Monon · first 14 days — live forecast · rest of month — climate corridor
🗺️ 14-day forecast map
Monon & 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
82°
Sun, Aug 30
Coldest night
53°
Thu, Sep 3
Days with precip
7 / 14
of 14 forecast days
Nicest day
Sun, Sep 6
mild, dry, light wind
The next 4 weekends
plan ahead
Sat 29 – Sun 30 Aug
82° 64°
18% precip chance
Sat 5 – Sun 6 Sep
70° 55°
14% precip chance
Sat 12 – Sun 13 Sep
65° 52°
typical range
Sat 19 – Sun 20 Sep
66° 51°
typical range
30 days — Monon
14 forecast + 16 climatology
Tue · Today Sunny
76°53°10%⌄
Wind5 mph SE
Gusts15 mph
UV index8 – Very high
Precip chance10%
Sunrise07:07
Sunset20:31
Wed · Tomorrow Mostly cloudy
77°62°4.0 mm⌄
Wind11 mph SW
Gusts15 mph
UV index8 – High
Precip chance77%
Sunrise07:08
Sunset20:30
Thursday 27/8 Sunny
79°65°3.1 mm⌄
Wind9 mph N
Gusts16 mph
UV index7 – High
Precip chance67%
Sunrise07:09
Sunset20:28
Friday 28/8 Sunny
80°64°9%⌄
Wind5 mph W
Gusts16 mph
UV index7 – High
Precip chance9%
Sunrise07:10
Sunset20:26
Saturday 29/8 Mostly cloudy
77°64°18%⌄
Wind9 mph SE
Gusts16 mph
UV index6 – High
Precip chance18%
Sunrise07:11
Sunset20:25
Sunday 30/8 Mostly cloudy
82°66°17%⌄
Wind17 mph SW
Gusts30 mph
UV index6 – High
Precip chance17%
Sunrise07:12
Sunset20:23
Monday 31/8 Showers
81°71°6.9 mm⌄
Wind16 mph SW
Gusts35 mph
UV index6 – High
Precip chance87%
Sunrise07:13
Sunset20:22
Tuesday 1/9 Mostly cloudy
80°65°2.7 mm⌄
Wind16 mph SW
Gusts37 mph
UV index6 – High
Precip chance70%
Sunrise07:14
Sunset20:20
Wednesday 2/9 Partly cloudy
67°58°25%⌄
Wind11 mph N
Gusts18 mph
UV index4 – Moderate
Precip chance25%
Sunrise07:15
Sunset20:18
Thursday 3/9 Mostly cloudy
61°53°3.8 mm⌄
Wind7 mph N
Gusts18 mph
UV index5 – Moderate
Precip chance77%
Sunrise07:16
Sunset20:17
Friday 4/9 Mostly cloudy
66°53°1.4 mm⌄
Wind8 mph NE
Gusts18 mph
UV index5 – Moderate
Precip chance68%
Sunrise07:17
Sunset20:15
Saturday 5/9 Sunny
68°55°14%⌄
Wind12 mph N
Gusts17 mph
UV index5 – Moderate
Precip chance14%
Sunrise07:18
Sunset20:14
Sunday 6/9 Sunny
70°55°10%⌄
Wind6 mph N
Gusts12 mph
UV index6 – High
Precip chance10%
Sunrise07:19
Sunset20:12
Monday 7/9 Showers
63°57°5.3 mm⌄
Wind6 mph E
Gusts13 mph
UV index4 – Moderate
Precip chance87%
Sunrise07:20
Sunset20:10
Tuesday 8/9 Rain (climatological)
66°53°5.3 mm⌄
Day≈61–71°
Night≈48–59°
Precip≈2.3 in / September
(climatological)Typical range for these dates · 1991–2020
Wednesday 9/9 Partly cloudy (climatological)
68°54°20%⌄
Day≈62–73°
Night≈49–60°
Precip≈2.3 in / September
(climatological)Typical range for these dates · 1991–2020
Thursday 10/9 Partly cloudy (climatological)
69°55°20%⌄
Day≈64–74°
Night≈50–61°
Precip≈2.3 in / September
(climatological)Typical range for these dates · 1991–2020
Friday 11/9 Rain (climatological)
69°55°7.1 mm⌄
Day≈63–74°
Night≈50–60°
Precip≈2.3 in / September
(climatological)Typical range for these dates · 1991–2020
Saturday 12/9 Partly cloudy (climatological)
65°53°20%⌄
Day≈60–71°
Night≈47–58°
Precip≈2.3 in / September
(climatological)Typical range for these dates · 1991–2020
Sunday 13/9 Partly cloudy (climatological)
64°52°20%⌄
Day≈59–70°
Night≈47–58°
Precip≈2.3 in / September
(climatological)Typical range for these dates · 1991–2020
Monday 14/9 Rain (climatological)
61°50°4.7 mm⌄
Day≈56–66°
Night≈45–56°
Precip≈2.3 in / September
(climatological)Typical range for these dates · 1991–2020
Tuesday 15/9 Partly cloudy (climatological)
67°54°20%⌄
Day≈62–73°
Night≈49–60°
Precip≈2.3 in / September
(climatological)Typical range for these dates · 1991–2020
Wednesday 16/9 Partly cloudy (climatological)
71°56°20%⌄
Day≈65–76°
Night≈51–61°
Precip≈2.3 in / September
(climatological)Typical range for these dates · 1991–2020
Thursday 17/9 Rain (climatological)
70°56°3.3 mm⌄
Day≈65–76°
Night≈51–61°
Precip≈2.3 in / September
(climatological)Typical range for these dates · 1991–2020
Friday 18/9 Partly cloudy (climatological)
68°54°20%⌄
Day≈62–73°
Night≈49–60°
Precip≈2.3 in / September
(climatological)Typical range for these dates · 1991–2020
Saturday 19/9 Partly cloudy (climatological)
66°53°20%⌄
Day≈60–71°
Night≈48–59°
Precip≈2.3 in / September
(climatological)Typical range for these dates · 1991–2020
Sunday 20/9 Rain (climatological)
62°51°5.9 mm⌄
Day≈57–68°
Night≈46–56°
Precip≈2.3 in / September
(climatological)Typical range for these dates · 1991–2020
Monday 21/9 Partly cloudy (climatological)
64°52°20%⌄
Day≈59–69°
Night≈47–58°
Precip≈2.3 in / September
(climatological)Typical range for these dates · 1991–2020
Tuesday 22/9 Partly cloudy (climatological)
67°54°20%⌄
Day≈62–73°
Night≈49–59°
Precip≈2.3 in / September
(climatological)Typical range for these dates · 1991–2020
Wednesday 23/9 Rain (climatological)
70°56°4.7 mm⌄
Day≈65–75°
Night≈50–61°
Precip≈2.3 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 Monon, 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.