Castle Rock · first 14 days — live forecast · rest of month — climate corridor
🗺️ 14-day forecast map
Castle Rock & 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°
Tue, Sep 8
Coldest night
46°
Fri, Sep 4
Days with precip
4 / 14
of 14 forecast days
Nicest day
Fri, Sep 4
mild, dry, light wind
The next 4 weekends
plan ahead
Sat 29 – Sun 30 Aug
75° 46°
26% precip chance
Sat 5 – Sun 6 Sep
81° 47°
7% precip chance
Sat 12 – Sun 13 Sep
67° 42°
typical range
Sat 19 – Sun 20 Sep
66° 43°
typical range
30 days — Castle Rock
14 forecast + 16 climatology
Thu · Today Sunny
76°54°14%⌄
Wind11 mph W
Gusts19 mph
UV index6 – High
Precip chance14%
Sunrise06:25
Sunset20:00
Fri · Tomorrow Fog
68°51°20%⌄
Wind8 mph W
Gusts14 mph
UV index5 – Moderate
Precip chance20%
Sunrise06:27
Sunset19:58
Saturday 29/8 Fog
65°48°26%⌄
Wind6 mph W
Gusts14 mph
UV index5 – Moderate
Precip chance26%
Sunrise06:28
Sunset19:56
Sunday 30/8 Mostly cloudy
75°46°16%⌄
Wind5 mph NW
Gusts9 mph
UV index6 – High
Precip chance16%
Sunrise06:29
Sunset19:54
Monday 31/8 Showers
62°49°5.5 mm⌄
Wind4 mph SW
Gusts11 mph
UV index4 – Moderate
Precip chance89%
Sunrise06:30
Sunset19:52
Tuesday 1/9 Showers
67°49°2.2 mm⌄
Wind9 mph W
Gusts9 mph
UV index5 – Moderate
Precip chance66%
Sunrise06:32
Sunset19:51
Wednesday 2/9 Mostly cloudy
58°49°8.4 mm⌄
Wind8 mph S
Gusts21 mph
UV index3 – Moderate
Precip chance87%
Sunrise06:33
Sunset19:49
Thursday 3/9 Fog
61°48°4.9 mm⌄
Wind10 mph W
Gusts16 mph
UV index4 – Moderate
Precip chance84%
Sunrise06:34
Sunset19:47
Friday 4/9 Sunny
71°46°9%⌄
Wind8 mph N
Gusts18 mph
UV index6 – High
Precip chance9%
Sunrise06:35
Sunset19:45
Saturday 5/9 Sunny
78°47°5%⌄
Wind7 mph N
Gusts18 mph
UV index7 – High
Precip chance5%
Sunrise06:37
Sunset19:43
Sunday 6/9 Sunny
81°52°7%⌄
Wind5 mph N
Gusts15 mph
UV index6 – High
Precip chance7%
Sunrise06:38
Sunset19:41
Monday 7/9 Sunny
85°53°6%⌄
Wind4 mph W
Gusts13 mph
UV index7 – High
Precip chance6%
Sunrise06:39
Sunset19:39
Tuesday 8/9 Sunny
88°55°6%⌄
Wind6 mph W
Gusts13 mph
UV index8 – Very high
Precip chance6%
Sunrise06:41
Sunset19:37
Wednesday 9/9 Sunny
82°53°10%⌄
Wind5 mph W
Gusts12 mph
UV index7 – High
Precip chance10%
Sunrise06:42
Sunset19:35
Thursday 10/9 Rain (climatological)
63°41°2.5 mm⌄
Day≈58–69°
Night≈36–47°
Precip≈1.8 in / September
(climatological)Typical range for these dates · 1991–2020
Friday 11/9 Partly cloudy (climatological)
64°42°20%⌄
Day≈59–70°
Night≈37–47°
Precip≈1.8 in / September
(climatological)Typical range for these dates · 1991–2020
Saturday 12/9 Partly cloudy (climatological)
67°44°20%⌄
Day≈62–73°
Night≈38–49°
Precip≈1.8 in / September
(climatological)Typical range for these dates · 1991–2020
Sunday 13/9 Rain (climatological)
64°42°4.3 mm⌄
Day≈58–69°
Night≈36–47°
Precip≈1.8 in / September
(climatological)Typical range for these dates · 1991–2020
Monday 14/9 Partly cloudy (climatological)
61°40°20%⌄
Day≈55–66°
Night≈35–45°
Precip≈1.8 in / September
(climatological)Typical range for these dates · 1991–2020
Tuesday 15/9 Partly cloudy (climatological)
61°40°20%⌄
Day≈55–66°
Night≈35–45°
Precip≈1.8 in / September
(climatological)Typical range for these dates · 1991–2020
Wednesday 16/9 Rain (climatological)
61°40°3.5 mm⌄
Day≈55–66°
Night≈35–45°
Precip≈1.8 in / September
(climatological)Typical range for these dates · 1991–2020
Thursday 17/9 Partly cloudy (climatological)
65°43°20%⌄
Day≈60–71°
Night≈37–48°
Precip≈1.8 in / September
(climatological)Typical range for these dates · 1991–2020
Friday 18/9 Partly cloudy (climatological)
68°44°20%⌄
Day≈62–73°
Night≈39–49°
Precip≈1.8 in / September
(climatological)Typical range for these dates · 1991–2020
Saturday 19/9 Rain (climatological)
66°43°4.0 mm⌄
Day≈60–71°
Night≈38–48°
Precip≈1.8 in / September
(climatological)Typical range for these dates · 1991–2020
Sunday 20/9 Partly cloudy (climatological)
66°43°20%⌄
Day≈61–72°
Night≈38–49°
Precip≈1.8 in / September
(climatological)Typical range for these dates · 1991–2020
Monday 21/9 Partly cloudy (climatological)
61°40°20%⌄
Day≈56–67°
Night≈35–46°
Precip≈1.8 in / September
(climatological)Typical range for these dates · 1991–2020
Tuesday 22/9 Rain (climatological)
60°40°3.7 mm⌄
Day≈55–65°
Night≈34–45°
Precip≈1.8 in / September
(climatological)Typical range for these dates · 1991–2020
Wednesday 23/9 Partly cloudy (climatological)
61°40°20%⌄
Day≈56–67°
Night≈35–46°
Precip≈1.8 in / September
(climatological)Typical range for these dates · 1991–2020
Thursday 24/9 Partly cloudy (climatological)
65°42°20%⌄
Day≈59–70°
Night≈37–48°
Precip≈1.8 in / September
(climatological)Typical range for these dates · 1991–2020
Friday 25/9 Rain (climatological)
65°43°4.3 mm⌄
Day≈60–71°
Night≈37–48°
Precip≈1.8 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 Castle Rock, 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.