Port Allegany · first 14 days — live forecast · rest of month — climate corridor
🗺️ 14-day forecast map
Port Allegany & 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
29°
Thu, Sep 3
Coldest night
6°
Fri, Sep 11
Days with precip
6 / 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
20° 11°
13% precip chance
Sat 12 – Sun 13 Sep
19° 7°
10% precip chance
Sat 19 – Sun 20 Sep
23° 12°
typical range
Sat 26 – Sun 27 Sep
23° 13°
typical range
30 days — Port Allegany
14 forecast + 16 climatology
Thu · Today Heavy rain
29°18°77.6 mm⌄
Wind13 mph W
Gusts23 mph
UV index8 – High
Precip chance84%
Sunrise06:41
Sunset19:43
Fri · Tomorrow Fog
20°16°26.3 mm⌄
Wind6 mph N
Gusts15 mph
UV index6 – Moderate
Precip chance95%
Sunrise06:42
Sunset19:42
Saturday 5/9 Sunny
20°12°13%⌄
Wind10 mph N
Gusts18 mph
UV index7 – High
Precip chance13%
Sunrise06:43
Sunset19:40
Sunday 6/9 Sunny
19°11°13%⌄
Wind9 mph NE
Gusts18 mph
UV index7 – High
Precip chance13%
Sunrise06:44
Sunset19:38
Monday 7/9 Sunny
21°11°11%⌄
Wind4 mph NE
Gusts15 mph
UV index6 – High
Precip chance11%
Sunrise06:45
Sunset19:37
Tuesday 8/9 Mostly cloudy
21°12°16%⌄
Wind4 mph N
Gusts14 mph
UV index6 – High
Precip chance16%
Sunrise06:46
Sunset19:35
Wednesday 9/9 Showers
22°15°5.1 mm⌄
Wind12 mph SW
Gusts34 mph
UV index5 – Moderate
Precip chance88%
Sunrise06:47
Sunset19:33
Thursday 10/9 Mostly cloudy
22°13°0.9 mm⌄
Wind15 mph W
Gusts36 mph
UV index6 – High
Precip chance54%
Sunrise06:48
Sunset19:31
Friday 11/9 Sunny
16°6°17%⌄
Wind10 mph N
Gusts26 mph
UV index5 – Moderate
Precip chance17%
Sunrise06:49
Sunset19:30
Saturday 12/9 Mostly cloudy
17°7°10%⌄
Wind7 mph N
Gusts14 mph
UV index5 – Moderate
Precip chance10%
Sunrise06:50
Sunset19:28
Sunday 13/9 Partly cloudy
19°9°10%⌄
Wind7 mph S
Gusts14 mph
UV index5 – Moderate
Precip chance10%
Sunrise06:51
Sunset19:26
Monday 14/9 Showers
26°15°5.8 mm⌄
Wind9 mph SW
Gusts19 mph
UV index7 – High
Precip chance79%
Sunrise06:52
Sunset19:24
Tuesday 15/9 Showers
21°16°5.3 mm⌄
Wind14 mph SW
Gusts37 mph
UV index5 – Moderate
Precip chance84%
Sunrise06:53
Sunset19:23
Wednesday 16/9 Showers
16°7°2.8 mm⌄
Wind11 mph W
Gusts28 mph
UV index3 – Moderate
Precip chance82%
Sunrise06:54
Sunset19:21
Thursday 17/9 Rain (climatological)
21°13°15.2 mm⌄
Day≈18–24°
Night≈10–16°
Precip≈10.6 in / September
(climatological)Typical range for these dates · 1991–2020
Friday 18/9 Partly cloudy (climatological)
23°14°20%⌄
Day≈20–26°
Night≈11–17°
Precip≈10.6 in / September
(climatological)Typical range for these dates · 1991–2020
Saturday 19/9 Partly cloudy (climatological)
23°14°20%⌄
Day≈20–26°
Night≈11–17°
Precip≈10.6 in / September
(climatological)Typical range for these dates · 1991–2020
Sunday 20/9 Rain (climatological)
21°12°31.4 mm⌄
Day≈18–24°
Night≈9–15°
Precip≈10.6 in / September
(climatological)Typical range for these dates · 1991–2020
Monday 21/9 Partly cloudy (climatological)
21°12°20%⌄
Day≈18–24°
Night≈9–15°
Precip≈10.6 in / September
(climatological)Typical range for these dates · 1991–2020
Tuesday 22/9 Partly cloudy (climatological)
17°10°20%⌄
Day≈14–20°
Night≈7–13°
Precip≈10.6 in / September
(climatological)Typical range for these dates · 1991–2020
Wednesday 23/9 Rain (climatological)
20°12°26.9 mm⌄
Day≈17–23°
Night≈9–15°
Precip≈10.6 in / September
(climatological)Typical range for these dates · 1991–2020
Thursday 24/9 Partly cloudy (climatological)
22°13°20%⌄
Day≈19–25°
Night≈10–16°
Precip≈10.6 in / September
(climatological)Typical range for these dates · 1991–2020
Friday 25/9 Partly cloudy (climatological)
21°12°20%⌄
Day≈18–24°
Night≈9–15°
Precip≈10.6 in / September
(climatological)Typical range for these dates · 1991–2020
Saturday 26/9 Rain (climatological)
22°13°13.5 mm⌄
Day≈19–25°
Night≈10–16°
Precip≈10.6 in / September
(climatological)Typical range for these dates · 1991–2020
Sunday 27/9 Partly cloudy (climatological)
23°13°20%⌄
Day≈20–26°
Night≈10–16°
Precip≈10.6 in / September
(climatological)Typical range for these dates · 1991–2020
Monday 28/9 Partly cloudy (climatological)
19°11°20%⌄
Day≈16–22°
Night≈8–14°
Precip≈10.6 in / September
(climatological)Typical range for these dates · 1991–2020
Tuesday 29/9 Rain (climatological)
18°10°16.1 mm⌄
Day≈15–21°
Night≈7–13°
Precip≈10.6 in / September
(climatological)Typical range for these dates · 1991–2020
Wednesday 30/9 Partly cloudy (climatological)
20°12°20%⌄
Day≈17–23°
Night≈9–15°
Precip≈10.6 in / September
(climatological)Typical range for these dates · 1991–2020
Thursday 1/10 Partly cloudy (climatological)
12°5°20%⌄
Day≈9–15°
Night≈2–8°
Precip≈10.6 in / October
(climatological)Typical range for these dates · 1991–2020
Friday 2/10 Rain (climatological)
16°7°18.8 mm⌄
Day≈13–19°
Night≈4–10°
Precip≈10.6 in / October
(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 Port Allegany, 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.