Logan · first 14 days — live forecast · rest of month — climate corridor
🗺️ 14-day forecast map
Logan & 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
88°
Thu, Aug 20
Coldest night
63°
Tue, Aug 25
Days with precip
6 / 14
of 14 forecast days
Nicest day
Tue, Aug 25
mild, dry, light wind
The next 4 weekends
plan ahead
Sat 22 – Sun 23 Aug
79° 66°
90% precip chance
Sat 29 – Sun 30 Aug
85° 69°
57% precip chance
Sat 5 – Sun 6 Sep
76° 60°
typical range
Sat 12 – Sun 13 Sep
78° 62°
typical range
30 days — Logan
14 forecast + 16 climatology
Thu · Today Sunny
88°70°104.5 mm⌄
Wind12 mph N
Gusts24 mph
UV index7 – High
Precip chance80%
Sunrise06:17
Sunset19:50
Fri · Tomorrow Mostly cloudy
82°65°90.9 mm⌄
Wind9 mph NE
Gusts19 mph
UV index8 – Very high
Precip chance74%
Sunrise06:18
Sunset19:49
Saturday 22/8 Showers
76°66°28.1 mm⌄
Wind9 mph E
Gusts20 mph
UV index0 – Low
Precip chance90%
Sunrise06:19
Sunset19:48
Sunday 23/8 Showers
79°66°3.0 mm⌄
Wind10 mph W
Gusts28 mph
UV index7 – High
Precip chance73%
Sunrise06:19
Sunset19:46
Monday 24/8 Sunny
78°65°3%⌄
Wind13 mph W
Gusts26 mph
UV index8 – High
Precip chance3%
Sunrise06:20
Sunset19:45
Tuesday 25/8 Mostly cloudy
79°63°10%⌄
Wind5 mph N
Gusts14 mph
UV index6 – High
Precip chance10%
Sunrise06:21
Sunset19:43
Wednesday 26/8 Sunny
82°65°6%⌄
Wind6 mph W
Gusts11 mph
UV index7 – High
Precip chance6%
Sunrise06:22
Sunset19:42
Thursday 27/8 Showers
75°66°5.9 mm⌄
Wind11 mph S
Gusts16 mph
UV index5 – Moderate
Precip chance84%
Sunrise06:23
Sunset19:40
Friday 28/8 Mostly cloudy
79°65°0.2 mm⌄
Wind7 mph NE
Gusts18 mph
UV index6 – High
Precip chance27%
Sunrise06:24
Sunset19:39
Saturday 29/8 Sunny
83°69°1.1 mm⌄
Wind8 mph S
Gusts14 mph
UV index7 – High
Precip chance57%
Sunrise06:25
Sunset19:37
Sunday 30/8 Sunny
85°69°9%⌄
Wind7 mph S
Gusts11 mph
UV index7 – High
Precip chance9%
Sunrise06:26
Sunset19:35
Monday 31/8 Mostly cloudy
85°70°0.8 mm⌄
Wind6 mph SW
Gusts15 mph
UV index7 – High
Precip chance49%
Sunrise06:27
Sunset19:34
Tuesday 1/9 Mostly cloudy
87°69°0.5 mm⌄
Wind8 mph N
Gusts21 mph
UV index8 – Very high
Precip chance36%
Sunrise06:28
Sunset19:32
Wednesday 2/9 Mostly cloudy
83°68°12%⌄
Wind9 mph N
Gusts19 mph
UV index6 – High
Precip chance12%
Sunrise06:29
Sunset19:31
Thursday 3/9 Rain (climatological)
73°60°23.0 mm⌄
Day≈68–78°
Night≈55–65°
Precip≈11.8 in / September
(climatological)Typical range for these dates · 1991–2020
Friday 4/9 Partly cloudy (climatological)
79°63°20%⌄
Day≈74–84°
Night≈58–69°
Precip≈11.8 in / September
(climatological)Typical range for these dates · 1991–2020
Saturday 5/9 Partly cloudy (climatological)
76°62°20%⌄
Day≈71–82°
Night≈56–67°
Precip≈11.8 in / September
(climatological)Typical range for these dates · 1991–2020
Sunday 6/9 Rain (climatological)
74°60°15.0 mm⌄
Day≈68–79°
Night≈55–66°
Precip≈11.8 in / September
(climatological)Typical range for these dates · 1991–2020
Monday 7/9 Partly cloudy (climatological)
70°58°20%⌄
Day≈65–76°
Night≈53–64°
Precip≈11.8 in / September
(climatological)Typical range for these dates · 1991–2020
Tuesday 8/9 Partly cloudy (climatological)
71°59°20%⌄
Day≈66–76°
Night≈53–64°
Precip≈11.8 in / September
(climatological)Typical range for these dates · 1991–2020
Wednesday 9/9 Rain (climatological)
69°57°28.0 mm⌄
Day≈63–74°
Night≈52–63°
Precip≈11.8 in / September
(climatological)Typical range for these dates · 1991–2020
Thursday 10/9 Partly cloudy (climatological)
74°60°20%⌄
Day≈68–79°
Night≈55–66°
Precip≈11.8 in / September
(climatological)Typical range for these dates · 1991–2020
Friday 11/9 Partly cloudy (climatological)
75°61°20%⌄
Day≈70–81°
Night≈56–67°
Precip≈11.8 in / September
(climatological)Typical range for these dates · 1991–2020
Saturday 12/9 Rain (climatological)
78°63°35.0 mm⌄
Day≈73–84°
Night≈58–69°
Precip≈11.8 in / September
(climatological)Typical range for these dates · 1991–2020
Sunday 13/9 Partly cloudy (climatological)
77°62°20%⌄
Day≈72–83°
Night≈57–68°
Precip≈11.8 in / September
(climatological)Typical range for these dates · 1991–2020
Monday 14/9 Partly cloudy (climatological)
73°60°20%⌄
Day≈67–78°
Night≈54–65°
Precip≈11.8 in / September
(climatological)Typical range for these dates · 1991–2020
Tuesday 15/9 Rain (climatological)
67°56°24.0 mm⌄
Day≈62–73°
Night≈51–62°
Precip≈11.8 in / September
(climatological)Typical range for these dates · 1991–2020
Wednesday 16/9 Partly cloudy (climatological)
68°57°20%⌄
Day≈63–74°
Night≈52–62°
Precip≈11.8 in / September
(climatological)Typical range for these dates · 1991–2020
Thursday 17/9 Partly cloudy (climatological)
76°62°20%⌄
Day≈71–82°
Night≈56–67°
Precip≈11.8 in / September
(climatological)Typical range for these dates · 1991–2020
Friday 18/9 Rain (climatological)
77°62°29.0 mm⌄
Day≈71–82°
Night≈57–67°
Precip≈11.8 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 Logan, 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.