Thomaston · first 14 days — live forecast · rest of month — climate corridor
🗺️ 14-day forecast map
Thomaston & 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°
Fri, Sep 4
Coldest night
21°
Sat, Aug 29
Days with precip
6 / 14
of 14 forecast days
Nicest day
Tue, Sep 1
mild, dry, light wind
The next 4 weekends
plan ahead
Sat 29 – Sun 30 Aug
33° 21°
85% precip chance
Sat 5 – Sun 6 Sep
40° 24°
57% precip chance
Sat 12 – Sun 13 Sep
37° 23°
typical range
Sat 19 – Sun 20 Sep
36° 23°
typical range
30 days — Thomaston
14 forecast + 16 climatology
Fri · Today Showers
31°22°2.2 mm⌄
Wind5 mph SW
Gusts14 mph
UV index7 – High
Precip chance76%
Sunrise07:09
Sunset20:07
Sat · Tomorrow Showers
28°21°8.2 mm⌄
Wind5 mph S
Gusts8 mph
UV index6 – High
Precip chance85%
Sunrise07:10
Sunset20:06
Sunday 30/8 Mostly cloudy
33°21°0.6 mm⌄
Wind6 mph S
Gusts9 mph
UV index8 – Very high
Precip chance38%
Sunrise07:10
Sunset20:05
Monday 31/8 Mostly cloudy
36°23°0.3 mm⌄
Wind4 mph S
Gusts15 mph
UV index8 – Very high
Precip chance36%
Sunrise07:11
Sunset20:03
Tuesday 1/9 Partly cloudy
36°24°5%⌄
Wind5 mph NW
Gusts12 mph
UV index9 – Very high
Precip chance5%
Sunrise07:12
Sunset20:02
Wednesday 2/9 Sunny
37°25°3%⌄
Wind6 mph NW
Gusts15 mph
UV index9 – Very high
Precip chance3%
Sunrise07:12
Sunset20:01
Thursday 3/9 Sunny
39°26°2%⌄
Wind7 mph NW
Gusts20 mph
UV index9 – Very high
Precip chance2%
Sunrise07:13
Sunset20:00
Friday 4/9 Partly cloudy
40°26°3%⌄
Wind6 mph NW
Gusts19 mph
UV index10 – Very high
Precip chance3%
Sunrise07:13
Sunset19:58
Saturday 5/9 Mostly cloudy
40°25°4%⌄
Wind9 mph SE
Gusts11 mph
UV index9 – Very high
Precip chance4%
Sunrise07:14
Sunset19:57
Sunday 6/9 Sunny
40°24°3.3 mm⌄
Wind9 mph N
Gusts18 mph
UV index9 – Very high
Precip chance57%
Sunrise07:15
Sunset19:56
Monday 7/9 Sunny
38°24°0.9 mm⌄
Wind6 mph N
Gusts20 mph
UV index9 – Very high
Precip chance36%
Sunrise07:15
Sunset19:54
Tuesday 8/9 Sunny
36°23°3.8 mm⌄
Wind9 mph N
Gusts23 mph
UV index9 – Very high
Precip chance62%
Sunrise07:16
Sunset19:53
Wednesday 9/9 Fog
36°23°4.9 mm⌄
Wind7 mph SW
Gusts20 mph
UV index9 – Very high
Precip chance71%
Sunrise07:17
Sunset19:52
Thursday 10/9 Showers
35°23°16.4 mm⌄
Wind9 mph SW
Gusts17 mph
UV index8 – Very high
Precip chance81%
Sunrise07:17
Sunset19:50
Friday 11/9 Rain (climatological)
34°22°5.6 mm⌄
Day≈31–37°
Night≈19–25°
Precip≈3.5 in / September
(climatological)Typical range for these dates · 1991–2020
Saturday 12/9 Partly cloudy (climatological)
35°23°20%⌄
Day≈32–38°
Night≈20–26°
Precip≈3.5 in / September
(climatological)Typical range for these dates · 1991–2020
Sunday 13/9 Partly cloudy (climatological)
37°24°20%⌄
Day≈34–40°
Night≈21–27°
Precip≈3.5 in / September
(climatological)Typical range for these dates · 1991–2020
Monday 14/9 Rain (climatological)
36°23°9.1 mm⌄
Day≈33–39°
Night≈20–26°
Precip≈3.5 in / September
(climatological)Typical range for these dates · 1991–2020
Tuesday 15/9 Partly cloudy (climatological)
32°21°20%⌄
Day≈29–35°
Night≈18–24°
Precip≈3.5 in / September
(climatological)Typical range for these dates · 1991–2020
Wednesday 16/9 Partly cloudy (climatological)
32°20°20%⌄
Day≈29–35°
Night≈17–23°
Precip≈3.5 in / September
(climatological)Typical range for these dates · 1991–2020
Thursday 17/9 Rain (climatological)
31°20°6.7 mm⌄
Day≈28–34°
Night≈17–23°
Precip≈3.5 in / September
(climatological)Typical range for these dates · 1991–2020
Friday 18/9 Partly cloudy (climatological)
33°21°20%⌄
Day≈30–36°
Night≈18–24°
Precip≈3.5 in / September
(climatological)Typical range for these dates · 1991–2020
Saturday 19/9 Partly cloudy (climatological)
36°23°20%⌄
Day≈33–39°
Night≈20–26°
Precip≈3.5 in / September
(climatological)Typical range for these dates · 1991–2020
Sunday 20/9 Rain (climatological)
35°23°6.7 mm⌄
Day≈32–38°
Night≈20–26°
Precip≈3.5 in / September
(climatological)Typical range for these dates · 1991–2020
Monday 21/9 Partly cloudy (climatological)
33°21°20%⌄
Day≈30–36°
Night≈18–24°
Precip≈3.5 in / September
(climatological)Typical range for these dates · 1991–2020
Tuesday 22/9 Partly cloudy (climatological)
31°20°20%⌄
Day≈28–34°
Night≈17–23°
Precip≈3.5 in / September
(climatological)Typical range for these dates · 1991–2020
Wednesday 23/9 Rain (climatological)
32°21°8.8 mm⌄
Day≈29–35°
Night≈18–24°
Precip≈3.5 in / September
(climatological)Typical range for these dates · 1991–2020
Thursday 24/9 Partly cloudy (climatological)
33°21°20%⌄
Day≈30–36°
Night≈18–24°
Precip≈3.5 in / September
(climatological)Typical range for these dates · 1991–2020
Friday 25/9 Partly cloudy (climatological)
35°22°20%⌄
Day≈32–38°
Night≈19–25°
Precip≈3.5 in / September
(climatological)Typical range for these dates · 1991–2020
Saturday 26/9 Rain (climatological)
35°22°10.9 mm⌄
Day≈32–38°
Night≈19–25°
Precip≈3.5 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 Thomaston, 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.