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
100°
Sat, Aug 22
Coldest night
55°
Wed, Aug 19
Days with precip
1 / 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
100° 64°
1% precip chance
Sat 29 – Sun 30 Aug
93° 60°
typical range
Sat 5 – Sun 6 Sep
82° 51°
typical range
Sat 12 – Sun 13 Sep
85° 50°
typical range
30 days — Logan
14 forecast + 16 climatology
Sun · Today Sunny
90°57°17%⌄
Wind15 mph W
Gusts17 mph
UV index9 – Very high
Precip chance17%
Sunrise06:36
Sunset20:26
Mon · Tomorrow Sunny
91°60°1%⌄
Wind17 mph SW
Gusts20 mph
UV index9 – Very high
Precip chance1%
Sunrise06:37
Sunset20:24
Tuesday 18/8 Sunny
87°61°17%⌄
Wind17 mph SW
Gusts19 mph
UV index8 – Very high
Precip chance17%
Sunrise06:38
Sunset20:23
Wednesday 19/8 Sunny
87°55°1%⌄
Wind15 mph NW
Gusts17 mph
UV index8 – Very high
Precip chance1%
Sunrise06:40
Sunset20:21
Thursday 20/8 Sunny
92°57°1%⌄
Wind12 mph W
Gusts14 mph
UV index8 – Very high
Precip chance1%
Sunrise06:41
Sunset20:20
Friday 21/8 Sunny
97°60°0%⌄
Wind11 mph W
Gusts13 mph
UV index9 – Very high
Precip chance0%
Sunrise06:42
Sunset20:18
Saturday 22/8 Sunny
100°65°1%⌄
Wind14 mph SW
Gusts16 mph
UV index9 – Very high
Precip chance1%
Sunrise06:43
Sunset20:17
Sunday 23/8 Sunny
97°64°1%⌄
Wind8 mph W
Gusts15 mph
UV index9 – Very high
Precip chance1%
Sunrise06:44
Sunset20:15
Monday 24/8 Sunny
86°66°2%⌄
Wind8 mph SW
Gusts9 mph
UV index8 – Very high
Precip chance2%
Sunrise06:45
Sunset20:14
Tuesday 25/8 Sunny
93°61°1%⌄
Wind11 mph W
Gusts13 mph
UV index8 – Very high
Precip chance1%
Sunrise06:46
Sunset20:12
Wednesday 26/8 Sunny
94°62°3%⌄
Wind13 mph W
Gusts15 mph
UV index8 – Very high
Precip chance3%
Sunrise06:47
Sunset20:11
Thursday 27/8 Sunny
94°63°0.4 mm⌄
Wind13 mph W
Gusts15 mph
UV index8 – Very high
Precip chance36%
Sunrise06:48
Sunset20:09
Friday 28/8 Sunny
89°58°1.5 mm⌄
Wind9 mph W
Gusts11 mph
UV index8 – Very high
Precip chance57%
Sunrise06:49
Sunset20:07
Saturday 29/8 Sunny
89°60°0.6 mm⌄
Wind13 mph W
Gusts15 mph
UV index8 – Very high
Precip chance36%
Sunrise06:50
Sunset20:06
Sunday 30/8 Light rain (climatological)
93°61°1.2 mm⌄
Day≈88–98°
Night≈56–67°
Precip≈0.6 in / August
(climatological)Typical range for these dates · 1991–2020
Monday 31/8 Partly cloudy (climatological)
95°62°20%⌄
Day≈89–100°
Night≈57–67°
Precip≈0.6 in / August
(climatological)Typical range for these dates · 1991–2020
Tuesday 1/9 Partly cloudy (climatological)
87°56°20%⌄
Day≈82–93°
Night≈50–61°
Precip≈0.6 in / September
(climatological)Typical range for these dates · 1991–2020
Wednesday 2/9 Light rain (climatological)
84°53°1.1 mm⌄
Day≈78–89°
Night≈48–59°
Precip≈0.6 in / September
(climatological)Typical range for these dates · 1991–2020
Thursday 3/9 Partly cloudy (climatological)
83°53°20%⌄
Day≈78–89°
Night≈48–59°
Precip≈0.6 in / September
(climatological)Typical range for these dates · 1991–2020
Friday 4/9 Partly cloudy (climatological)
81°52°20%⌄
Day≈76–87°
Night≈46–57°
Precip≈0.6 in / September
(climatological)Typical range for these dates · 1991–2020
Saturday 5/9 Light rain (climatological)
80°51°1.0 mm⌄
Day≈74–85°
Night≈46–56°
Precip≈0.6 in / September
(climatological)Typical range for these dates · 1991–2020
Sunday 6/9 Partly cloudy (climatological)
82°52°20%⌄
Day≈76–87°
Night≈47–58°
Precip≈0.6 in / September
(climatological)Typical range for these dates · 1991–2020
Monday 7/9 Partly cloudy (climatological)
90°57°20%⌄
Day≈85–96°
Night≈52–63°
Precip≈0.6 in / September
(climatological)Typical range for these dates · 1991–2020
Tuesday 8/9 Light rain (climatological)
90°57°1.7 mm⌄
Day≈85–95°
Night≈52–63°
Precip≈0.6 in / September
(climatological)Typical range for these dates · 1991–2020
Wednesday 9/9 Partly cloudy (climatological)
84°54°20%⌄
Day≈79–89°
Night≈48–59°
Precip≈0.6 in / September
(climatological)Typical range for these dates · 1991–2020
Thursday 10/9 Partly cloudy (climatological)
82°52°20%⌄
Day≈76–87°
Night≈47–58°
Precip≈0.6 in / September
(climatological)Typical range for these dates · 1991–2020
Friday 11/9 Light rain (climatological)
79°51°1.7 mm⌄
Day≈74–85°
Night≈45–56°
Precip≈0.6 in / September
(climatological)Typical range for these dates · 1991–2020
Saturday 12/9 Partly cloudy (climatological)
78°50°20%⌄
Day≈73–83°
Night≈45–55°
Precip≈0.6 in / September
(climatological)Typical range for these dates · 1991–2020
Sunday 13/9 Partly cloudy (climatological)
85°54°20%⌄
Day≈79–90°
Night≈49–59°
Precip≈0.6 in / September
(climatological)Typical range for these dates · 1991–2020
Monday 14/9 Light rain (climatological)
85°54°1.3 mm⌄
Day≈80–91°
Night≈49–60°
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 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.