Observed 8:55 PM EDT at KTHV

Winterstown, PA weather

Clear and 39°4°.

Forecasts agree

Now 39°4°

Clear

Wind: Calm; Light through 9 AM
Dew point: 36°2°; Comfortable
UV tomorrow: 4Moderate; Moderate 11 AM–5 PM · peak 4
Air quality: 89Moderate; Main pollutant: PM2.5 (fine particles)
Pressure: 30.55 inHg1035 hPa; Rising slowly · +0.02 inHg+0.8 hPa in 3 h

No precipitation expected in the next 2 hours.

From forecast models

Next 48 hours

Good hours for

Low 36°2° tomorrow at 7 AM
Above 50°10° tomorrow by 10 AM
High 64°18° tomorrow at 4 PM
Below 50°10° tomorrow night after 8 PM

TonightDown to 37°3° by 5 AM · Clear
Tomorrow morningUp to 55°13° by 11 AM · Clear
Tomorrow afternoonUp to 64°18° by 4 PM · Clear
Tomorrow nightDown to 41°5° by 4 AM · Clear
Monday morningUp to 57°14° by 11 AM · Clear
Monday afternoonUp to 67°19° by 5 PM · Clear
Monday nightDown to 57°14° by 8 PM · Clear

Hourly forecast, next 48 hours, in the place's local time
Hour	Conditions	Temperature	Feels like	Precipitation	Wind	Humidity	Cloud cover	UV index
Sat 9p	Clear	44°7° (likely 44°7° to 46°8°)	44°7°	0%	0 mph0 km/h, gusts 6 mph10 km/h	79%	0%	0
Sat 10p	Clear	43°6° (likely 43°6° to 46°8°)	43°6°	0%	0 mph0 km/h, gusts 6 mph9 km/h	82%	0%	0
Sat 11p	Clear	41°5° (likely 41°5° to 46°8°)	41°5°	0%	0 mph0 km/h, gusts 6 mph9 km/h	86%	0%	0
Sun 12a	Clear	40°4° (likely 40°4° to 45°7°)	40°4°	0%	0 mph0 km/h, gusts 5 mph7 km/h	89%	0%	0
Sun 1a	Clear	40°4° (likely 40°4° to 44°7°)	40°4°	0%	0 mph0 km/h, gusts 4 mph7 km/h	85%	0%	0
Sun 2a	Clear	39°4° (likely 39°4° to 43°6°)	39°4°	0%	0 mph0 km/h, gusts 4 mph7 km/h	92%	0%	0
Sun 3a	Clear	39°4° (likely 39°4° to 43°6°)	39°4°	0%	0 mph0 km/h, gusts 3 mph5 km/h	92%	0%	0
Sun 4a	Clear	38°3° (likely 38°3° to 42°6°)	38°3°	0%	0 mph0 km/h, gusts 2 mph4 km/h	96%	0%	0
Sun 5a	Clear	37°3° (likely 37°3° to 42°6°)	37°3°	0%	0 mph0 km/h, gusts 2 mph3 km/h	100%	0%	0
Sun 6a	Clear	37°3° (likely 37°3° to 41°5°)	37°3°	0%	0 mph0 km/h, gusts 1 mph2 km/h	100%	2%	0
Sun 7a	Sunny	36°2° (likely 36°2° to 41°5°)	36°2°	0%	0 mph0 km/h, gusts 1 mph2 km/h	96%	4%	0
Sun 8a	Sunny	37°3° (likely 37°3° to 40°4°)	37°3°	0%	0 mph0 km/h, gusts 1 mph2 km/h	96%	5%	0
Sun 9a	Sunny	43°6° (likely 41°5° to 45°7°)	43°6°	0%	0 mph0 km/h, gusts 1 mph2 km/h	86%	4%	1
Sun 10a	Sunny	50°10° (likely 50°10° to 52°11°)	50°10°	0%	0 mph0 km/h, gusts 4 mph6 km/h	71%	2%	2
Sun 11a	Sunny	55°13° (likely 55°13° to 57°14°)	55°13°	0%	0 mph0 km/h, gusts 5 mph8 km/h	61%	1%	3
Sun 12p	Sunny	58°14° (likely 58°14° to 59°15°)	58°14°	0%	0 mph0 km/h, gusts 7 mph11 km/h	55%	1%	4
Sun 1p	Sunny	61°16° (likely 60°16° to 61°16°)	61°16°	0%	0 mph0 km/h, gusts 7 mph11 km/h	51%	1%	4
Sun 2p	Sunny	62°17° (likely 61°16° to 62°17°)	62°17°	0%	1 mph2 km/h from SW, gusts 7 mph11 km/h	48%	5%	4
Sun 3p	Sunny	63°17° (likely 62°17° to 63°17°)	63°17°	0%	0 mph0 km/h, gusts 7 mph12 km/h	48%	4%	4
Sun 4p	Sunny	64°18° (likely 62°17° to 64°18°)	64°18°	0%	1 mph2 km/h from SW, gusts 8 mph12 km/h	46%	4%	3
