Idaho Falls, ID 14-Day Forecast
Idaho, United States 🇺🇸
90°
Overcast right now
Today: high 90°, low 55°
Updated 5 hours ago
Idaho Falls weather for the next 14 days
Tuesday, August 18
Patchy rain nearby High 90° Low 58°Precipitation
17%
· 0.01 in
Max wind
18 mph
Humidity
32%
UV index
8 - High
Sunrise / sunset
06:36 AM / 08:27 PM
Wednesday, August 19
Sunny High 91° Low 59°Precipitation
0%
· 0.0 in
Max wind
12 mph
Humidity
20%
UV index
8 - Very High
Sunrise / sunset
06:37 AM / 08:25 PM
Thursday, August 20
Overcast High 96° Low 63°Precipitation
7%
· 0.0 in
Max wind
15 mph
Humidity
17%
UV index
9 - Very High
Sunrise / sunset
06:38 AM / 08:24 PM
Friday, August 21
Sunny High 99° Low 66°Precipitation
36%
· 0.02 in
Max wind
8 mph
Humidity
19%
UV index
9 - Very High
Sunrise / sunset
06:39 AM / 08:22 PM
Saturday, August 22
Overcast High 97° Low 64°Precipitation
57%
· 0.11 in
Max wind
13 mph
Humidity
43%
UV index
8 - Very High
Sunrise / sunset
06:41 AM / 08:21 PM
Sunday, August 23
Sunny High 93° Low 62°Precipitation
2%
· 0.0 in
Max wind
17 mph
Humidity
35%
UV index
8 - Very High
Sunrise / sunset
06:42 AM / 08:19 PM
Monday, August 24
Overcast High 94° Low 63°Precipitation
4%
· 0.0 in
Max wind
7 mph
Humidity
23%
UV index
8 - Very High
Sunrise / sunset
06:43 AM / 08:17 PM
Tuesday, August 25
Sunny High 95° Low 65°Precipitation
57%
· 0.07 in
Max wind
20 mph
Humidity
31%
UV index
8 - Very High
Sunrise / sunset
06:44 AM / 08:16 PM
Wednesday, August 26
Sunny High 95° Low 62°Precipitation
2%
· 0.0 in
Max wind
17 mph
Humidity
33%
UV index
9 - Very High
Sunrise / sunset
06:45 AM / 08:14 PM
Thursday, August 27
Sunny High 96° Low 62°Precipitation
3%
· 0.0 in
Max wind
13 mph
Humidity
33%
UV index
9 - Very High
Sunrise / sunset
06:46 AM / 08:12 PM
Friday, August 28
Overcast High 95° Low 64°Precipitation
9%
· 0.0 in
Max wind
15 mph
Humidity
26%
UV index
8 - Very High
Sunrise / sunset
06:47 AM / 08:11 PM
Saturday, August 29
Overcast High 91° Low 65°Precipitation
9%
· 0.0 in
Max wind
14 mph
Humidity
38%
UV index
7 - High
Sunrise / sunset
06:48 AM / 08:09 PM
Sunday, August 30
Sunny High 91° Low 59°Precipitation
17%
· 0.0 in
Max wind
6 mph
Humidity
46%
UV index
8 - Very High
Sunrise / sunset
06:49 AM / 08:07 PM
Idaho Falls 14-day outlook: the story
The warmest day of Idaho Falls's 14-day outlook is Friday, August 21 with a high near 99°F (37°C); the coolest night comes Monday, August 17, dipping to 55°F (13°C). Temperatures hold fairly steady from week to week. Highs over the next two weeks average 94°F (34°C), about 8°F (4°C) above the typical August high of 86°F (30°C).
Precipitation is most likely on Saturday 22, Tuesday 25; the wettest day looks like Saturday, August 22 with about 0.11 in (2.7 mm) expected. For the weekend, expect Saturday 97°F (36°C) and overcast / Sunday 93°F (34°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 2 of the next 14 days, peaking around Saturday, August 22.
What will be the warmest day in Idaho Falls over the next 14 days?
Friday, August 21, with a forecast high near 99°F (37°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