Observed 10:55 AM EDT at KLNS

Cornwall, PA weather

Sunny and 52°11°.

Forecasts agree

Now 52°11°

Sunny

Wind: Calm; Light through 11 PM
Dew point: 43°6°; Comfortable
UV index: 2Low; Moderate 12–3 PM · peak 3
Air quality: 75Moderate; Main pollutant: PM2.5 (fine particles)
Pressure: 30.58 inHg1036 hPa; Steady over the last 3 h

No precipitation expected in the next 2 hours.

From forecast models

Next 48 hours

Good hours for

High 61°16° today at 4 PM
Below 50°10° tonight after 8 PM
Low 35°2° tomorrow at 7 AM
Above 50°10° tomorrow by 11 AM

This afternoonUp to 61°16° by 4 PM · Clear
TonightDown to 36°2° by 5 AM · Clear
Tomorrow morningUp to 54°12° by 11 AM · Clear
Tomorrow afternoonUp to 63°17° by 5 PM · Clear
Tomorrow nightDown to 37°3° by 5 AM · Clear
Monday morningUp to 49°9° by 10 AM · 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 11a	Sunny	51°11° (likely 50°10° to 53°12°)	51°11°	0%	1 mph2 km/h from NE, gusts 2 mph3 km/h	58%	0%	2
Sat 12p	Sunny	54°12° (likely 53°12° to 56°13°)	54°12°	0%	0 mph0 km/h, gusts 4 mph6 km/h	53%	1%	3
Sat 1p	Sunny	58°14° (likely 55°13° to 58°14°)	58°14°	0%	0 mph0 km/h, gusts 4 mph7 km/h	44%	1%	3
Sat 2p	Sunny	59°15° (likely 57°14° to 59°15°)	59°15°	0%	1 mph2 km/h from S, gusts 4 mph7 km/h	40%	0%	3
Sat 3p	Sunny	60°16° (likely 58°14° to 60°16°)	60°16°	0%	1 mph2 km/h from S, gusts 3 mph5 km/h	39%	0%	2
Sat 4p	Sunny	61°16° (likely 58°14° to 61°16°)	61°16°	0%	1 mph2 km/h from S, gusts 3 mph5 km/h	38%	0%	1
Sat 5p	Sunny	59°15° (likely 56°13° to 59°15°)	59°15°	0%	1 mph2 km/h from S, gusts 4 mph6 km/h	41%	0%	0
Sat 6p	Clear	57°14° (likely 53°12° to 57°14°)	57°14°	0%	1 mph2 km/h from S, gusts 3 mph4 km/h	45%	0%	0
Sat 7p	Clear	53°12° (likely 49°9° to 53°12°)	53°12°	0%	0 mph0 km/h, gusts 1 mph2 km/h	52%	0%	0
Sat 8p	Clear	48°9° (likely 47°8° to 49°9°)	48°9°	0%	0 mph0 km/h, gusts 2 mph3 km/h	63%	0%	0
Sat 9p	Clear	46°8° (likely 45°7° to 48°9°)	46°8°	0%	0 mph0 km/h, gusts 3 mph4 km/h	65%	0%	0
Sat 10p	Clear	44°7° (likely 43°6° to 47°8°)	44°7°	0%	0 mph0 km/h, gusts 4 mph6 km/h	73%	0%	0
Sat 11p	Clear	43°6° (likely 42°6° to 46°8°)	43°6°	0%	0 mph0 km/h, gusts 3 mph5 km/h	73%	0%	0
Sun 12a	Clear	41°5° (likely 41°5° to 46°8°)	41°5°	0%	0 mph0 km/h, gusts 3 mph5 km/h	82%	0%	0
Sun 1a	Clear	40°4° (likely 40°4° to 45°7°)	40°4°	0%	0 mph0 km/h, gusts 3 mph5 km/h	82%	0%	0
Sun 2a	Clear	39°4° (likely 39°4° to 45°7°)	39°4°	0%	0 mph0 km/h, gusts 3 mph4 km/h	85%	0%	0
Sun 3a	Clear	38°3° (likely 38°3° to 45°7°)	38°3°	0%	0 mph0 km/h, gusts 3 mph5 km/h	89%	0%	0
Sun 4a	Clear	37°3° (likely 37°3° to 44°7°)	37°3°	0%	0 mph0 km/h, gusts 2 mph3 km/h	89%	0%	0
Sun 5a	Clear	36°2° (likely 35°2° to 44°7°)	36°2°	0%	0 mph0 km/h, gusts 1 mph2 km/h	92%	0%	0
Sun 6a	Clear	36°2° (likely 34°1° to 42°6°)	36°2°	0%	0 mph0 km/h, gusts 2 mph4 km/h	92%	0%	0