Sun 5p	Sunny	62°17° (likely 60°16° to 62°17°)	62°17°	0%	1 mph2 km/h from S, gusts 6 mph10 km/h	52%	10%	1
Sun 6p	Clear	59°15° (likely 55°13° to 59°15°)	59°15°	0%	0 mph0 km/h, gusts 5 mph8 km/h	57%	2%	0
Sun 7p	Clear	55°13° (likely 52°11° to 55°13°)	55°13°	0%	0 mph0 km/h, gusts 4 mph7 km/h	64%	0%	0
Sun 8p	Clear	49°9° (likely 49°9° to 51°11°)	49°9°	0%	0 mph0 km/h, gusts 5 mph8 km/h	83%	0%	0
Sun 9p	Clear	47°8° (likely 47°8° to 49°9°)	47°8°	0%	0 mph0 km/h, gusts 6 mph9 km/h	89%	0%	0
Sun 10p	Clear	45°7° (likely 45°7° to 48°9°)	45°7°	0%	1 mph2 km/h from SW, gusts 6 mph10 km/h	93%	0%	0
Sun 11p	Clear	43°6° (likely 43°6° to 47°8°)	43°6°	0%	1 mph2 km/h from SW, gusts 7 mph11 km/h	100%	0%	0
Mon 12a	Clear	43°6° (likely 43°6° to 47°8°)	43°6°	0%	1 mph2 km/h from SW, gusts 8 mph14 km/h	100%	2%	0
Mon 1a	Clear	42°6° (likely 42°6° to 46°8°)	42°6°	0%	1 mph2 km/h from SW, gusts 8 mph14 km/h	100%	24%	0
Mon 2a	Clear	42°6° (likely 42°6° to 46°8°)	42°6°	0%	1 mph2 km/h from W, gusts 8 mph13 km/h	100%	3%	0
Mon 3a	Clear	42°6° (likely 42°6° to 45°7°)	42°6°	0%	1 mph2 km/h from W, gusts 8 mph13 km/h	100%	1%	0
Mon 4a	Clear	41°5° (likely 41°5° to 45°7°)	41°5°	0%	2 mph3 km/h from W, gusts 9 mph14 km/h	100%	0%	0
Mon 5a	Clear	41°5° (likely 41°5° to 45°7°)	41°5°	0%	2 mph3 km/h from W, gusts 8 mph13 km/h	100%	0%	0
Mon 6a	Clear	41°5° (likely 41°5° to 44°7°)	41°5°	0%	2 mph3 km/h from W, gusts 8 mph14 km/h	100%	1%	0
Mon 7a	Sunny	40°4° (likely 39°4° to 44°7°)	40°4°	0%	2 mph3 km/h from W, gusts 9 mph14 km/h	100%	0%	0
Mon 8a	Sunny	41°5° (likely 38°3° to 44°7°)	41°5°	0%	2 mph3 km/h from W, gusts 8 mph13 km/h	100%	13%	0
Mon 9a	Sunny	46°8° (likely 42°6° to 49°9°)	45°7°	0%	3 mph5 km/h from W, gusts 8 mph13 km/h	96%	14%	1
Mon 10a	Sunny	51°11° (likely 51°11° to 55°13°)	51°11°	0%	5 mph8 km/h from NW, gusts 11 mph17 km/h	86%	0%	2
Mon 11a	Sunny	57°14° (likely 57°14° to 59°15°)	57°14°	0%	5 mph8 km/h from NW, gusts 10 mph16 km/h	72%	0%	3
Mon 12p	Sunny	60°16° (likely 60°16° to 62°17°)	60°16°	0%	6 mph10 km/h from NW, gusts 12 mph19 km/h	64%	0%	4
Mon 1p	Sunny	63°17° (likely 62°17° to 64°18°)	63°17°	0%	7 mph11 km/h from NW, gusts 12 mph20 km/h	60%	1%	4
Mon 2p	Sunny	65°18° (likely 64°18° to 65°18°)	65°18°	0%	7 mph11 km/h from NW, gusts 13 mph20 km/h	56%	6%	4
Mon 3p	Sunny	66°19° (likely 65°18° to 66°19°)	66°19°	0%	7 mph11 km/h from NW, gusts 13 mph21 km/h	54%	0%	4
Mon 4p	Sunny	66°19° (likely 65°18° to 66°19°)	66°19°	0%	7 mph11 km/h from NW, gusts 13 mph21 km/h	56%	2%	3
Mon 5p	Sunny	67°19° (likely 63°17° to 67°19°)	67°19°	0%	6 mph10 km/h from NW, gusts 12 mph20 km/h	54%	1%	1
Mon 6p	Clear	64°18° (likely 57°14° to 64°18°)	64°18°	0%	5 mph8 km/h from NW, gusts 8 mph12 km/h	58%	2%	0
Mon 7p	Clear	60°16° (likely 54°12° to 60°16°)	60°16°	0%	3 mph5 km/h from W, gusts 5 mph8 km/h	67%	1%	0
Mon 8p	Clear	57°14° (likely 53°12° to 57°14°)	57°14°	0%	3 mph5 km/h from W, gusts 5 mph8 km/h	72%	1%	0

