Observed 6:55 PM EDT at KOLE

Portville, NY weather

Clear and 52°11°, freeze watch tonight, low 27°−3°.

Forecasts agree

Now 52°11°

Clear

Wind: Calm; Light through 8 AM
Dew point: 19°−7°; Dry · up to 32°0° by 9 PM
UV tomorrow: 4Moderate; Moderate 12–4 PM · peak 4
Pressure: 30.5 inHg1033 hPa; Rising slowly · +0.03 inHg+1.0 hPa in 3 h

No precipitation expected in the next 2 hours.

From forecast models

Next 48 hours

7°4° warmer than this time yesterday (45°7° then, 52°11° now)

Good hours for

Hard freeze tonight 1–10 AM (low 27°−3°)
Above 40°4° tomorrow by 10 AM
High 63°17° tomorrow at 3 PM
Drops 13°7° tomorrow night 6–9 PM (59°15° → 46°8°)
Below 50°10° tomorrow night after 8 PM

TonightDown to 28°−2° by 5 AM · freezing, low 28°−2° · Clear
Tomorrow morningUp to 49°9° by 11 AM · freezing, low 27°−3° · Clear
Tomorrow afternoonUp to 63°17° by 3 PM · Clear
Tomorrow nightDown to 36°2° by 5 AM · Partly cloudy
Monday morningUp to 57°14° by 11 AM · Partly cloudy
Monday afternoonUp to 68°20° by 3 PM · Partly cloudy

