Weather Forecast for Boise
Idaho, United States of America
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Current Weather - Boise: 17°C
Current Weather - Boise: 17°C
Idaho, United States of America
Moderate rain
Feels like 15°C
Wind
7 km/h NNE
Humidity
59%
Pressure
1010 mb
UV Index
1
Visibility
10 km
Moderate rain
Thursday, September 03, 2026
High
20°C
Low
12°C
Rain Chance
78%
Hourly Forecast
13°C
13°C
12°C
Day Statistics
Maximum Wind
24 km/h
Humidity
60%
Precipitation
25 mm
UV Index
6
Visibility
9 km
Rain Chance
78%
Snow Chance
0%
Sun & Moon
Sunrise
07:10 AM
Sunset
08:17 PM
Moonrise
11:10 PM
Moonset
02:30 PM
Moon Phase
Last Quarter
Moon Illumination
50%
Air Quality
PM2.5
19.7
μg/m³
PM10
25.5
μg/m³
NO₂
6.4
μg/m³
O₃
61.8
μg/m³
SO₂
1
μg/m³
CO
120.8
μg/m³
Sunny
Friday, September 04, 2026
High
22°C
Low
12°C
Rain Chance
57%
Hourly Forecast
13°C
14°C
13°C
12°C
12°C
13°C
12°C
13°C
13°C
13°C
15°C
16°C
17°C
18°C
20°C
21°C
21°C
22°C
21°C
21°C
19°C
18°C
17°C
16°C
Day Statistics
Maximum Wind
17 km/h
Humidity
51%
Precipitation
2 mm
UV Index
7
Visibility
10 km
Rain Chance
57%
Snow Chance
0%
Sun & Moon
Sunrise
07:12 AM
Sunset
08:15 PM
Moonrise
Does not rise today
Moonset
03:41 PM
Moon Phase
Last Quarter
Moon Illumination
39%
Air Quality
PM2.5
20.3
μg/m³
PM10
22.2
μg/m³
NO₂
6.6
μg/m³
O₃
59.6
μg/m³
SO₂
1.1
μg/m³
CO
127.8
μg/m³
Sunny
Saturday, September 05, 2026
High
24°C
Low
14°C
Rain Chance
57%
Hourly Forecast
17°C
16°C
15°C
15°C
15°C
14°C
14°C
15°C
15°C
16°C
17°C
18°C
20°C
21°C
22°C
23°C
24°C
24°C
24°C
23°C
21°C
19°C
19°C
18°C
Day Statistics
Maximum Wind
18 km/h
Humidity
44%
Precipitation
2 mm
UV Index
6
Visibility
10 km
Rain Chance
57%
Snow Chance
0%
Sun & Moon
Sunrise
07:13 AM
Sunset
08:13 PM
Moonrise
12:01 AM
Moonset
04:44 PM
Moon Phase
Waning Crescent
Moon Illumination
29%
Air Quality
PM2.5
29.5
μg/m³
PM10
30.7
μg/m³
NO₂
10.3
μg/m³
O₃
62.5
μg/m³
SO₂
1.1
μg/m³
CO
164.5
μg/m³
Smoky haze
Sunday, September 06, 2026
High
27°C
Low
14°C
Rain Chance
17%
Hourly Forecast
17°C
16°C
16°C
15°C
15°C
14°C
14°C
14°C
14°C
15°C
17°C
19°C
21°C
23°C
25°C
26°C
27°C
27°C
26°C
25°C
22°C
21°C
20°C
19°C
Day Statistics
Maximum Wind
25 km/h
Humidity
35%
Precipitation
0 mm
UV Index
6
Visibility
10 km
Rain Chance
17%
Snow Chance
0%
Sun & Moon
Sunrise
07:14 AM
Sunset
08:12 PM
Moonrise
01:05 AM
Moonset
05:37 PM
Moon Phase
Waning Crescent
Moon Illumination
20%
Air Quality
PM2.5
40.5
μg/m³
PM10
41.8
μg/m³
NO₂
12.2
μg/m³
O₃
60.9
μg/m³
SO₂
1.3
μg/m³
CO
160.5
μg/m³
Smoky haze
Monday, September 07, 2026
High
25°C
Low
14°C
Rain Chance
57%
Hourly Forecast
