Idaho Falls, ID 14-Day Forecast
Idaho, United States 🇺🇸
90°
Sunny right now
Today: high 94°, low 46°
Updated just now
Idaho Falls weather for the next 14 days
Friday, August 7
Sunny High 101° Low 58°Precipitation
0%
· 0.0 in
Max wind
20 mph
Humidity
11%
UV index
8 - Very High
Sunrise / sunset
06:24 AM / 08:43 PM
Saturday, August 8
Sunny High 101° Low 60°Precipitation
1%
· 0.0 in
Max wind
19 mph
Humidity
14%
UV index
8 - Very High
Sunrise / sunset
06:25 AM / 08:42 PM
Sunday, August 9
Sunny High 100° Low 62°Precipitation
1%
· 0.0 in
Max wind
22 mph
Humidity
15%
UV index
8 - High
Sunrise / sunset
06:26 AM / 08:40 PM
Monday, August 10
Sunny High 99° Low 57°Precipitation
1%
· 0.0 in
Max wind
15 mph
Humidity
15%
UV index
9 - Very High
Sunrise / sunset
06:27 AM / 08:39 PM
Tuesday, August 11
Sunny High 99° Low 59°Precipitation
1%
· 0.0 in
Max wind
13 mph
Humidity
24%
UV index
9 - Very High
Sunrise / sunset
06:28 AM / 08:37 PM
Wednesday, August 12
Sunny High 98° Low 63°Precipitation
1%
· 0.0 in
Max wind
21 mph
Humidity
15%
UV index
9 - Very High
Sunrise / sunset
06:29 AM / 08:36 PM
Thursday, August 13
Sunny High 95° Low 60°Precipitation
1%
· 0.0 in
Max wind
15 mph
Humidity
17%
UV index
8 - Very High
Sunrise / sunset
06:31 AM / 08:34 PM
Friday, August 14
Sunny High 95° Low 57°Precipitation
17%
· 0.0 in
Max wind
22 mph
Humidity
31%
UV index
9 - Very High
Sunrise / sunset
06:32 AM / 08:33 PM
Saturday, August 15
Sunny High 92° Low 52°Precipitation
1%
· 0.0 in
Max wind
17 mph
Humidity
29%
UV index
8 - Very High
Sunrise / sunset
06:33 AM / 08:31 PM
Sunday, August 16
Sunny High 94° Low 57°Precipitation
1%
· 0.0 in
Max wind
13 mph
Humidity
16%
UV index
8 - Very High
Sunrise / sunset
06:34 AM / 08:30 PM
Monday, August 17
Partly Cloudy High 78° Low 59°Precipitation
2%
· 0.0 in
Max wind
24 mph
Humidity
23%
UV index
7 - High
Sunrise / sunset
06:35 AM / 08:28 PM
Tuesday, August 18
Sunny High 79° Low 43°Precipitation
1%
· 0.0 in
Max wind
19 mph
Humidity
20%
UV index
7 - High
Sunrise / sunset
06:36 AM / 08:27 PM
Wednesday, August 19
Sunny High 84° Low 49°Precipitation
1%
· 0.0 in
Max wind
18 mph
Humidity
16%
UV index
7 - High
Sunrise / sunset
06:37 AM / 08:25 PM
Idaho Falls 14-day outlook: the story
The warmest day of Idaho Falls's 14-day outlook is Friday, August 7 with a high near 101°F (38°C); the coolest night comes Tuesday, August 18, dipping to 43°F (6°C). The trend points cooler: week two runs about 11°F below week one. Highs over the next two weeks average 99°F (37°C), about 13°F (7°C) above the typical August high of 86°F (30°C).
No day in the outlook currently carries a strong precipitation signal. For the weekend, expect Saturday 101°F (38°C) and sunny / Sunday 100°F (38°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?
No day in the current 14-day outlook shows a strong rain signal for Idaho Falls.
What will be the warmest day in Idaho Falls over the next 14 days?
Friday, August 7, with a forecast high near 101°F (38°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