Hourly forecast, next 48 hours, in the place's local time
Hour	Conditions	Temperature	Feels like	Precipitation	Wind	Humidity	Cloud cover	UV index
Sat 8p	Clear	45°7° (likely 43°6° to 49°9°)	45°7°	0%	2 mph3 km/h from SE, gusts 6 mph10 km/h	59%	0%	0
Sat 9p	Clear	40°4° (likely 40°4° to 47°8°)	40°4°	0%	1 mph2 km/h from SE, gusts 4 mph6 km/h	72%	0%	0
Sat 10p	Clear	38°3° (likely 38°3° to 46°8°)	38°3°	0%	1 mph2 km/h from SE, gusts 3 mph5 km/h	79%	0%	0
Sat 11p	Clear	36°2° (likely 36°2° to 44°7°)	36°2°	0%	1 mph2 km/h from S, gusts 3 mph5 km/h	85%	0%	0
Sun 12a	Clear	34°1° (likely 34°1° to 43°6°)	34°1°	0%	2 mph3 km/h from S, gusts 4 mph6 km/h	91%	0%	0
Sun 1a	Clear	32°0° (likely 32°0° to 42°6°)	32°0°	0%	2 mph3 km/h from S, gusts 3 mph6 km/h	95%	0%	0
Sun 2a	Clear	31°−1° (likely 31°−1° to 41°5°)	31°−1°	0%	1 mph2 km/h from SE, gusts 4 mph6 km/h	98%	0%	0
Sun 3a	Clear	29°−2° (likely 29°−2° to 40°4°)	29°−2°	0%	1 mph2 km/h from SE, gusts 4 mph6 km/h	100%	0%	0
Sun 4a	Clear	29°−2° (likely 29°−2° to 39°4°)	29°−2°	0%	1 mph2 km/h from SE, gusts 5 mph7 km/h	100%	0%	0
Sun 5a	Clear	28°−2° (likely 28°−2° to 39°4°)	28°−2°	0%	1 mph2 km/h from SE, gusts 4 mph6 km/h	100%	0%	0
Sun 6a	Clear	27°−3° (likely 27°−3° to 38°3°)	27°−3°	0%	1 mph2 km/h from S, gusts 4 mph6 km/h	100%	0%	0
Sun 7a	Clear	27°−3° (likely 27°−3° to 37°3°)	27°−3°	0%	1 mph2 km/h from SE, gusts 4 mph7 km/h	100%	0%	0
Sun 8a	Sunny	27°−3° (likely 27°−3° to 37°3°)	27°−3°	0%	1 mph2 km/h from SE, gusts 4 mph6 km/h	100%	0%	0
Sun 9a	Sunny	31°−1° (likely 31°−1° to 40°4°)	31°−1°	0%	2 mph3 km/h from S, gusts 4 mph6 km/h	100%	4%	0
Sun 10a	Sunny	41°5° (likely 41°5° to 48°9°)	39°4°	0%	3 mph5 km/h from S, gusts 10 mph16 km/h	75%	0%	1
Sun 11a	Sunny	49°9° (likely 49°9° to 53°12°)	48°9°	0%	5 mph8 km/h from S, gusts 10 mph16 km/h	61%	0%	2
Sun 12p	Sunny	56°13° (likely 55°13° to 57°14°)	56°13°	0%	6 mph10 km/h from S, gusts 11 mph18 km/h	48%	0%	3
Sun 1p	Sunny	60°16° (likely 58°14° to 61°16°)	60°16°	0%	7 mph11 km/h from S, gusts 10 mph17 km/h	38%	1%	4
Sun 2p	Sunny	62°17° (likely 60°16° to 62°17°)	62°17°	0%	6 mph10 km/h from S, gusts 10 mph17 km/h	34%	0%	4
Sun 3p	Sunny	63°17° (likely 61°16° to 64°18°)	63°17°	0%	6 mph10 km/h from SW, gusts 10 mph17 km/h	33%	1%	3
Sun 4p	Sunny	63°17° (likely 61°16° to 64°18°)	63°17°	0%	5 mph8 km/h from SW, gusts 10 mph16 km/h	34%	2%	2
Sun 5p	Mostly sunny	63°17° (likely 59°15° to 63°17°)	63°17°	0%	6 mph10 km/h from S, gusts 10 mph16 km/h	35%	12%	1
Sun 6p	Clear	59°15° (likely 54°12° to 59°15°)	59°15°	0%	5 mph8 km/h from S, gusts 7 mph12 km/h	41%	39%	0
Sun 7p	Clear	54°12° (likely 50°10° to 54°12°)	54°12°	0%	3 mph5 km/h from S, gusts 6 mph9 km/h	49%	41%	0