Sun 7a	Sunny	35°2° (likely 33°1° to 42°6°)	35°2°	0%	0 mph0 km/h, gusts 1 mph2 km/h	92%	1%	0
Sun 8a	Sunny	37°3° (likely 33°1° to 42°6°)	37°3°	0%	0 mph0 km/h, gusts 1 mph2 km/h	89%	9%	0
Sun 9a	Sunny	41°5° (likely 37°3° to 45°7°)	41°5°	0%	0 mph0 km/h, gusts 2 mph3 km/h	89%	11%	1
Sun 10a	Sunny	49°9° (likely 46°8° to 51°11°)	49°9°	0%	0 mph0 km/h, gusts 3 mph5 km/h	71%	0%	2
Sun 11a	Sunny	54°12° (likely 53°12° to 54°12°)	54°12°	0%	1 mph2 km/h from W, gusts 5 mph7 km/h	61%	1%	3
Sun 12p	Sunny	57°14° (likely 55°13° to 58°14°)	57°14°	0%	2 mph3 km/h from W, gusts 7 mph11 km/h	55%	1%	4
Sun 1p	Sunny	59°15° (likely 57°14° to 60°16°)	59°15°	0%	3 mph5 km/h from W, gusts 8 mph13 km/h	51%	1%	4
Sun 2p	Sunny	62°17° (likely 58°14° to 62°17°)	62°17°	0%	3 mph5 km/h from W, gusts 8 mph13 km/h	46%	2%	4
Sun 3p	Sunny	62°17° (likely 59°15° to 62°17°)	62°17°	0%	3 mph5 km/h from W, gusts 8 mph12 km/h	46%	2%	3
Sun 4p	Sunny	62°17° (likely 59°15° to 62°17°)	62°17°	0%	3 mph5 km/h from SW, gusts 8 mph12 km/h	46%	2%	2
Sun 5p	Sunny	63°17° (likely 58°14° to 63°17°)	63°17°	0%	3 mph5 km/h from SW, gusts 8 mph12 km/h	46%	1%	1
Sun 6p	Clear	59°15° (likely 55°13° to 59°15°)	59°15°	0%	2 mph3 km/h from SW, gusts 5 mph7 km/h	53%	1%	0
Sun 7p	Clear	55°13° (likely 51°11° to 55°13°)	55°13°	0%	0 mph0 km/h, gusts 5 mph7 km/h	61%	1%	0
Sun 8p	Clear	53°12° (likely 49°9° to 53°12°)	53°12°	0%	0 mph0 km/h, gusts 5 mph8 km/h	66%	0%	0
Sun 9p	Clear	48°9° (likely 47°8° to 50°10°)	48°9°	0%	0 mph0 km/h, gusts 5 mph9 km/h	77%	0%	0
Sun 10p	Clear	45°7° (likely 45°7° to 48°9°)	45°7°	0%	0 mph0 km/h, gusts 4 mph6 km/h	86%	0%	0
Sun 11p	Clear	44°7° (likely 44°7° to 47°8°)	44°7°	0%	0 mph0 km/h, gusts 5 mph7 km/h	89%	0%	0
Mon 12a	Clear	42°6° (likely 42°6° to 46°8°)	42°6°	0%	0 mph0 km/h, gusts 5 mph8 km/h	96%	11%	0
Mon 1a	Clear	41°5° (likely 41°5° to 46°8°)	41°5°	0%	1 mph2 km/h from W, gusts 6 mph10 km/h	96%	0%	0
Mon 2a	Clear	40°4° (likely 38°3° to 45°7°)	40°4°	0%	1 mph2 km/h from W, gusts 7 mph11 km/h	100%	7%	0
Mon 3a	Clear	39°4° (likely 36°2° to 44°7°)	39°4°	0%	1 mph2 km/h from W, gusts 7 mph12 km/h	100%	14%	0
Mon 4a	Clear	38°3° (likely 36°2° to 43°6°)	38°3°	0%	2 mph3 km/h from W, gusts 8 mph12 km/h	100%	14%	0
Mon 5a	Clear	37°3° (likely 35°2° to 43°6°)	37°3°	0%	2 mph3 km/h from W, gusts 7 mph12 km/h	100%	16%	0
Mon 6a	Clear	37°3° (likely 35°2° to 42°6°)	37°3°	0%	2 mph3 km/h from W, gusts 6 mph10 km/h	100%	19%	0
Mon 7a	Sunny	37°3° (likely 34°1° to 42°6°)	34°1°	0%	3 mph5 km/h from W, gusts 6 mph9 km/h	100%	18%	0
Mon 8a	Sunny	39°4° (likely 34°1° to 42°6°)	37°3°	0%	3 mph5 km/h from W, gusts 6 mph10 km/h	100%	16%	0
Mon 9a	Sunny	43°6° (likely 36°2° to 45°7°)	41°5°	0%	3 mph5 km/h from W, gusts 5 mph9 km/h	93%	24%	1
Mon 10a	Mostly sunny	49°9° (likely 43°6° to 50°10°)	47°8°	0%	5 mph8 km/h from W, gusts 7 mph10 km/h	83%	7%	2

