Rainier · first 14 days — live forecast · rest of month — climate corridor
🗺️ 14-day forecast map
Rainier & 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
91°
Tue, Aug 25
Coldest night
46°
Fri, Sep 4
Days with precip
3 / 14
of 14 forecast days
Nicest day
Fri, Sep 4
mild, dry, light wind
The next 4 weekends
plan ahead
Sat 29 – Sun 30 Aug
75° 47°
11% precip chance
Sat 5 – Sun 6 Sep
64° 47°
73% precip chance
Sat 12 – Sun 13 Sep
61° 40°
typical range
Sat 19 – Sun 20 Sep
59° 38°
typical range
30 days — Rainier
14 forecast + 16 climatology
Mon · Today Sunny
85°55°4%⌄
Wind8 mph NE
Gusts17 mph
UV index6 – High
Precip chance4%
Sunrise06:20
Sunset20:06
Tue · Tomorrow Sunny
91°55°4%⌄
Wind11 mph W
Gusts22 mph
UV index5 – Moderate
Precip chance4%
Sunrise06:21
Sunset20:04
Wednesday 26/8 Sunny
80°54°12%⌄
Wind11 mph W
Gusts17 mph
UV index6 – High
Precip chance12%
Sunrise06:22
Sunset20:02
Thursday 27/8 Sunny
76°55°17%⌄
Wind10 mph W
Gusts21 mph
UV index6 – High
Precip chance17%
Sunrise06:24
Sunset20:00
Friday 28/8 Sunny
78°52°13%⌄
Wind4 mph W
Gusts14 mph
UV index7 – High
Precip chance13%
Sunrise06:25
Sunset19:58
Saturday 29/8 Sunny
72°50°11%⌄
Wind7 mph N
Gusts12 mph
UV index6 – High
Precip chance11%
Sunrise06:26
Sunset19:56
Sunday 30/8 Sunny
75°47°9%⌄
Wind4 mph NW
Gusts12 mph
UV index6 – High
Precip chance9%
Sunrise06:27
Sunset19:54
Monday 31/8 Mostly cloudy
71°50°14%⌄
Wind10 mph W
Gusts15 mph
UV index5 – Moderate
Precip chance14%
Sunrise06:29
Sunset19:52
Tuesday 1/9 Showers
70°51°0.5 mm⌄
Wind7 mph W
Gusts16 mph
UV index6 – High
Precip chance40%
Sunrise06:30
Sunset19:51
Wednesday 2/9 Showers
70°51°2.7 mm⌄
Wind10 mph W
Gusts20 mph
UV index6 – High
Precip chance68%
Sunrise06:31
Sunset19:49
Thursday 3/9 Mostly cloudy
66°48°15%⌄
Wind7 mph W
Gusts15 mph
UV index5 – Moderate
Precip chance15%
Sunrise06:33
Sunset19:47
Friday 4/9 Sunny
72°46°8%⌄
Wind5 mph N
Gusts11 mph
UV index6 – High
Precip chance8%
Sunrise06:34
Sunset19:45
Saturday 5/9 Mostly cloudy
58°47°0.9 mm⌄
Wind4 mph SW
Gusts14 mph
UV index3 – Moderate
Precip chance63%
Sunrise06:35
Sunset19:43
Sunday 6/9 Showers
64°51°2.0 mm⌄
Wind6 mph SW
Gusts11 mph
UV index5 – Moderate
Precip chance73%
Sunrise06:36
Sunset19:41
Monday 7/9 Light rain (climatological)
64°42°1.5 mm⌄
Day≈59–70°
Night≈37–48°
Precip≈0.6 in / September
(climatological)Typical range for these dates · 1991–2020
Tuesday 8/9 Partly cloudy (climatological)
69°45°20%⌄
Day≈64–74°
Night≈40–51°
Precip≈0.6 in / September
(climatological)Typical range for these dates · 1991–2020
Wednesday 9/9 Partly cloudy (climatological)
69°45°20%⌄
Day≈64–74°
Night≈40–51°
Precip≈0.6 in / September
(climatological)Typical range for these dates · 1991–2020
Thursday 10/9 Light rain (climatological)
67°44°1.7 mm⌄
Day≈61–72°
Night≈38–49°
Precip≈0.6 in / September
(climatological)Typical range for these dates · 1991–2020
Friday 11/9 Partly cloudy (climatological)
61°40°20%⌄
Day≈55–66°
Night≈35–46°
Precip≈0.6 in / September
(climatological)Typical range for these dates · 1991–2020
Saturday 12/9 Partly cloudy (climatological)
61°40°20%⌄
Day≈55–66°
Night≈35–46°
Precip≈0.6 in / September
(climatological)Typical range for these dates · 1991–2020
Sunday 13/9 Light rain (climatological)
61°40°1.6 mm⌄
Day≈56–66°
Night≈35–46°
Precip≈0.6 in / September
(climatological)Typical range for these dates · 1991–2020
Monday 14/9 Partly cloudy (climatological)
63°42°20%⌄
Day≈58–68°
Night≈36–47°
Precip≈0.6 in / September
(climatological)Typical range for these dates · 1991–2020
Tuesday 15/9 Partly cloudy (climatological)
67°44°20%⌄
Day≈62–73°
Night≈39–50°
Precip≈0.6 in / September
(climatological)Typical range for these dates · 1991–2020
Wednesday 16/9 Light rain (climatological)
70°46°1.6 mm⌄
Day≈65–76°
Night≈41–51°
Precip≈0.6 in / September
(climatological)Typical range for these dates · 1991–2020
Thursday 17/9 Partly cloudy (climatological)
66°44°20%⌄
Day≈61–71°
Night≈38–49°
Precip≈0.6 in / September
(climatological)Typical range for these dates · 1991–2020
Friday 18/9 Partly cloudy (climatological)
61°40°20%⌄
Day≈55–66°
Night≈35–46°
Precip≈0.6 in / September
(climatological)Typical range for these dates · 1991–2020
Saturday 19/9 Light rain (climatological)
57°38°1.3 mm⌄
Day≈51–62°
Night≈33–43°
Precip≈0.6 in / September
(climatological)Typical range for these dates · 1991–2020
Sunday 20/9 Partly cloudy (climatological)
59°39°20%⌄
Day≈54–64°
Night≈34–45°
Precip≈0.6 in / September
(climatological)Typical range for these dates · 1991–2020
Monday 21/9 Partly cloudy (climatological)
63°42°20%⌄
Day≈57–68°
Night≈36–47°
Precip≈0.6 in / September
(climatological)Typical range for these dates · 1991–2020
Tuesday 22/9 Light rain (climatological)
66°43°1.6 mm⌄
Day≈60–71°
Night≈38–49°
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 Rainier, 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.