Sun 8p	Partly cloudy	46°8° (likely 46°8° to 50°10°)	46°8°	0%	2 mph3 km/h from S, gusts 5 mph8 km/h	67%	45%	0
Sun 9p	Partly cloudy	43°6° (likely 43°6° to 47°8°)	43°6°	0%	1 mph2 km/h from S, gusts 5 mph8 km/h	77%	60%	0
Sun 10p	Partly cloudy	41°5° (likely 41°5° to 46°8°)	41°5°	0%	1 mph2 km/h from S, gusts 4 mph7 km/h	82%	71%	0
Sun 11p	Partly cloudy	40°4° (likely 40°4° to 46°8°)	40°4°	0%	1 mph2 km/h from S, gusts 4 mph6 km/h	88%	74%	0
Mon 12a	Partly cloudy	39°4° (likely 39°4° to 47°8°)	39°4°	0%	1 mph2 km/h from S, gusts 5 mph7 km/h	92%	74%	0
Mon 1a	Cloudy	38°3° (likely 38°3° to 46°8°)	38°3°	0%	1 mph2 km/h from S, gusts 3 mph5 km/h	95%	84%	0
Mon 2a	Partly cloudy	37°3° (likely 37°3° to 45°7°)	37°3°	0%	1 mph2 km/h from S, gusts 3 mph6 km/h	98%	67%	0
Mon 3a	Partly cloudy	37°3° (likely 37°3° to 45°7°)	37°3°	0%	1 mph2 km/h from SW, gusts 3 mph5 km/h	100%	72%	0
Mon 4a	Partly cloudy	37°3° (likely 37°3° to 43°6°)	37°3°	0%	1 mph2 km/h from SW, gusts 2 mph4 km/h	100%	30%	0
Mon 5a	Clear	36°2° (likely 36°2° to 43°6°)	36°2°	0%	1 mph2 km/h from SW, gusts 3 mph5 km/h	100%	17%	0
Mon 6a	Partly cloudy	37°3° (likely 37°3° to 42°6°)	37°3°	0%	1 mph2 km/h from SW, gusts 3 mph5 km/h	100%	34%	0
Mon 7a	Mostly clear	36°2° (likely 36°2° to 41°5°)	36°2°	0%	1 mph2 km/h from SW, gusts 3 mph6 km/h	99%	27%	0
Mon 8a	Mostly sunny	36°2° (likely 36°2° to 42°6°)	36°2°	0%	1 mph2 km/h from SW, gusts 4 mph6 km/h	100%	42%	0
Mon 9a	Mostly sunny	41°5° (likely 39°4° to 46°8°)	41°5°	0%	2 mph3 km/h from W, gusts 3 mph5 km/h	100%	30%	0
Mon 10a	Mostly sunny	49°9° (likely 49°9° to 53°12°)	48°9°	0%	3 mph5 km/h from W, gusts 6 mph10 km/h	84%	29%	1
Mon 11a	Mostly sunny	57°14° (likely 56°13° to 59°15°)	57°14°	0%	3 mph5 km/h from W, gusts 11 mph17 km/h	67%	51%	2
Mon 12p	Mostly sunny	62°17° (likely 61°16° to 63°17°)	62°17°	0%	5 mph8 km/h from W, gusts 14 mph23 km/h	58%	48%	3
Mon 1p	Mostly sunny	65°18° (likely 64°18° to 65°18°)	65°18°	0%	5 mph8 km/h from W, gusts 16 mph25 km/h	52%	47%	4
Mon 2p	Mostly sunny	67°19° (likely 64°18° to 67°19°)	67°19°	0%	6 mph10 km/h from W, gusts 17 mph27 km/h	49%	54%	4
Mon 3p	Mostly sunny	68°20° (likely 64°18° to 68°20°)	68°20°	0%	6 mph10 km/h from W, gusts 16 mph26 km/h	47%	36%	3
Mon 4p	Mostly sunny	67°19° (likely 63°17° to 67°19°)	67°19°	0%	6 mph10 km/h from NW, gusts 17 mph27 km/h	47%	61%	2
Mon 5p	Cloudy	65°18° (likely 60°16° to 65°18°)	65°18°	0%	6 mph10 km/h from NW, gusts 17 mph27 km/h	50%	70%	1
Mon 6p	Partly cloudy	62°17° (likely 55°13° to 62°17°)	62°17°	0%	5 mph8 km/h from NW, gusts 13 mph21 km/h	58%	56%	0
Mon 7p	Partly cloudy	57°14° (likely 51°11° to 58°14°)	57°14°	0%	5 mph8 km/h from NW, gusts 8 mph12 km/h	69%	54%	0

