Boise weather live forecast

Today's maximum temperature in Boise is expected to be 26°C. Select a day from the live weather forecast for Boise, Idaho, USA for more weather parameters.

Sunday
20th Sep
26

15

12

6
Monday
21st Sep
28

15

11

6
Tuesday
22nd Sep
28

17

5

6
Wednesday
23rd Sep
28

15

8

6
Thursday
24th Sep
31

15

9

6

5-day weather forecast updated at 04:00 on Sunday 20th September 2026 GMT

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

Boise weather forecast by day

Below are the detailed weather forecasts for Boise for the next 5 days.

Boise weather for Sunday 20th September 2026

Expect clear skies in Boise, Idaho with a maximum temperature of 26°C, maximum UV of 6 (High) and 12 hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 9 kph from the east.

26
°C maximum temperature
15
°C minimum temperature
clear skies
12
hours of sunshine
6
UV index (High)
0
mm of rainfall expected
26
°C wind chill
9
kph wind from E

Boise weather for Monday 21st September 2026

Expect clear skies in Boise, Idaho with a maximum temperature of 28°C, low levels of heat & humidity, maximum UV of 6 (High) and 11 hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 10 kph from the east.

28
°C maximum temperature
15
°C minimum temperature
clear skies
11
hours of sunshine
6
UV index (High)
0
mm of rainfall expected
L
low heat & humidity
10
kph wind from E

Boise weather for Tuesday 22nd September 2026

Expect broken clouds in Boise, Idaho with a maximum temperature of 28°C, low levels of heat & humidity, maximum UV of 6 (High) and 5 hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 10 kph from the east.

28
°C maximum temperature
17
°C minimum temperature
broken clouds
5
hours of sunshine
6
UV index (High)
0
mm of rainfall expected
L
low heat & humidity
10
kph wind from E

Boise weather for Wednesday 23rd September 2026

Expect scattered clouds in Boise, Idaho with a maximum temperature of 28°C, low levels of heat & humidity, maximum UV of 6 (High) and 8 hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 10 kph from the east.

28
°C maximum temperature
15
°C minimum temperature
scattered clouds
8
hours of sunshine
6
UV index (High)
0
mm of rainfall expected
L
low heat & humidity
10
kph wind from E

Boise weather for Thursday 24th September 2026

Expect scattered clouds in Boise, Idaho with a maximum temperature of 31°C, moderate levels of heat & humidity, maximum UV of 6 (High) and 9 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 13 kph from the east.