Idaho Falls weather live forecast

Today's maximum temperature in Idaho Falls is expected to be 35°C. Select a day from the live weather forecast for Idaho Falls, Idaho, USA for more weather parameters.

Thursday
20th Aug
35

12

13

9
Friday
21st Aug
34

17

11

9
Saturday
22nd Aug
31

20

8

8
Sunday
23rd Aug
30

16

9

8
Monday
24th Aug
28

14

7

7

5-day weather forecast updated at 04:00 on Friday 21st August 2026 GMT

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The 5-day weather forecast for Idaho (Idaho Falls) is provided by the Swiss meteorological agency, meteoblue. Find out more about our data sources.

Idaho Falls weather forecast by day

Below are the detailed weather forecasts for Idaho Falls for the next 5 days.

Idaho Falls weather for Thursday 20th August 2026

Expect clear skies in Idaho Falls, Idaho with a maximum temperature of 35°C, high levels of heat & humidity, maximum UV of 9 (Very High) and 13 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 15 kph from the south-west.

35
°C maximum temperature
12
°C minimum temperature
clear skies
13
hours of sunshine
9
UV index (Very High)
0
mm of rainfall expected
H
high heat & humidity
15
kph wind from SW

Idaho Falls weather for Friday 21st August 2026

Expect scattered clouds in Idaho Falls, Idaho with a maximum temperature of 34°C, high levels of heat & humidity, maximum UV of 9 (Very High) and 11 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 14 kph from the south-east.

34
°C maximum temperature
17
°C minimum temperature
scattered clouds
11
hours of sunshine
9
UV index (Very High)
0
mm of rainfall expected
H
high heat & humidity
14
kph wind from SE

Idaho Falls weather for Saturday 22nd August 2026

Expect isolated thunderstorms in Idaho Falls, Idaho with a maximum temperature of 31°C, moderate levels of heat & humidity, maximum UV of 8 (Very High) and 8 hours of bright sunshine. There are 0-2 mm of rainfall expected with 38% chance of some rain and a gentle breeze of 18 kph from the south-west.

31
°C maximum temperature
20
°C minimum temperature
isolated thunderstorms
8
hours of sunshine
8
UV index (Very High)
38
% chance of some rain
<2
mm of rainfall expected
M
moderate heat & humidity
18
kph wind from SW

Idaho Falls weather for Sunday 23rd August 2026

Expect sunshine and showers in Idaho Falls, Idaho with a maximum temperature of 30°C, moderate levels of heat & humidity, maximum UV of 8 (Very High) and 9 hours of bright sunshine. There are 0-2 mm of rainfall expected with 26% chance of some rain and a moderate breeze of 22 kph from the south-west.

30
°C maximum temperature
16
°C minimum temperature
sunshine and showers
9
hours of sunshine
8
UV index (Very High)
26
% chance of some rain
<2
mm of rainfall expected
M
moderate heat & humidity
22
kph wind from SW

Idaho Falls weather for Monday 24th August 2026

Expect sunshine and showers in Idaho Falls, Idaho with a maximum temperature of 28°C, low levels of heat & humidity, maximum UV of 7 (High) and 7 hours of bright sunshine. There are 0-2 mm of rainfall expected with 40% chance of some rain and a moderate breeze of 21 kph from the south-west.