Days ahead

Shaded: typical range for these dates (1991–2020)

Today, Oct 24. Sunny. High 61°16°, low 27°−3°. Typical 56°13° / 35°2°. Dry. Forecasts agree.
1. Evening
  6 PM–midnight
  Clear, 45°7°
  Dry
2. Overnight
  midnight–6 AM
  Clear, 28°−2°
  Dry
Official NWS forecast
Tonight: Patchy fog after 1am. Clear, with a low around 27. Southeast wind around 2 mph.
Forecasts agreeIndependent forecasts are close; the range is narrow.
High, likely
60°16°–62°17°
Low, likely
27°−3°–34°1°
Typical high / low
56°13° / 35°2°
Wind
7 mph12 km/h, gusts 15 mph24 km/h
UV peak
4
Tomorrow, Oct 25. Cloudy. High 63°17°, low 36°2°. Typical 56°13° / 35°2°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Sunny, 27°−3°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 63°17°
  Dry
3. Evening
  6 PM–midnight
  Partly cloudy, 46°8°
  Dry
4. Overnight
  midnight–6 AM
  Partly cloudy, 36°2°
  Dry
Official NWS forecast
Day: Patchy fog before 10am. Sunny, with a high near 63. South wind 1 to 7 mph.
Night: Partly cloudy, with a low around 36. South wind 1 to 5 mph.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
61°16°–64°18°
Low, likely
30°−1°–37°3°
Typical high / low
56°13° / 35°2°
Wind
7 mph11 km/h, gusts 17 mph27 km/h
UV peak
4
Monday, Oct 26. Cloudy. High 68°20°, low 33°1°. Typical 55°13° / 34°1°. Dry. Forecasts agree.
1. Morning
  6 AM–noon
  Mostly sunny, 36°2°
  Dry
2. Afternoon
  noon–6 PM
  Mostly sunny, 68°20°
  Dry
3. Evening
  6 PM–midnight
  Cloudy, 53°12°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 40°5°
  Dry
Official NWS forecast
Day: Sunny, with a high near 68. West wind 1 to 6 mph.
Night: Partly cloudy, with a low around 33. North wind 1 to 5 mph.
Forecasts agreeIndependent forecasts are close; the range is narrow.
High, likely
64°18°–68°20°
Low, likely
33°1°–41°5°
Typical high / low
55°13° / 34°1°
Wind
10 mph16 km/h, gusts 22 mph36 km/h
UV peak
4
Tuesday, Oct 27. Partly sunny. High 59°15°, low 31°−1°. Typical 55°13° / 34°1°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Mostly sunny, 38°3°
  Dry
2. Afternoon
  noon–6 PM
  Cloudy, 55°13°
  Dry
3. Evening
  6 PM–midnight
  Clear, 43°6°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 37°3°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Mostly sunny, with a high near 59. Northeast wind around 2 mph.
Night: Partly cloudy, with a low around 31. East wind around 3 mph.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
54°12°–59°15°
Low, likely
31°−1°–40°4°
Typical high / low
55°13° / 34°1°
Wind
7 mph11 km/h, gusts 15 mph24 km/h
UV peak
4
Wednesday, Oct 28. Cloudy. High 64°18°, low 41°5°. Typical 54°12° / 34°1°. Dry. Forecasts differ.
1. Morning
  6 AM–noon
  Cloudy, 41°5°
  Dry
2. Afternoon
  noon–6 PM
  Cloudy, 61°16°
  Dry
3. Evening
  6 PM–midnight
  Cloudy, 52°11°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 45°7°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Partly sunny, with a high near 64. Southeast wind 2 to 6 mph.
Night: Mostly cloudy, with a low around 41.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
High, likely
59°15°–64°18°
Low, likely
36°2°–41°5°
Typical high / low
54°12° / 34°1°
Wind
10 mph17 km/h, gusts 19 mph31 km/h
UV peak
3
Thursday, Oct 29. Partly sunny. High 70°21°, low 44°7°. Typical 54°12° / 33°1°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Sunny, 45°7°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 68°20°
  Dry
3. Evening
  6 PM–midnight
  Partly cloudy, 57°14°
  Dry
4. Overnight
  midnight–6 AM
  Cloudy, 52°11°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Mostly sunny, with a high near 70.
Night: Partly cloudy, with a low around 44.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
67°19°–70°21°
Low, likely
40°4°–48°9°
Typical high / low
54°12° / 33°1°
Wind
12 mph19 km/h, gusts 32 mph51 km/h
UV peak
4
Friday, Oct 30. Partly sunny. High 68°20°, low 42°6°. Typical 54°12° / 33°1°. Dry. Forecasts differ.
1. Morning
  6 AM–noon
  Partly sunny, 50°10°
  Dry
2. Afternoon
  noon–6 PM
  Partly sunny, 65°19°
  Dry
3. Evening
  6 PM–midnight
  Partly cloudy, 54°12°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 47°8°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Mostly sunny, with a high near 68.
Night: Partly cloudy, with a low around 42.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
High, likely
61°16°–71°22°
Low, likely
42°6°–49°9°
Typical high / low
54°12° / 33°1°
Wind
9 mph14 km/h, gusts 30 mph49 km/h
UV peak
3
Saturday, Oct 31. Partly sunny. High 68°20°, low 46°8°. Typical 53°12° / 33°1°. Dry. Forecasts differ.
1. Morning
  6 AM–noon
  Cloudy, 47°8°
  Dry
2. Afternoon
  noon–6 PM
  Cloudy, 67°19°
  Dry
3. Evening
  6 PM–midnight
  Cloudy, 57°14°
  Dry
4. Overnight
  midnight–6 AM
  Cloudy, 53°11°
  20% chance
Hours this far out come from computer models only.
Official NWS forecast
Day: Mostly sunny, with a high near 68.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
High, likely
61°16°–69°21°
Low, likely
36°2°–51°11°
Typical high / low
53°12° / 33°1°
Wind
9 mph14 km/h, gusts 23 mph37 km/h
UV peak
2
Sunday, Nov 1. Drizzle. High 65°18°, low 51°11°. Typical 53°12° / 32°0°. Rain 0.13 in3.3 mm, 50% chance. Mostly agree.
1. Morning
  6 AM–noon
  Cloudy, 52°11°
  30% chance
2. Afternoon
  noon–6 PM
  Drizzle, 64°18°
  40% chance · 0.04 in0.9 mm
3. Evening
  6 PM–midnight
  Drizzle, 58°14°
  50% chance · 0.17 in4.2 mm
4. Overnight
  midnight–6 AM
  Drizzle, 58°15°
  50% chance · 0.08 in2 mm
Hours this far out come from computer models only.
The National Weather Service writes about seven days ahead; this day is our model forecast only.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
60°16°–66°19°
Low, likely
48°9°–58°14°
Typical high / low
53°12° / 32°0°
Wind
15 mph24 km/h, gusts 38 mph62 km/h
UV peak
2
Monday, Nov 2. Drizzle. High 63°17°, low 52°11°. Typical 52°11° / 32°0°. Rain 0.51 in13 mm, 50% chance. Mostly agree.
1. Morning
  6 AM–noon
  Drizzle, 59°15°
  40% chance · 0.03 in0.8 mm
2. Afternoon
  noon–6 PM
  Drizzle, 62°17°
  40% chance · 0.35 in8.8 mm
3. Evening
  6 PM–midnight
  Drizzle, 55°13°
  40% chance · 0.11 in2.7 mm
Hours this far out come from computer models only.
The National Weather Service writes about seven days ahead; this day is our model forecast only.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
59°15°–65°18°
Low, likely
51°11°–54°12°
Typical high / low
52°11° / 32°0°
Wind
17 mph28 km/h, gusts 37 mph59 km/h
UV peak
2

10 days15 days30 days

The outlook

Today
Dry, high 61°, low 27°.
Tomorrow
Dry, high 63°, low 36°.
Monday
Dry, high 68°, low 33°, warming up.
Rest of week
Highs 59–70°; chance of precipitation on Sunday, Monday.

