Walnut · first 14 days — live forecast · rest of month — climate corridor
🗺️ 14-day forecast map
Walnut & 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
67°
Mon, Aug 17
Coldest night
51°
Mon, Aug 17
Days with precip
3 / 14
of 14 forecast days
Nicest day
Sun, Aug 30
mild, dry, light wind
The next 4 weekends
plan ahead
Sat 22 – Sun 23 Aug
56° 52°
36% precip chance
Sat 29 – Sun 30 Aug
57° 54°
36% precip chance
Sat 5 – Sun 6 Sep
48° 46°
typical range
Sat 12 – Sun 13 Sep
48° 46°
typical range
30 days — Walnut
14 forecast + 16 climatology
Mon · Today Showers
67°51°1.6 mm⌄
Wind22 mph SW
Gusts29 mph
UV index11 – Very high
Precip chance57%
Sunrise06:14
Sunset19:36
Tue · Tomorrow Showers
54°52°4.0 mm⌄
Wind15 mph SW
Gusts21 mph
UV index11 – Very high
Precip chance60%
Sunrise06:15
Sunset19:35
Wednesday 19/8 Sunny
53°52°0.2 mm⌄
Wind12 mph S
Gusts23 mph
UV index10 – Very high
Precip chance17%
Sunrise06:16
Sunset19:34
Thursday 20/8 Mostly cloudy
57°52°0.2 mm⌄
Wind28 mph N
Gusts32 mph
UV index10 – Very high
Precip chance22%
Sunrise06:16
Sunset19:32
Friday 21/8 Showers
60°56°14.9 mm⌄
Wind44 mph N
Gusts61 mph
UV index4 – Moderate
Precip chance90%
Sunrise06:17
Sunset19:31
Saturday 22/8 Partly cloudy
56°54°0.2 mm⌄
Wind25 mph SW
Gusts29 mph
UV index4 – Moderate
Precip chance22%
Sunrise06:18
Sunset19:30
Sunday 23/8 Showers
54°52°0.4 mm⌄
Wind21 mph S
Gusts32 mph
UV index4 – Moderate
Precip chance36%
Sunrise06:18
Sunset19:29
Monday 24/8 Showers
54°53°0.9 mm⌄
Wind11 mph S
Gusts20 mph
UV index4 – Moderate
Precip chance38%
Sunrise06:19
Sunset19:28
Tuesday 25/8 Sunny
55°54°0.9 mm⌄
Wind15 mph SW
Gusts16 mph
UV index4 – Moderate
Precip chance39%
Sunrise06:20
Sunset19:26
Wednesday 26/8 Sunny
56°53°0.4 mm⌄
Wind22 mph W
Gusts25 mph
UV index4 – Moderate
Precip chance36%
Sunrise06:20
Sunset19:25
Thursday 27/8 Sunny
56°53°0.9 mm⌄
Wind31 mph SW
Gusts36 mph
UV index4 – Moderate
Precip chance42%
Sunrise06:21
Sunset19:24
Friday 28/8 Sunny
54°53°17%⌄
Wind26 mph S
Gusts29 mph
UV index4 – Moderate
Precip chance17%
Sunrise06:22
Sunset19:23
Saturday 29/8 Showers
55°54°0.3 mm⌄
Wind13 mph SE
Gusts18 mph
UV index4 – Moderate
Precip chance36%
Sunrise06:23
Sunset19:21
Sunday 30/8 Mostly cloudy
57°55°21%⌄
Wind12 mph N
Gusts13 mph
UV index3 – Moderate
Precip chance21%
Sunrise06:23
Sunset19:20
Monday 31/8 Rain (climatological)
57°54°4.1 mm⌄
Day≈52–63°
Night≈49–59°
Precip≈2.1 in / August
(climatological)Typical range for these dates · 1991–2020
Tuesday 1/9 Partly cloudy (climatological)
53°50°20%⌄
Day≈48–58°
Night≈45–56°
Precip≈2.1 in / September
(climatological)Typical range for these dates · 1991–2020
Wednesday 2/9 Partly cloudy (climatological)
54°51°20%⌄
Day≈49–60°
Night≈46–56°
Precip≈2.1 in / September
(climatological)Typical range for these dates · 1991–2020
Thursday 3/9 Rain (climatological)
53°50°3.8 mm⌄
Day≈48–59°
Night≈45–56°
Precip≈2.1 in / September
(climatological)Typical range for these dates · 1991–2020
Friday 4/9 Partly cloudy (climatological)
52°49°20%⌄
Day≈47–57°
Night≈44–55°
Precip≈2.1 in / September
(climatological)Typical range for these dates · 1991–2020
Saturday 5/9 Partly cloudy (climatological)
48°47°20%⌄
Day≈43–53°
Night≈42–53°
Precip≈2.1 in / September
(climatological)Typical range for these dates · 1991–2020
Sunday 6/9 Rain (climatological)
46°46°6.1 mm⌄
Day≈40–51°
Night≈40–51°
Precip≈2.1 in / September
(climatological)Typical range for these dates · 1991–2020
Monday 7/9 Partly cloudy (climatological)
50°48°20%⌄
Day≈45–55°
Night≈43–54°
Precip≈2.1 in / September
(climatological)Typical range for these dates · 1991–2020
Tuesday 8/9 Partly cloudy (climatological)
57°52°20%⌄
Day≈51–62°
Night≈47–58°
Precip≈2.1 in / September
(climatological)Typical range for these dates · 1991–2020
Wednesday 9/9 Rain (climatological)
55°51°6.7 mm⌄
Day≈50–61°
Night≈46–57°
Precip≈2.1 in / September
(climatological)Typical range for these dates · 1991–2020
Thursday 10/9 Partly cloudy (climatological)
53°50°20%⌄
Day≈47–58°
Night≈45–55°
Precip≈2.1 in / September
(climatological)Typical range for these dates · 1991–2020
Friday 11/9 Partly cloudy (climatological)
49°47°20%⌄
Day≈43–54°
Night≈42–53°
Precip≈2.1 in / September
(climatological)Typical range for these dates · 1991–2020
Saturday 12/9 Rain (climatological)
48°47°4.1 mm⌄
Day≈43–54°
Night≈42–53°
Precip≈2.1 in / September
(climatological)Typical range for these dates · 1991–2020
Sunday 13/9 Partly cloudy (climatological)
46°46°20%⌄
Day≈41–51°
Night≈41–51°
Precip≈2.1 in / September
(climatological)Typical range for these dates · 1991–2020
Monday 14/9 Partly cloudy (climatological)
49°48°20%⌄
Day≈43–54°
Night≈42–53°
Precip≈2.1 in / September
(climatological)Typical range for these dates · 1991–2020
Tuesday 15/9 Rain (climatological)
55°51°3.1 mm⌄
Day≈49–60°
Night≈46–56°
Precip≈2.1 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 Walnut, 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.