thursday, September 24
Sunny High 83° Low 57°Precipitation
0%
· 0.0 in
Max wind
6 mph
Humidity
16%
UV index
7 - High
Sunrise / sunset
07:34 AM / 07:39 PM
Friday, September 25
Sunny High 84° Low 61°Precipitation
2%
· 0.0 in
Max wind
14 mph
Humidity
19%
UV index
7 - High
Sunrise / sunset
07:35 AM / 07:37 PM
Saturday, September 26
Sunny High 76° Low 54°Precipitation
2%
· 0.0 in
Max wind
15 mph
Humidity
35%
UV index
6 - High
Sunrise / sunset
07:36 AM / 07:35 PM
Sunday, September 27
Sunny High 79° Low 57°Precipitation
1%
· 0.0 in
Max wind
11 mph
Humidity
32%
UV index
7 - High
Sunrise / sunset
07:37 AM / 07:33 PM
Monday, September 28
Sunny High 82° Low 58°Precipitation
2%
· 0.0 in
Max wind
13 mph
Humidity
23%
UV index
7 - High
Sunrise / sunset
07:39 AM / 07:31 PM
Boise 14-day outlook: the story
The warmest day of Boise's 14-day outlook is Friday, September 25 with a high near 84°F (29°C); the coolest night comes Wednesday, September 23, dipping to 48°F (9°C). Temperatures hold fairly steady from week to week. Highs over the next two weeks average 79°F (26°C), right in line with the typical September high of 80°F (27°C).
No day in the outlook currently carries a strong precipitation signal. For the weekend, expect Saturday 78°F (26°C) and sunny / Sunday 80°F (27°C) and overcast.
For typical conditions month by month, see the Boise climate & average temperatures guide.
Boise forecast questions
Will it rain in Boise this week?
No day in the current 14-day outlook shows a strong rain signal for Boise.
What will be the warmest day in Boise over the next 14 days?
Friday, September 25, with a forecast high near 84°F (29°C).
How accurate is a 14-day forecast for Boise?
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 Boise by month
| Month | High | Low | Rain days | Precipitation | Sunshine | Humidity |
|---|---|---|---|---|---|---|
| January | 39° | 25° | 10 | 2.0 in | 6.4 h/day | 75% |
| February | 45° | 28° | 10 | 1.6 in | 7.5 h/day | 66% |
| March | 54° | 34° | 10 | 1.6 in | 9.2 h/day | 59% |
| April | 62° | 39° | 7 | 1.3 in | 10.9 h/day | 50% |
| May | 71° | 48° | 8 | 1.6 in | 12.2 h/day | 49% |
| June | 83° | 57° | 3 | 0.9 in | 13.4 h/day | 40% |
| July | 94° | 65° | 1 | 0.1 in | 14.0 h/day | 27% |
| August | 91° | 64° | 1 | 0.1 in | 12.9 h/day | 30% |
| September | 80° | 55° | 3 | 0.5 in | 11.1 h/day | 39% |
| October | 65° | 43° | 5 | 1.0 in | 9.2 h/day | 53% |
| November | 49° | 32° | 8 | 1.4 in | 7.1 h/day | 65% |
| December | 38° | 25° | 12 | 2.2 in | 5.6 h/day | 75% |
14-day forecasts nearby