Olney · first 14 days — live forecast · rest of month — climate corridor
🗺️ 14-day forecast map
Olney & 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
43°
Mon, Aug 24
Coldest night
23°
Thu, Aug 27
Days with precip
1 / 14
of 14 forecast days
Nicest day
Fri, Aug 28
mild, dry, light wind
The next 4 weekends
plan ahead
Sat 22 – Sun 23 Aug
43° 26°
17% precip chance
Sat 29 – Sun 30 Aug
40° 24°
9% precip chance
Sat 5 – Sun 6 Sep
39° 25°
typical range
Sat 12 – Sun 13 Sep
38° 25°
typical range
30 days — Olney
14 forecast + 16 climatology
Wed · Today Sunny
41°26°2%⌄
Wind16 mph S
Gusts36 mph
UV index10 – Very high
Precip chance2%
Sunrise07:00
Sunset20:16
Thu · Tomorrow Mostly cloudy
42°29°8%⌄
Wind15 mph S
Gusts21 mph
UV index10 – Very high
Precip chance8%
Sunrise07:01
Sunset20:15
Friday 21/8 Sunny
42°26°5%⌄
Wind25 mph S
Gusts36 mph
UV index10 – Very high
Precip chance5%
Sunrise07:01
Sunset20:14
Saturday 22/8 Sunny
42°26°3%⌄
Wind18 mph SE
Gusts28 mph
UV index10 – Very high
Precip chance3%
Sunrise07:02
Sunset20:13
Sunday 23/8 Mostly cloudy
43°30°17%⌄
Wind17 mph S
Gusts34 mph
UV index10 – Very high
Precip chance17%
Sunrise07:03
Sunset20:12
Monday 24/8 Sunny
43°32°3%⌄
Wind20 mph SW
Gusts38 mph
UV index10 – Very high
Precip chance3%
Sunrise07:03
Sunset20:10
Tuesday 25/8 Mostly cloudy
41°32°6%⌄
Wind17 mph SW
Gusts37 mph
UV index10 – Very high
Precip chance6%
Sunrise07:04
Sunset20:09
Wednesday 26/8 Mostly cloudy
43°31°7%⌄
Wind20 mph NW
Gusts37 mph
UV index10 – Very high
Precip chance7%
Sunrise07:05
Sunset20:08
Thursday 27/8 Sunny
37°23°5%⌄
Wind18 mph NE
Gusts29 mph
UV index9 – Very high
Precip chance5%
Sunrise07:05
Sunset20:07
Friday 28/8 Sunny
37°24°1%⌄
Wind10 mph E
Gusts29 mph
UV index9 – Very high
Precip chance1%
Sunrise07:06
Sunset20:05
Saturday 29/8 Sunny
40°24°1%⌄
Wind15 mph SE
Gusts32 mph
UV index9 – Very high
Precip chance1%
Sunrise07:07
Sunset20:04
Sunday 30/8 Mostly cloudy
40°28°9%⌄
Wind13 mph S
Gusts32 mph
UV index8 – Very high
Precip chance9%
Sunrise07:07
Sunset20:03
Monday 31/8 Showers
38°28°1.2 mm⌄
Wind17 mph SE
Gusts32 mph
UV index9 – Very high
Precip chance57%
Sunrise07:08
Sunset20:02
Tuesday 1/9 Mostly cloudy
36°28°8%⌄
Wind23 mph SE
Gusts33 mph
UV index9 – Very high
Precip chance8%
Sunrise07:09
Sunset20:00
Wednesday 2/9 Light rain (climatological)
37°25°1.5 mm⌄
Day≈34–40°
Night≈22–28°
Precip≈0.6 in / September
(climatological)Typical range for these dates · 1991–2020
Thursday 3/9 Partly cloudy (climatological)
40°27°20%⌄
Day≈37–43°
Night≈24–30°
Precip≈0.6 in / September
(climatological)Typical range for these dates · 1991–2020
Friday 4/9 Partly cloudy (climatological)
39°26°20%⌄
Day≈36–42°
Night≈23–29°
Precip≈0.6 in / September
(climatological)Typical range for these dates · 1991–2020
Saturday 5/9 Light rain (climatological)
39°26°1.7 mm⌄
Day≈36–42°
Night≈23–29°
Precip≈0.6 in / September
(climatological)Typical range for these dates · 1991–2020
Sunday 6/9 Partly cloudy (climatological)
38°25°20%⌄
Day≈35–41°
Night≈22–28°
Precip≈0.6 in / September
(climatological)Typical range for these dates · 1991–2020
Monday 7/9 Partly cloudy (climatological)
34°23°20%⌄
Day≈31–37°
Night≈20–26°
Precip≈0.6 in / September
(climatological)Typical range for these dates · 1991–2020
Tuesday 8/9 Light rain (climatological)
37°25°2.0 mm⌄
Day≈34–40°
Night≈22–28°
Precip≈0.6 in / September
(climatological)Typical range for these dates · 1991–2020
Wednesday 9/9 Partly cloudy (climatological)
37°25°20%⌄
Day≈34–40°
Night≈22–28°
Precip≈0.6 in / September
(climatological)Typical range for these dates · 1991–2020
Thursday 10/9 Partly cloudy (climatological)
40°27°20%⌄
Day≈37–43°
Night≈24–30°
Precip≈0.6 in / September
(climatological)Typical range for these dates · 1991–2020
Friday 11/9 Light rain (climatological)
40°27°1.2 mm⌄
Day≈37–43°
Night≈24–30°
Precip≈0.6 in / September
(climatological)Typical range for these dates · 1991–2020
Saturday 12/9 Partly cloudy (climatological)
38°25°20%⌄
Day≈35–41°
Night≈22–28°
Precip≈0.6 in / September
(climatological)Typical range for these dates · 1991–2020
Sunday 13/9 Partly cloudy (climatological)
37°25°20%⌄
Day≈34–40°
Night≈22–28°
Precip≈0.6 in / September
(climatological)Typical range for these dates · 1991–2020
Monday 14/9 Light rain (climatological)
36°24°1.9 mm⌄
Day≈33–39°
Night≈21–27°
Precip≈0.6 in / September
(climatological)Typical range for these dates · 1991–2020
Tuesday 15/9 Partly cloudy (climatological)
35°24°20%⌄
Day≈32–38°
Night≈21–27°
Precip≈0.6 in / September
(climatological)Typical range for these dates · 1991–2020
Wednesday 16/9 Partly cloudy (climatological)
38°25°20%⌄
Day≈35–41°
Night≈22–28°
Precip≈0.6 in / September
(climatological)Typical range for these dates · 1991–2020
Thursday 17/9 Light rain (climatological)
40°27°1.5 mm⌄
Day≈37–43°
Night≈24–30°
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 Olney, 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.