Days ahead

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

Today, Oct 24. Sunny. High 60°16°, low 36°2°. Typical 62°17° / 43°6°. Dry. Forecasts agree.
1. Evening
  6 PM–midnight
  Clear, 41°5°
  Dry
2. Overnight
  midnight–6 AM
  Clear, 37°3°
  Dry
Official NWS forecast
Tonight: Patchy frost after 5am. Clear, with a low around 36. Wind around 0 mph.
Forecasts agreeIndependent forecasts are close; the range is narrow.
High, likely
59°15°–60°16°
Low, likely
32°0°–36°2°
Typical high / low
62°17° / 43°6°
Wind
7 mph11 km/h
UV peak
4
Tomorrow, Oct 25. Mostly sunny. High 64°18°, low 40°4°. Typical 62°17° / 42°6°. Dry. Forecasts agree.
1. Morning
  6 AM–noon
  Sunny, 37°3°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 64°18°
  Dry
3. Evening
  6 PM–midnight
  Clear, 49°9°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 41°5°
  Dry
Official NWS forecast
Day: Patchy frost before 9am. Sunny, with a high near 64. West wind around 1 mph.
Night: Mostly clear, with a low around 40. West wind around 2 mph.
Forecasts agreeIndependent forecasts are close; the range is narrow.
High, likely
62°17°–64°18°
Low, likely
37°3°–40°4°
Typical high / low
62°17° / 42°6°
Wind
7 mph11 km/h
UV peak
4
Monday, Oct 26. Mostly sunny. High 67°19°, low 46°8°. Typical 62°17° / 42°6°. Dry. Forecasts agree.
1. Morning
  6 AM–noon
  Sunny, 41°5°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 67°19°
  Dry
3. Evening
  6 PM–midnight
  Clear, 57°14°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 49°10°
  Dry
Official NWS forecast
Day: Sunny, with a high near 67. West wind 2 to 7 mph.
Night: Mostly clear, with a low around 46. Northwest wind around 5 mph.
Forecasts agreeIndependent forecasts are close; the range is narrow.
High, likely
65°18°–67°19°
Low, likely
38°3°–46°8°
Typical high / low
62°17° / 42°6°
Wind
8 mph14 km/h, gusts 21 mph33 km/h
UV peak
4
Tuesday, Oct 27. Mostly sunny. High 63°17°, low 41°5°. Typical 61°16° / 42°6°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Sunny, 48°9°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 61°16°
  Dry
3. Evening
  6 PM–midnight
  Clear, 50°10°
  Dry
4. Overnight
  midnight–6 AM
  Cloudy, 41°5°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Sunny, with a high near 63.
Night: Mostly clear, with a low around 41.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
60°16°–63°17°
Low, likely
41°5°–48°9°
Typical high / low
61°16° / 42°6°
Wind
10 mph15 km/h, gusts 22 mph35 km/h
UV peak
4
Wednesday, Oct 28. Cloudy. High 63°17°, low 45°7°. Typical 61°16° / 41°5°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Cloudy, 41°5°
  Dry
2. Afternoon
  noon–6 PM
  Cloudy, 60°15°
  Dry
3. Evening
  6 PM–midnight
  Cloudy, 51°11°
  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 63.
Night: Mostly cloudy, with a low around 45.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
58°14°–63°17°
Low, likely
37°3°–45°7°
Typical high / low
