Boise · first 14 days — live forecast · rest of month — climate corridor
🗺️ 14-day forecast map
Boise & neighbors — hit play
Every city on the map carries real forecast data from the same models as its city page, refreshed several times a day. The icon is the day's overall look; the number is the afternoon high.
Next 14 days at a glance
from the model forecast
Hottest day
40°
Sun, Aug 23
Coldest night
14°
Thu, Aug 20
Days with precip
1 / 14
of 14 forecast days
Nicest day
Thu, Aug 20
mild, dry, light wind
The next 4 weekends
plan ahead
Sat 15 – Sun 16 Aug
35° 17°
36% precip chance
Sat 22 – Sun 23 Aug
40° 20°
0% precip chance
Sat 29 – Sun 30 Aug
36° 18°
typical range
Sat 5 – Sun 6 Sep
33° 15°
typical range
30 days — Boise
14 forecast + 16 climatology
Thu · Today Sunny
33°17°1%⌄
Wind17 mph S
Gusts23 mph
UV index4 – Moderate
Precip chance1%
Sunrise06:47
Sunset20:51
Fri · Tomorrow Sunny
31°15°0.3 mm⌄
Wind15 mph S
Gusts21 mph
UV index7 – High
Precip chance36%
Sunrise06:48
Sunset20:50
Saturday 15/8 Sunny
33°17°0.8 mm⌄
Wind12 mph SW
Gusts20 mph
UV index8 – High
Precip chance36%
Sunrise06:49
Sunset20:48
Sunday 16/8 Sunny
35°17°1%⌄
Wind9 mph NW
Gusts19 mph
UV index8 – High
Precip chance1%
Sunrise06:50
Sunset20:47
Monday 17/8 Sunny
32°19°2%⌄
Wind13 mph N
Gusts15 mph
UV index6 – Moderate
Precip chance2%
Sunrise06:51
Sunset20:45
Tuesday 18/8 Sunny
33°18°1%⌄
Wind15 mph N
Gusts26 mph
UV index8 – Very high
Precip chance1%
Sunrise06:53
Sunset20:44
Wednesday 19/8 Sunny
29°15°1.4 mm⌄
Wind15 mph NW
Gusts18 mph
UV index7 – High
Precip chance57%
Sunrise06:54
Sunset20:42
Thursday 20/8 Sunny
31°14°1%⌄
Wind10 mph W
Gusts12 mph
UV index8 – Very high
Precip chance1%
Sunrise06:55
Sunset20:41
Friday 21/8 Sunny
35°18°0%⌄
Wind7 mph S
Gusts14 mph
UV index8 – Very high
Precip chance0%
Sunrise06:56
Sunset20:39
Saturday 22/8 Sunny
39°20°0%⌄
Wind8 mph E
Gusts16 mph
UV index9 – Very high
Precip chance0%
Sunrise06:57
Sunset20:37
Sunday 23/8 Sunny
40°21°0%⌄
Wind8 mph E
Gusts17 mph
UV index10 – Very high
Precip chance0%
Sunrise06:58
Sunset20:36
Monday 24/8 Sunny
40°22°1%⌄
Wind12 mph NW
Gusts14 mph
UV index9 – Very high
Precip chance1%
Sunrise06:59
Sunset20:34
Tuesday 25/8 Sunny
39°24°0.2 mm⌄
Wind10 mph NW
Gusts16 mph
UV index9 – Very high
Precip chance17%
Sunrise07:00
Sunset20:32
Wednesday 26/8 Sunny
37°22°0.4 mm⌄
Wind16 mph SW
Gusts19 mph
UV index9 – Very high
Precip chance36%
Sunrise07:01
Sunset20:31
Thursday 27/8 Light rain (climatological)
35°19°1.1 mm⌄
Day≈32–38°
Night≈16–22°
Precip≈0.6 in / August
(climatological)Typical range for these dates · 1991–2020
Friday 28/8 Partly cloudy (climatological)
37°20°20%⌄
Day≈34–40°
Night≈17–23°
Precip≈0.6 in / August
(climatological)Typical range for these dates · 1991–2020
Saturday 29/8 Partly cloudy (climatological)
36°19°20%⌄
Day≈33–39°
Night≈16–22°
Precip≈0.6 in / August
(climatological)Typical range for these dates · 1991–2020
Sunday 30/8 Light rain (climatological)
35°18°1.3 mm⌄
Day≈32–38°
Night≈15–21°
Precip≈0.6 in / August
(climatological)Typical range for these dates · 1991–2020
Monday 31/8 Partly cloudy (climatological)
33°17°20%⌄
Day≈30–36°
Night≈14–20°
Precip≈0.6 in / August
(climatological)Typical range for these dates · 1991–2020
Tuesday 1/9 Partly cloudy (climatological)
27°12°20%⌄
Day≈24–30°
Night≈9–15°
Precip≈0.6 in / September
(climatological)Typical range for these dates · 1991–2020
Wednesday 2/9 Light rain (climatological)
29°14°1.8 mm⌄
Day≈26–32°
Night≈11–17°
Precip≈0.6 in / September
(climatological)Typical range for these dates · 1991–2020
Thursday 3/9 Partly cloudy (climatological)
30°14°20%⌄
Day≈27–33°
Night≈11–17°
Precip≈0.6 in / September
(climatological)Typical range for these dates · 1991–2020
Friday 4/9 Partly cloudy (climatological)
33°16°20%⌄
Day≈30–36°
Night≈13–19°
Precip≈0.6 in / September
(climatological)Typical range for these dates · 1991–2020
Saturday 5/9 Light rain (climatological)
33°16°1.5 mm⌄
Day≈30–36°
Night≈13–19°
Precip≈0.6 in / September
(climatological)Typical range for these dates · 1991–2020
Sunday 6/9 Partly cloudy (climatological)
31°15°20%⌄
Day≈28–34°
Night≈12–18°
Precip≈0.6 in / September
(climatological)Typical range for these dates · 1991–2020
Monday 7/9 Partly cloudy (climatological)
29°14°20%⌄
Day≈26–32°
Night≈11–17°
Precip≈0.6 in / September
(climatological)Typical range for these dates · 1991–2020
Tuesday 8/9 Light rain (climatological)
28°13°0.9 mm⌄
Day≈25–31°
Night≈10–16°
Precip≈0.6 in / September
(climatological)Typical range for these dates · 1991–2020
Wednesday 9/9 Partly cloudy (climatological)
29°14°20%⌄
Day≈26–32°
Night≈11–17°
Precip≈0.6 in / September
(climatological)Typical range for these dates · 1991–2020
Thursday 10/9 Partly cloudy (climatological)
31°15°20%⌄
Day≈28–34°
Night≈12–18°
Precip≈0.6 in / September
(climatological)Typical range for these dates · 1991–2020
Friday 11/9 Light rain (climatological)
33°16°1.8 mm⌄
Day≈30–36°
Night≈13–19°
Precip≈0.6 in / September
(climatological)Typical range for these dates · 1991–2020
How does a 30-day outlook work?
The first 14 days are a live model forecast. The back half of the month shows the typical range for those dates — useful for planning, not a literal prediction.
First 14 days: a real forecast, blended from NBM, ECMWF and GFS runs. Trust it most inside three days; by the second week treat it as a lean, not a promise.
Rest of the month: past day 14 we stop pretending to forecast and switch to the climate corridor — the range those dates have produced over three decades computed directly for Boise, with mild week-to-week wiggle.
Good question for this page: "Is late August usually humid in Chicago?" Bad question: "Do I need an umbrella on the 29th?" — three weeks out no one knows, and that's the honest answer.