Harveys Lake · first 14 days — live forecast · rest of month — climate corridor
🗺️ 14-day forecast map
Harveys Lake & 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
83°
Thu, Sep 3
Coldest night
53°
Thu, Sep 10
Days with precip
6 / 14
of 14 forecast days
Nicest day
Mon, Sep 7
mild, dry, light wind
The next 4 weekends
plan ahead
Sat 5 – Sun 6 Sep
72° 56°
14% precip chance
Sat 12 – Sun 13 Sep
79° 60°
12% precip chance
Sat 19 – Sun 20 Sep
70° 56°
typical range
Sat 26 – Sun 27 Sep
72° 56°
typical range
30 days — Harveys Lake
14 forecast + 16 climatology
Tue · Today Showers
80°65°25.5 mm⌄
Wind9 mph W
Gusts16 mph
UV index6 – Moderate
Precip chance90%
Sunrise06:30
Sunset19:37
Wed · Tomorrow Fog
71°62°13.9 mm⌄
Wind6 mph SE
Gusts18 mph
UV index2 – Low
Precip chance95%
Sunrise06:31
Sunset19:36
Thursday 3/9 Showers
83°63°29.3 mm⌄
Wind10 mph W
Gusts24 mph
UV index8 – High
Precip chance90%
Sunrise06:32
Sunset19:34
Friday 4/9 Mostly cloudy
78°66°1.8 mm⌄
Wind9 mph N
Gusts16 mph
UV index5 – Moderate
Precip chance72%
Sunrise06:33
Sunset19:32
Saturday 5/9 Sunny
72°56°9%⌄
Wind8 mph N
Gusts14 mph
UV index6 – High
Precip chance9%
Sunrise06:34
Sunset19:31
Sunday 6/9 Fog
71°56°14%⌄
Wind6 mph N
Gusts9 mph
UV index6 – High
Precip chance14%
Sunrise06:35
Sunset19:29
Monday 7/9 Mostly cloudy
72°54°11%⌄
Wind3 mph E
Gusts9 mph
UV index6 – High
Precip chance11%
Sunrise06:36
Sunset19:27
Tuesday 8/9 Mostly cloudy
69°58°1.1 mm⌄
Wind8 mph S
Gusts25 mph
UV index5 – Moderate
Precip chance66%
Sunrise06:37
Sunset19:26
Wednesday 9/9 Showers
60°55°66.1 mm⌄
Wind10 mph SE
Gusts26 mph
UV index4 – Moderate
Precip chance94%
Sunrise06:38
Sunset19:24
Thursday 10/9 Mostly cloudy
66°53°16%⌄
Wind11 mph NE
Gusts25 mph
UV index5 – Moderate
Precip chance16%
Sunrise06:39
Sunset19:22
Friday 11/9 Sunny
74°56°11%⌄
Wind9 mph NE
Gusts23 mph
UV index6 – High
Precip chance11%
Sunrise06:40
Sunset19:20
Saturday 12/9 Mostly cloudy
73°61°12%⌄
Wind7 mph NE
Gusts15 mph
UV index6 – High
Precip chance12%
Sunrise06:41
Sunset19:19
Sunday 13/9 Sunny
79°60°8%⌄
Wind4 mph N
Gusts9 mph
UV index6 – High
Precip chance8%
Sunrise06:42
Sunset19:17
Monday 14/9 Sunny
81°64°8%⌄
Wind6 mph N
Gusts11 mph
UV index7 – High
Precip chance8%
Sunrise06:43
Sunset19:15
Tuesday 15/9 Rain (climatological)
75°61°17.9 mm⌄
Day≈70–81°
Night≈55–66°
Precip≈11.8 in / September
(climatological)Typical range for these dates · 1991–2020
Wednesday 16/9 Partly cloudy (climatological)
77°62°20%⌄
Day≈72–83°
Night≈56–67°
Precip≈11.8 in / September
(climatological)Typical range for these dates · 1991–2020
Thursday 17/9 Partly cloudy (climatological)
76°61°20%⌄
Day≈70–81°
Night≈55–66°
Precip≈11.8 in / September
(climatological)Typical range for these dates · 1991–2020
Friday 18/9 Rain (climatological)
74°60°18.9 mm⌄
Day≈68–79°
Night≈54–65°
Precip≈11.8 in / September
(climatological)Typical range for these dates · 1991–2020
Saturday 19/9 Partly cloudy (climatological)
70°57°20%⌄
Day≈64–75°
Night≈52–62°
Precip≈11.8 in / September
(climatological)Typical range for these dates · 1991–2020
Sunday 20/9 Partly cloudy (climatological)
67°56°20%⌄
Day≈62–73°
Night≈50–61°
Precip≈11.8 in / September
(climatological)Typical range for these dates · 1991–2020
Monday 21/9 Rain (climatological)
69°57°20.9 mm⌄
Day≈64–74°
Night≈51–62°
Precip≈11.8 in / September
(climatological)Typical range for these dates · 1991–2020
Tuesday 22/9 Partly cloudy (climatological)
76°61°20%⌄
Day≈70–81°
Night≈55–66°
Precip≈11.8 in / September
(climatological)Typical range for these dates · 1991–2020
Wednesday 23/9 Partly cloudy (climatological)
79°63°20%⌄
Day≈74–85°
Night≈58–68°
Precip≈11.8 in / September
(climatological)Typical range for these dates · 1991–2020
Thursday 24/9 Rain (climatological)
77°62°26.9 mm⌄
Day≈71–82°
Night≈56–67°
Precip≈11.8 in / September
(climatological)Typical range for these dates · 1991–2020
Friday 25/9 Partly cloudy (climatological)
77°61°20%⌄
Day≈71–82°
Night≈56–67°
Precip≈11.8 in / September
(climatological)Typical range for these dates · 1991–2020
Saturday 26/9 Partly cloudy (climatological)
72°58°20%⌄
Day≈67–77°
Night≈53–64°
Precip≈11.8 in / September
(climatological)Typical range for these dates · 1991–2020
Sunday 27/9 Rain (climatological)
68°56°32.9 mm⌄
Day≈62–73°
Night≈51–61°
Precip≈11.8 in / September
(climatological)Typical range for these dates · 1991–2020
Monday 28/9 Partly cloudy (climatological)
67°56°20%⌄
Day≈62–73°
Night≈50–61°
Precip≈11.8 in / September
(climatological)Typical range for these dates · 1991–2020
Tuesday 29/9 Partly cloudy (climatological)
75°60°20%⌄
Day≈70–80°
Night≈55–66°
Precip≈11.8 in / September
(climatological)Typical range for these dates · 1991–2020
Wednesday 30/9 Rain (climatological)
78°62°35.9 mm⌄
Day≈73–83°
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 Harveys Lake, 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.