61°16° / 41°5°
Wind
7 mph11 km/h, gusts 17 mph27 km/h
UV peak
3
Thursday, Oct 29. Cloudy. High 68°20°, low 48°9°. Typical 61°16° / 41°5°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Cloudy, 47°8°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 67°19°
  Dry
3. Evening
  6 PM–midnight
  Clear, 55°13°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 50°10°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Mostly sunny, with a high near 68.
Night: Mostly clear, with a low around 48.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
65°18°–68°20°
Low, likely
45°7°–48°9°
Typical high / low
61°16° / 41°5°
Wind
9 mph14 km/h, gusts 27 mph43 km/h
UV peak
4
Friday, Oct 30. Mostly sunny. High 72°22°, low 49°9°. Typical 60°16° / 41°5°. Dry. Forecasts agree.
1. Morning
  6 AM–noon
  Sunny, 49°10°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 71°22°
  Dry
3. Evening
  6 PM–midnight
  Clear, 60°15°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 49°10°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Sunny, with a high near 72.
Night: Mostly clear, with a low around 49.
Forecasts agreeIndependent forecasts are close; the range is narrow.
High, likely
71°22°–72°22°
Low, likely
45°7°–53°12°
Typical high / low
60°16° / 41°5°
Wind
8 mph12 km/h, gusts 16 mph26 km/h
UV peak
4
Saturday, Oct 31. Partly sunny. High 69°21°, low 48°9°. Typical 60°16° / 40°4°. Dry. Forecasts differ.
1. Morning
  6 AM–noon
  Sunny, 49°9°
  Dry
2. Afternoon
  noon–6 PM
  Cloudy, 67°20°
  Dry
3. Evening
  6 PM–midnight
  Cloudy, 56°13°
  Dry
4. Overnight
  midnight–6 AM
  Cloudy, 50°10°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Mostly sunny, with a high near 69.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
High, likely
60°16°–71°22°
Low, likely
44°7°–51°11°
Typical high / low
60°16° / 40°4°
Wind
10 mph16 km/h, gusts 19 mph30 km/h
UV peak
3
Sunday, Nov 1. Cloudy. High 68°20°, low 50°10°. Typical 60°16° / 40°4°. Rain 0.02 in0.5 mm, 30% chance. Mostly agree.
1. Morning
  6 AM–noon
  Cloudy, 51°11°
  Dry
2. Afternoon
  noon–6 PM
  Cloudy, 67°20°
  30% chance
3. Evening
  6 PM–midnight
  Drizzle, 61°16°
  30% chance · 0.04 in1.1 mm
4. Overnight
  midnight–6 AM
  Drizzle, 60°16°
  30% chance · 0.1 in2.4 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
64°18°–71°22°
Low, likely
45°7°–53°12°
Typical high / low
60°16° / 40°4°
Wind
13 mph21 km/h, gusts 30 mph49 km/h
UV peak
4
Monday, Nov 2. Showers. High 69°21°, low 58°14°. Typical 59°15° / 40°4°. Rain 0.5 in13 mm, 30% chance. Mostly agree.
1. Morning
  6 AM–noon
  Drizzle, 61°16°
  30% chance · 0.06 in1.6 mm
2. Afternoon
  noon–6 PM
  Drizzle, 70°21°
  20% chance · 0.03 in0.7 mm
3. Evening
  6 PM–midnight
  Clear, 61°16°
  30% chance · 0.41 in10 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
67°19°–74°23°
Low, likely
56°13°–65°18°
Typical high / low
59°15° / 40°4°
Wind
17 mph28 km/h, gusts 36 mph58 km/h
UV peak
3