18°C
18°C
17°C
17°C
16°C
15°C
15°C
14°C
14°C
15°C
16°C
18°C
20°C
22°C
23°C
24°C
24°C
25°C
24°C
24°C
21°C
19°C
18°C
18°C
Day Statistics
Maximum Wind
22 km/h
Humidity
42%
Precipitation
1 mm
UV Index
6
Visibility
10 km
Rain Chance
57%
Snow Chance
0%
Sun & Moon
Sunrise
07:15 AM
Sunset
08:10 PM
Moonrise
02:20 AM
Moonset
06:19 PM
Moon Phase
Waning Crescent
Moon Illumination
12%
Air Quality
PM2.5
45.1
μg/m³
PM10
46.6
μg/m³
NO₂
18.8
μg/m³
O₃
40
μg/m³
SO₂
1.7
μg/m³
CO
401.6
μg/m³
Sunny
Tuesday, September 08, 2026
High
28°C
Low
15°C
Rain Chance
4%
Hourly Forecast
18°C
18°C
17°C
16°C
16°C
16°C
15°C
16°C
17°C
18°C
20°C
23°C
25°C
26°C
27°C
28°C
28°C
28°C
28°C
27°C
25°C
23°C
22°C
21°C
Day Statistics
Maximum Wind
17 km/h
Humidity
27%
Precipitation
0 mm
UV Index
7
Visibility
10 km
Rain Chance
4%
Snow Chance
0%
Sun & Moon
Sunrise
07:16 AM
Sunset
08:08 PM
Moonrise
03:42 AM
Moonset
06:53 PM
Moon Phase
Waning Crescent
Moon Illumination
6%
Overcast
Wednesday, September 09, 2026
High
28°C
Low
17°C
Rain Chance
6%
Hourly Forecast
20°C
19°C
18°C
18°C
17°C
17°C
17°C
18°C
19°C
20°C
22°C
24°C
25°C
26°C
27°C
28°C
28°C
28°C
28°C
27°C
25°C
24°C
23°C
23°C
Day Statistics
Maximum Wind
18 km/h
Humidity
22%
Precipitation
0 mm
UV Index
7
Visibility
10 km
Rain Chance
6%
Snow Chance
0%
Sun & Moon
Sunrise
07:17 AM
Sunset
08:06 PM
Moonrise
05:06 AM
Moonset
07:20 PM
Moon Phase
New Moon
Moon Illumination
2%
Solar Radiation Data
Shortwave Radiation
431.62
Diffuse Radiation
231.28
DNI
0
GTI
0
Weather Alerts
Flash Flood Watch issued September 3 at 2:06AM MDT until September 4 at 7:00PM MDT by NWS Boise ID
* WHAT...Flash flooding and debris flows caused by excessive rainfall continue to be possible over the Wapiti Burn Area. * WHERE...A portion of southwest Idaho, including the following area, Boise Mountains. * WHEN...Through Friday evening. * IMPACTS...Heavy rainfall over the Wapiti Burn Area is expected up to and during the period of the watch. debris flow. Be sure to stay up to date with information from local authorities. Heavy rainfall could trigger flash flooding or debris flows in and near recent wildfire burn scars. * ADDITIONAL DETAILS... - National Weather Service Meteorologists are forecasting heavy rainfall over the burn scar, which may lead to flash flooding and debris flows. - Some locations that may experience flash flooding include... Grandjean. - https://www.weather.gov/safety/flood
You should monitor later forecasts and be prepared to take action should Flash Flood Warnings be issued.
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