Harrisburg · first 14 days — live forecast · rest of month — climate corridor
🗺️ 14-day forecast map
Harrisburg & 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
44°
Wed, Sep 9
Coldest night
20°
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 5 – Sun 6 Sep
39° 22°
73% precip chance
Sat 12 – Sun 13 Sep
42° 23°
36% precip chance
Sat 19 – Sun 20 Sep
32° 19°
typical range
Sat 26 – Sun 27 Sep
34° 19°
typical range
30 days — Harrisburg
14 forecast + 16 climatology
Mon · Today Sunny
34°21°5%⌄
Wind12 mph S
Gusts30 mph
UV index9 – Very high
Precip chance5%
Sunrise06:23
Sunset19:25
Tue · Tomorrow Sunny
39°25°1%⌄
Wind12 mph S
Gusts28 mph
UV index9 – Very high
Precip chance1%
Sunrise06:24
Sunset19:23
Wednesday 2/9 Sunny
40°26°1%⌄
Wind12 mph S
Gusts27 mph
UV index9 – Very high
Precip chance1%
Sunrise06:25
Sunset19:22
Thursday 3/9 Sunny
40°27°2%⌄
Wind11 mph S
Gusts21 mph
UV index9 – Very high
Precip chance2%
Sunrise06:26
Sunset19:21
Friday 4/9 Sunny
38°26°3%⌄
Wind12 mph SE
Gusts20 mph
UV index9 – Very high
Precip chance3%
Sunrise06:26
Sunset19:19
Saturday 5/9 Sunny
39°25°7.7 mm⌄
Wind9 mph NE
Gusts23 mph
UV index9 – Very high
Precip chance59%
Sunrise06:27
Sunset19:17
Sunday 6/9 Showers
37°22°6.5 mm⌄
Wind12 mph E
Gusts28 mph
UV index8 – Very high
Precip chance73%
Sunrise06:28
Sunset19:16
Monday 7/9 Mostly cloudy
33°20°14%⌄
Wind9 mph E
Gusts25 mph
UV index7 – High
Precip chance14%
Sunrise06:29
Sunset19:14
Tuesday 8/9 Sunny
42°24°3%⌄
Wind16 mph SW
Gusts31 mph
UV index10 – Very high
Precip chance3%
Sunrise06:30
Sunset19:13
Wednesday 9/9 Sunny
44°25°2%⌄
Wind10 mph E
Gusts24 mph
UV index10 – Very high
Precip chance2%
Sunrise06:31
Sunset19:11
Thursday 10/9 Sunny
37°22°3%⌄
Wind10 mph E
Gusts24 mph
UV index9 – Very high
Precip chance3%
Sunrise06:31
Sunset19:10
Friday 11/9 Mostly cloudy
37°22°6%⌄
Wind9 mph E
Gusts19 mph
UV index8 – Very high
Precip chance6%
Sunrise06:32
Sunset19:08
Saturday 12/9 Sunny
38°23°1%⌄
Wind8 mph SE
Gusts18 mph
UV index9 – Very high
Precip chance1%
Sunrise06:33
Sunset19:07
Sunday 13/9 Sunny
42°25°0.5 mm⌄
Wind8 mph SW
Gusts19 mph
UV index10 – Very high
Precip chance36%
Sunrise06:34
Sunset19:05
Monday 14/9 Rain (climatological)
35°21°3.2 mm⌄
Day≈32–38°
Night≈18–24°
Precip≈1.3 in / September
(climatological)Typical range for these dates · 1991–2020
Tuesday 15/9 Partly cloudy (climatological)
38°23°20%⌄
Day≈35–41°
Night≈20–26°
Precip≈1.3 in / September
(climatological)Typical range for these dates · 1991–2020
Wednesday 16/9 Partly cloudy (climatological)
37°22°20%⌄
Day≈34–40°
Night≈19–25°
Precip≈1.3 in / September
(climatological)Typical range for these dates · 1991–2020
Thursday 17/9 Light rain (climatological)
35°21°1.9 mm⌄
Day≈32–38°
Night≈18–24°
Precip≈1.3 in / September
(climatological)Typical range for these dates · 1991–2020
Friday 18/9 Partly cloudy (climatological)
33°20°20%⌄
Day≈30–36°
Night≈17–23°
Precip≈1.3 in / September
(climatological)Typical range for these dates · 1991–2020
Saturday 19/9 Partly cloudy (climatological)
31°19°20%⌄
Day≈28–34°
Night≈16–22°
Precip≈1.3 in / September
(climatological)Typical range for these dates · 1991–2020
Sunday 20/9 Light rain (climatological)
32°19°2.0 mm⌄
Day≈29–35°
Night≈16–22°
Precip≈1.3 in / September
(climatological)Typical range for these dates · 1991–2020
Monday 21/9 Partly cloudy (climatological)
35°21°20%⌄
Day≈32–38°
Night≈18–24°
Precip≈1.3 in / September
(climatological)Typical range for these dates · 1991–2020
Tuesday 22/9 Partly cloudy (climatological)
36°21°20%⌄
Day≈33–39°
Night≈18–24°
Precip≈1.3 in / September
(climatological)Typical range for these dates · 1991–2020
Wednesday 23/9 Rain (climatological)
38°23°2.7 mm⌄
Day≈35–41°
Night≈20–26°
Precip≈1.3 in / September
(climatological)Typical range for these dates · 1991–2020
Thursday 24/9 Partly cloudy (climatological)
37°22°20%⌄
Day≈34–40°
Night≈19–25°
Precip≈1.3 in / September
(climatological)Typical range for these dates · 1991–2020
Friday 25/9 Partly cloudy (climatological)
35°21°20%⌄
Day≈32–38°
Night≈18–24°
Precip≈1.3 in / September
(climatological)Typical range for these dates · 1991–2020
Saturday 26/9 Rain (climatological)
34°20°2.2 mm⌄
Day≈31–37°
Night≈17–23°
Precip≈1.3 in / September
(climatological)Typical range for these dates · 1991–2020
Sunday 27/9 Partly cloudy (climatological)
32°19°20%⌄
Day≈29–35°
Night≈16–22°
Precip≈1.3 in / September
(climatological)Typical range for these dates · 1991–2020
Monday 28/9 Partly cloudy (climatological)
35°21°20%⌄
Day≈32–38°
Night≈18–24°
Precip≈1.3 in / September
(climatological)Typical range for these dates · 1991–2020
Tuesday 29/9 Rain (climatological)
36°21°3.6 mm⌄
Day≈33–39°
Night≈18–24°
Precip≈1.3 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 Harrisburg, 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.