Greenbelt · first 14 days — live forecast · rest of month — climate corridor
🗺️ 14-day forecast map
Greenbelt & 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
93°
Thu, Sep 3
Coldest night
64°
Mon, Aug 24
Days with precip
2 / 14
of 14 forecast days
Nicest day
Mon, Aug 24
mild, dry, light wind
The next 4 weekends
plan ahead
Sat 22 – Sun 23 Aug
85° 67°
90% precip chance
Sat 29 – Sun 30 Aug
92° 71°
39% precip chance
Sat 5 – Sun 6 Sep
84° 65°
typical range
Sat 12 – Sun 13 Sep
86° 64°
typical range
30 days — Greenbelt
14 forecast + 16 climatology
Sat · Today Light rain
75°68°19.9 mm⌄
Wind7 mph SE
Gusts13 mph
UV index3 – Low
Precip chance90%
Sunrise06:27
Sunset19:53
Sun · Tomorrow Sunny
85°67°0.9 mm⌄
Wind13 mph W
Gusts24 mph
UV index8 – High
Precip chance36%
Sunrise06:28
Sunset19:51
Monday 24/8 Sunny
83°64°2%⌄
Wind10 mph W
Gusts17 mph
UV index7 – High
Precip chance2%
Sunrise06:29
Sunset19:50
Tuesday 25/8 Sunny
86°65°3%⌄
Wind5 mph SE
Gusts16 mph
UV index7 – High
Precip chance3%
Sunrise06:30
Sunset19:49
Wednesday 26/8 Mostly cloudy
89°66°17%⌄
Wind7 mph SE
Gusts21 mph
UV index8 – Very high
Precip chance17%
Sunrise06:31
Sunset19:47
Thursday 27/8 Mostly cloudy
76°69°4.1 mm⌄
Wind7 mph SE
Gusts21 mph
UV index6 – High
Precip chance78%
Sunrise06:31
Sunset19:46
Friday 28/8 Mostly cloudy
90°68°18%⌄
Wind6 mph NW
Gusts11 mph
UV index7 – High
Precip chance18%
Sunrise06:32
Sunset19:44
Saturday 29/8 Showers
92°73°0.7 mm⌄
Wind8 mph SE
Gusts18 mph
UV index8 – Very high
Precip chance39%
Sunrise06:33
Sunset19:43
Sunday 30/8 Partly cloudy
92°71°0.7 mm⌄
Wind9 mph W
Gusts20 mph
UV index8 – Very high
Precip chance38%
Sunrise06:34
Sunset19:41
Monday 31/8 Showers
87°72°0.6 mm⌄
Wind8 mph W
Gusts15 mph
UV index7 – High
Precip chance40%
Sunrise06:35
Sunset19:40
Tuesday 1/9 Sunny
92°71°0.3 mm⌄
Wind8 mph E
Gusts15 mph
UV index8 – Very high
Precip chance36%
Sunrise06:36
Sunset19:38
Wednesday 2/9 Mostly cloudy
92°72°8%⌄
Wind5 mph W
Gusts10 mph
UV index8 – Very high
Precip chance8%
Sunrise06:37
Sunset19:37
Thursday 3/9 Mostly cloudy
93°76°17%⌄
Wind5 mph SE
Gusts15 mph
UV index8 – Very high
Precip chance17%
Sunrise06:38
Sunset19:35
Friday 4/9 Partly cloudy
92°75°0.2 mm⌄
Wind7 mph SE
Gusts22 mph
UV index8 – Very high
Precip chance27%
Sunrise06:39
Sunset19:33
Saturday 5/9 Rain (climatological)
83°65°4.6 mm⌄
Day≈78–88°
Night≈60–71°
Precip≈2.4 in / September
(climatological)Typical range for these dates · 1991–2020
Sunday 6/9 Partly cloudy (climatological)
84°66°20%⌄
Day≈78–89°
Night≈60–71°
Precip≈2.4 in / September
(climatological)Typical range for these dates · 1991–2020
Monday 7/9 Partly cloudy (climatological)
82°65°20%⌄
Day≈77–88°
Night≈60–70°
Precip≈2.4 in / September
(climatological)Typical range for these dates · 1991–2020
Tuesday 8/9 Rain (climatological)
83°65°7.2 mm⌄
Day≈78–89°
Night≈60–71°
Precip≈2.4 in / September
(climatological)Typical range for these dates · 1991–2020
Wednesday 9/9 Partly cloudy (climatological)
81°64°20%⌄
Day≈76–86°
Night≈59–69°
Precip≈2.4 in / September
(climatological)Typical range for these dates · 1991–2020
Thursday 10/9 Partly cloudy (climatological)
74°60°20%⌄
Day≈69–80°
Night≈55–65°
Precip≈2.4 in / September
(climatological)Typical range for these dates · 1991–2020
Friday 11/9 Rain (climatological)
78°63°6.0 mm⌄
Day≈73–84°
Night≈57–68°
Precip≈2.4 in / September
(climatological)Typical range for these dates · 1991–2020
Saturday 12/9 Partly cloudy (climatological)
81°64°20%⌄
Day≈76–86°
Night≈59–69°
Precip≈2.4 in / September
(climatological)Typical range for these dates · 1991–2020
Sunday 13/9 Partly cloudy (climatological)
86°67°20%⌄
Day≈81–92°
Night≈62–73°
Precip≈2.4 in / September
(climatological)Typical range for these dates · 1991–2020
Monday 14/9 Rain (climatological)
86°67°4.0 mm⌄
Day≈80–91°
Night≈62–72°
Precip≈2.4 in / September
(climatological)Typical range for these dates · 1991–2020
Tuesday 15/9 Partly cloudy (climatological)
83°66°20%⌄
Day≈78–89°
Night≈60–71°
Precip≈2.4 in / September
(climatological)Typical range for these dates · 1991–2020
Wednesday 16/9 Partly cloudy (climatological)
80°63°20%⌄
Day≈74–85°
Night≈58–69°
Precip≈2.4 in / September
(climatological)Typical range for these dates · 1991–2020
Thursday 17/9 Rain (climatological)
78°62°5.2 mm⌄
Day≈73–84°
Night≈57–68°
Precip≈2.4 in / September
(climatological)Typical range for these dates · 1991–2020
Friday 18/9 Partly cloudy (climatological)
76°61°20%⌄
Day≈71–82°
Night≈56–67°
Precip≈2.4 in / September
(climatological)Typical range for these dates · 1991–2020
Saturday 19/9 Partly cloudy (climatological)
82°64°20%⌄
Day≈76–87°
Night≈59–70°
Precip≈2.4 in / September
(climatological)Typical range for these dates · 1991–2020
Sunday 20/9 Rain (climatological)
85°67°6.0 mm⌄
Day≈80–91°
Night≈61–72°
Precip≈2.4 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 Greenbelt, 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.