Littleton · first 14 days — live forecast · rest of month — climate corridor
🗺️ 14-day forecast map
Littleton & 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
34°
Wed, Sep 2
Coldest night
7°
Mon, Sep 7
Days with precip
2 / 14
of 14 forecast days
Nicest day
Mon, Sep 7
mild, dry, light wind
The next 4 weekends
plan ahead
Sat 29 – Sun 30 Aug
32° 16°
36% precip chance
Sat 5 – Sun 6 Sep
31° 12°
17% precip chance
Sat 12 – Sun 13 Sep
26° 11°
typical range
Sat 19 – Sun 20 Sep
25° 10°
typical range
30 days — Littleton
14 forecast + 16 climatology
Tue · Today Sunny
29°15°0.2 mm⌄
Wind16 mph W
Gusts27 mph
UV index9 – Very high
Precip chance17%
Sunrise06:21
Sunset19:42
Wed · Tomorrow Mostly cloudy
30°16°0.6 mm⌄
Wind19 mph S
Gusts25 mph
UV index9 – Very high
Precip chance36%
Sunrise06:22
Sunset19:40
Thursday 27/8 Mostly cloudy
31°15°1.7 mm⌄
Wind15 mph SW
Gusts22 mph
UV index9 – Very high
Precip chance57%
Sunrise06:23
Sunset19:39
Friday 28/8 Sunny
32°16°0.5 mm⌄
Wind20 mph W
Gusts27 mph
UV index7 – High
Precip chance36%
Sunrise06:24
Sunset19:37
Saturday 29/8 Mostly cloudy
32°16°6%⌄
Wind10 mph SW
Gusts20 mph
UV index7 – High
Precip chance6%
Sunrise06:25
Sunset19:36
Sunday 30/8 Mostly cloudy
31°17°0.3 mm⌄
Wind17 mph N
Gusts26 mph
UV index7 – High
Precip chance36%
Sunrise06:26
Sunset19:34
Monday 31/8 Mostly cloudy
30°17°1.8 mm⌄
Wind13 mph S
Gusts23 mph
UV index6 – High
Precip chance57%
Sunrise06:27
Sunset19:33
Tuesday 1/9 Sunny
32°15°2%⌄
Wind13 mph SE
Gusts22 mph
UV index8 – Very high
Precip chance2%
Sunrise06:28
Sunset19:31
Wednesday 2/9 Sunny
34°18°17%⌄
Wind11 mph S
Gusts20 mph
UV index8 – Very high
Precip chance17%
Sunrise06:29
Sunset19:30
Thursday 3/9 Partly cloudy
30°18°17%⌄
Wind15 mph SE
Gusts19 mph
UV index7 – High
Precip chance17%
Sunrise06:30
Sunset19:28
Friday 4/9 Mostly cloudy
32°16°5%⌄
Wind10 mph S
Gusts15 mph
UV index8 – Very high
Precip chance5%
Sunrise06:31
Sunset19:27
Saturday 5/9 Mostly cloudy
31°19°17%⌄
Wind10 mph SW
Gusts17 mph
UV index7 – High
Precip chance17%
Sunrise06:32
Sunset19:25
Sunday 6/9 Mostly cloudy
29°12°6%⌄
Wind22 mph SW
Gusts31 mph
UV index6 – High
Precip chance6%
Sunrise06:33
Sunset19:23
Monday 7/9 Sunny
21°7°1%⌄
Wind16 mph SE
Gusts28 mph
UV index6 – High
Precip chance1%
Sunrise06:33
Sunset19:22
Tuesday 8/9 Light rain (climatological)
27°12°1.1 mm⌄
Day≈24–30°
Night≈9–15°
Precip≈0.6 in / September
(climatological)Typical range for these dates · 1991–2020
Wednesday 9/9 Partly cloudy (climatological)
28°13°20%⌄
Day≈25–31°
Night≈10–16°
Precip≈0.6 in / September
(climatological)Typical range for these dates · 1991–2020
Thursday 10/9 Partly cloudy (climatological)
28°13°20%⌄
Day≈25–31°
Night≈10–16°
Precip≈0.6 in / September
(climatological)Typical range for these dates · 1991–2020
Friday 11/9 Light rain (climatological)
27°13°1.3 mm⌄
Day≈24–30°
Night≈10–16°
Precip≈0.6 in / September
(climatological)Typical range for these dates · 1991–2020
Saturday 12/9 Partly cloudy (climatological)
26°12°20%⌄
Day≈23–29°
Night≈9–15°
Precip≈0.6 in / September
(climatological)Typical range for these dates · 1991–2020
Sunday 13/9 Partly cloudy (climatological)
24°11°20%⌄
Day≈21–27°
Night≈8–14°
Precip≈0.6 in / September
(climatological)Typical range for these dates · 1991–2020
Monday 14/9 Light rain (climatological)
23°10°2.0 mm⌄
Day≈20–26°
Night≈7–13°
Precip≈0.6 in / September
(climatological)Typical range for these dates · 1991–2020
Tuesday 15/9 Partly cloudy (climatological)
27°12°20%⌄
Day≈24–30°
Night≈9–15°
Precip≈0.6 in / September
(climatological)Typical range for these dates · 1991–2020
Wednesday 16/9 Partly cloudy (climatological)
27°13°20%⌄
Day≈24–30°
Night≈10–16°
Precip≈0.6 in / September
(climatological)Typical range for these dates · 1991–2020
Thursday 17/9 Light rain (climatological)
29°13°2.0 mm⌄
Day≈26–32°
Night≈10–16°
Precip≈0.6 in / September
(climatological)Typical range for these dates · 1991–2020
Friday 18/9 Partly cloudy (climatological)
28°13°20%⌄
Day≈25–31°
Night≈10–16°
Precip≈0.6 in / September
(climatological)Typical range for these dates · 1991–2020
Saturday 19/9 Partly cloudy (climatological)
25°11°20%⌄
Day≈22–28°
Night≈8–14°
Precip≈0.6 in / September
(climatological)Typical range for these dates · 1991–2020
Sunday 20/9 Light rain (climatological)
22°10°1.7 mm⌄
Day≈19–25°
Night≈7–13°
Precip≈0.6 in / September
(climatological)Typical range for these dates · 1991–2020
Monday 21/9 Partly cloudy (climatological)
23°10°20%⌄
Day≈20–26°
Night≈7–13°
Precip≈0.6 in / September
(climatological)Typical range for these dates · 1991–2020
Tuesday 22/9 Partly cloudy (climatological)
27°13°20%⌄
Day≈24–30°
Night≈10–16°
Precip≈0.6 in / September
(climatological)Typical range for these dates · 1991–2020
Wednesday 23/9 Light rain (climatological)
27°13°1.7 mm⌄
Day≈24–30°
Night≈10–16°
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 Littleton, 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.