Want the meteorologists’ reasoning? Read the NWS forecast discussion (BUF) (opens in a new tab)

What changed since yesterday

No meaningful changes from yesterday’s forecast.

Radar

Radar data: NOAA MRMS, rendered by forecast.blue

Radar loads when scrolled into view

Full-screen radar

Rivers

NOAA river gauges within 25 mi

Allegheny River at Eldred

5.7 mi

Below flood stage

Level: 2.4 ft
Flow: 140 cfs

Forecast peak 2.4 ft Sat 8 PM

Reading from Sat 6:30 PM · NWS gauge page

Allegheny River at Olean

6.4 mi

Below flood stage

Level: 1.1 ft
Flow: 201 cfs

Forecast peak 1.1 ft Sat 8 PM

Reading from Sat 6:30 PM · NWS gauge page

Genesee River at Wellsville

20 mi

Below flood stage

Level: 4.4 ft
Flow: 45 cfs

Forecast peak 4.4 ft Sat 8 PM

Reading from Sat 6:45 PM · NWS gauge page

Allegheny River at Salamanca

21 mi

Below flood stage

Level: 2.7 ft
Flow: 253 cfs

Forecast peak 2.7 ft Sat 8 PM

Reading from Sat 6:45 PM · NWS gauge page

For your home

What this week’s weather means for heating, cooling, pipes and fresh air.

Pipes: watch the cold

Tonight’s low: 27°−3°

Overnight low near 27°F — not yet at drip-the-faucets cold, but worth watching if it's forecast to drop further.

Heating this week

About 73% less heating than a typical week.

This week 38Typical 144

Heating degree days, base 65°F

Heat-pump hours, next 7 days

h below 47°F: 28
h below 17°F: 0
h below 5°F: 0

47, 17 and 5°F are the test points heat pumps are rated at. About 20 hours are near freezing and damp, when outdoor units defrost more often.

Comfort

Dry air outside (dew point 19°F).

Open the windows?

Sun, 1:00 PM–5:00 PM

Good stretch to open the windows (air quality forecast not available for part of this window).

Is this typical?

OLEAN · official normals 1991–2020 · records 1927–2026

Oct 24, today vs a typical year

Today’s expected high is 5°3° warmer than typical.

Last 7 days vs normal

On average 1°0° colder than normal (daily mean temperature).

−1°MonOct 19
+2°+1°TueOct 20
±0°WedOct 21
—ThuOct 22
−1°FriOct 23
−1°SatOct 24
—SunOct 25

Portville weather by month: normals, records, snow and freeze dates

Sun & moon

Sun

Daylight: 10 h 41 min; Losing 2 min 44 s a day; shortest Dec 21, 1 h 35 min less
Golden hour: 5:39–6:35 PM; Morning 7:18–8:15 AM
Blue hour: 6:35–6:46 PM; Morning 7:07–7:18 AM; first light 7:07 AM

Stars tonight? Fair

Clear 8:14 PM–7:09 AM, but the moon is 99% lit and up.

Moon

Waxing gibbous

98% lit · growing

Today: sets 5:47 AM · rises 5:15 PM
Full moon: Oct 26
New moon: Nov 9

Looking west from Portville. The highest point on the skyline is about 2,400 ft, 13 mi away.Skyline from USGS elevation data, heights drawn up to 3× taller. Sky, sun and moon as they are now.

Portville, NY weather

Next 2 hours

Next 48 hours

Days ahead

The outlook

Today

Tomorrow

Monday

Rest of week

What changed since yesterday

Radar

Rivers

Allegheny River at Eldred

Allegheny River at Olean

Genesee River at Wellsville

Allegheny River at Salamanca

For your home

Pipes: watch the cold

Heating this week

Heat-pump hours, next 7 days

Comfort

Open the windows?

Is this typical?

Oct 24, today vs a typical year

Last 7 days vs normal

Sun & moon

Sun

Stars tonight? Fair

Moon