10 days15 days30 days

The outlook

Today
Dry, high 60°, low 36°.
Tomorrow
Dry, high 64°, low 40°, warming up.
Monday
Dry, high 67°, low 46°, warming up.
Rest of week
Mostly dry, highs 63–72°.

Want the meteorologists’ reasoning? Read the NWS forecast discussion (CTP) (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

Susquehanna River at Marietta

16 mi

Below flood stage

Level: 34.4 ft
Flow: 13,500 cfs

Forecast peak 34.4 ft Sun 2 AM

Reading from Sat 7:30 PM · NWS gauge page

Central PA Dams Indian Rock Dam on Codorus Creek

9.2 mi

Below flood stage

Level: 373 ft

Reading from Sat 8 PM · NWS gauge page

Fishing Creek at CRALEY

9.3 mi

Level: 3.9 ft
Flow: 5 cfs

Reading from Sat 8 PM · NWS gauge page

Codorus Creek near York

10 mi

Level: 2.1 ft
Flow: 71 cfs

Reading from Sat 8 PM · NWS gauge page

For your home

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

Heating this week

About 68% less heating than a typical week.

This week 30Typical 95

Heating degree days, base 65°F

Heat-pump hours, next 7 days

h below 47°F: 25
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 18 hours are near freezing and damp, when outdoor units defrost more often.

Comfort

Dry air outside (dew point 36°F).

Open the windows?

Sun, 1:00 PM–5:00 PM

Good stretch to open the windows.

Is this typical?

Millers 4 NE · official normals 1991–2020 · records 1988–2026

Oct 24, today vs a typical year

Today’s expected high is 2°1° colder than typical.

Last 7 days vs normal

On average 2°1° colder than normal (daily mean temperature).

−7°−4°SunOct 18
−4°−2°MonOct 19
+4°+2°TueOct 20
±0°WedOct 21
±0°ThuOct 22
−1°FriOct 23
—SatOct 24

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

Sun & moon

Sun

Daylight: 10 h 48 min; Losing 2 min 25 s a day; shortest Dec 21, 1 h 27 min less
Golden hour: 5:36–6:31 PM; Morning 7:09–8:03 AM
Blue hour: 6:31–6:41 PM; Morning 6:58–7:09 AM; first light 6:58 AM

Stars tonight? Fair

Clear 9:18 PM–6:59 AM, but the moon is 99% lit and up.

Moon

Waxing gibbous

98% lit · growing

Today: sets 5:38 AM · rises 5:10 PM
Full moon: Oct 26
New moon: Nov 9

Looking west from Winterstown. A level horizon.Skyline from USGS elevation data, heights drawn up to 6× taller. Sky, sun and moon as they are now.

Winterstown, PA weather

Next 2 hours

Next 48 hours

Days ahead

The outlook

Today

Tomorrow

Monday

Rest of week

What changed since yesterday

Radar

Rivers

Susquehanna River at Marietta

Central PA Dams Indian Rock Dam on Codorus Creek

Fishing Creek at CRALEY

Codorus Creek near York

For your home

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