Idaho Falls, ID 14-Day Forecast
Idaho, United States 🇺🇸
86°
Overcast right now
Today: high 92°, low 56°
Updated 1 hour ago
Idaho Falls weather for the next 14 days
Thursday, August 27
Patchy rain nearby High 92° Low 60°Precipitation
57%
· 0.09 in
Max wind
16 mph
Humidity
35%
UV index
7 - High
Sunrise / sunset
06:46 AM / 08:12 PM
Friday, August 28
Overcast High 85° Low 61°Precipitation
12%
· 0.0 in
Max wind
19 mph
Humidity
43%
UV index
6 - High
Sunrise / sunset
06:47 AM / 08:11 PM
Saturday, August 29
Sunny High 82° Low 57°Precipitation
17%
· 0.01 in
Max wind
20 mph
Humidity
45%
UV index
7 - High
Sunrise / sunset
06:48 AM / 08:09 PM
Sunday, August 30
Sunny High 77° Low 52°Precipitation
36%
· 0.04 in
Max wind
23 mph
Humidity
34%
UV index
6 - High
Sunrise / sunset
06:49 AM / 08:07 PM
Monday, August 31
Sunny High 78° Low 47°Precipitation
0%
· 0.0 in
Max wind
9 mph
Humidity
23%
UV index
7 - High
Sunrise / sunset
06:51 AM / 08:05 PM
Tuesday, September 1
Sunny High 86° Low 54°Precipitation
2%
· 0.0 in
Max wind
20 mph
Humidity
21%
UV index
8 - Very High
Sunrise / sunset
06:52 AM / 08:04 PM
Wednesday, September 2
Sunny High 80° Low 55°Precipitation
2%
· 0.0 in
Max wind
21 mph
Humidity
19%
UV index
7 - High
Sunrise / sunset
06:53 AM / 08:02 PM
Thursday, September 3
Sunny High 73° Low 50°Precipitation
2%
· 0.0 in
Max wind
32 mph
Humidity
22%
UV index
6 - High
Sunrise / sunset
06:54 AM / 08:00 PM
Friday, September 4
Sunny High 75° Low 44°Precipitation
2%
· 0.0 in
Max wind
14 mph
Humidity
21%
UV index
6 - High
Sunrise / sunset
06:55 AM / 07:58 PM
Saturday, September 5
Sunny High 76° Low 49°Precipitation
0%
· 0.0 in
Max wind
24 mph
Humidity
22%
UV index
6 - High
Sunrise / sunset
06:56 AM / 07:57 PM
Sunday, September 6
Sunny High 68° Low 42°Precipitation
1%
· 0.0 in
Max wind
17 mph
Humidity
32%
UV index
6 - High
Sunrise / sunset
06:57 AM / 07:55 PM
Monday, September 7
Sunny High 82° Low 42°Precipitation
1%
· 0.0 in
Max wind
22 mph
Humidity
25%
UV index
7 - High
Sunrise / sunset
06:58 AM / 07:53 PM
Tuesday, September 8
Sunny High 82° Low 50°Precipitation
1%
· 0.0 in
Max wind
6 mph
Humidity
16%
UV index
7 - High
Sunrise / sunset
06:59 AM / 07:51 PM
Idaho Falls 14-day outlook: the story
The warmest day of Idaho Falls's 14-day outlook is Thursday, August 27 with a high near 92°F (33°C); the coolest night comes Monday, September 7, dipping to 42°F (6°C). The trend points cooler: week two runs about 8°F below week one. Highs over the next two weeks average 85°F (29°C), right in line with the typical August high of 86°F (30°C).
Precipitation is most likely on Thursday 27; the wettest day looks like Thursday, August 27 with about 0.09 in (2.4 mm) expected. For the weekend, expect Saturday 82°F (28°C) and sunny / Sunday 77°F (25°C) and sunny.
For typical conditions month by month, see the Idaho Falls climate & average temperatures guide.
Idaho Falls forecast questions
Will it rain in Idaho Falls this week?
The forecast currently shows meaningful precipitation chances on 1 of the next 14 days, peaking around Thursday, August 27.
What will be the warmest day in Idaho Falls over the next 14 days?
Thursday, August 27, with a forecast high near 92°F (33°C).
How accurate is a 14-day forecast for Idaho Falls?
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 Idaho Falls by month
| Month | High | Low | Rain days | Precipitation | Sunshine | Humidity |
|---|---|---|---|---|---|---|
| January | 31° | 15° | 9 | 1.2 in | 6.1 h/day | 77% |
| February | 36° | 19° | 9 | 1.2 in | 7.4 h/day | 70% |
| March | 47° | 26° | 9 | 1.5 in | 9.1 h/day | 62% |
| April | 57° | 33° | 9 | 1.3 in | 10.6 h/day | 51% |
| May | 67° | 42° | 10 | 1.9 in | 12.1 h/day | 49% |
| June | 80° | 52° | 5 | 0.8 in | 13.7 h/day | 39% |
| July | 90° | 60° | 1 | 0.2 in | 14.2 h/day | 29% |
| August | 86° | 58° | 3 | 0.5 in | 12.4 h/day | 34% |
| September | 76° | 49° | 5 | 1.2 in | 11.0 h/day | 42% |
| October | 59° | 37° | 7 | 1.4 in | 9.1 h/day | 56% |
| November | 43° | 25° | 8 | 1.2 in | 7.1 h/day | 67% |
| December | 32° | 17° | 9 | 1.4 in | 5.5 h/day | 74% |
14-day forecasts nearby