Days ahead

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

Today, Oct 24. Sunny. High 61°16°, low 35°2°. Typical 61°16° / 41°5°. Dry. Forecasts agree.
1. Afternoon
  noon–6 PM
  Sunny, 61°16°
  Dry
2. Evening
  6 PM–midnight
  Clear, 48°9°
  Dry
3. Overnight
  midnight–6 AM
  Clear, 36°2°
  Dry
Official NWS forecast
Today: Sunny, with a high near 61. Southeast wind around 1 mph.
Tonight: Areas of frost and patchy fog after 2am. Clear, with a low around 35. Southeast wind around 1 mph.
Forecasts agreeIndependent forecasts are close; the range is narrow.
High, likely
58°14°–61°16°
Low, likely
33°1°–36°2°
Typical high / low
61°16° / 41°5°
Wind
6 mph9 km/h
UV peak
4
Tomorrow, Oct 25. Fog. High 64°18°, low 37°3°. Typical 61°16° / 41°5°. Dry. Forecasts agree.
1. Morning
  6 AM–noon
  Sunny, 37°3°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 63°17°
  Dry
3. Evening
  6 PM–midnight
  Clear, 53°12°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 37°3°
  Dry
Official NWS forecast
Day: Areas of frost and patchy fog before 10am. Sunny, with a high near 64. West wind 0 to 3 mph.
Night: Patchy fog between midnight and 4am. Clear, with a low around 37. West wind around 2 mph.
Forecasts agreeIndependent forecasts are close; the range is narrow.
High, likely
59°15°–64°18°
Low, likely
33°1°–42°6°
Typical high / low
61°16° / 41°5°
Wind
6 mph10 km/h, gusts 11 mph18 km/h
UV peak
4
Monday, Oct 26. Mostly sunny. High 68°20°, low 44°7°. Typical 60°16° / 40°4°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Sunny, 39°4°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 64°18°
  Dry
3. Evening
  6 PM–midnight
  Clear, 53°12°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 46°8°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Sunny, with a high near 68. West wind 2 to 8 mph.
Night: Mostly clear, with a low around 44.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
63°17°–68°20°
Low, likely
34°1°–44°7°
Typical high / low
60°16° / 40°4°
Wind
10 mph16 km/h, gusts 17 mph28 km/h
UV peak
4
Tuesday, Oct 27. Mostly sunny. High 63°17°, low 39°4°. Typical 60°16° / 40°4°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Sunny, 44°7°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 61°16°
  Dry
3. Evening
  6 PM–midnight
  Clear, 48°9°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 39°4°
  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 39.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
60°16°–63°17°
Low, likely
39°4°–46°8°
Typical high / low
60°16° / 40°4°
Wind
10 mph17 km/h, gusts 16 mph25 km/h
UV peak
4
Wednesday, Oct 28. Cloudy. High 61°16°, low 43°6°. Typical 60°16° / 40°4°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Sunny, 38°3°
  Dry
2. Afternoon
  noon–6 PM
  Cloudy, 59°15°
  Dry
3. Evening
  6 PM–midnight
  Cloudy, 50°10°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 43°6°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Mostly sunny, with a high near 61.
Night: Mostly cloudy, with a low around 43.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
57°14°–61°16°
Low, likely
36°2°–43°6°
Typical high / low
60°16° / 40°4°
Wind
7 mph12 km/h, gusts 16 mph26 km/h
UV peak
4
Thursday, Oct 29. Partly sunny. High 68°20°, low 48°9°. Typical 59°15° / 39°4°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Sunny, 42°5°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 64°18°
  Dry
3. Evening
  6 PM–midnight
  Clear, 53°11°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 45°7°
  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
62°17°–68°20°
Low, likely
40°4°–48°9°
Typical high / low
59°15° / 39°4°
Wind
8 mph13 km/h, gusts 25 mph40 km/h
UV peak
4
Friday, Oct 30. Mostly sunny. High 70°21°, low 46°8°. Typical 59°15° / 39°4°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Sunny, 44°7°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 68°20°
  Dry
3. Evening
  6 PM–midnight
  Clear, 55°13°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 44°7°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Sunny, with a high near 70.
Night: Mostly clear, with a low around 46.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
67°19°–71°22°
Low, likely
41°5°–47°8°
Typical high / low
59°15° / 39°4°
Wind
13 mph21 km/h, gusts 23 mph37 km/h
UV peak
3
Saturday, Oct 31. Cloudy. High 67°19°, low 44°7°. Typical 58°14° / 39°4°. Dry. Forecasts differ.
1. Morning
  6 AM–noon
  Sunny, 43°6°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 66°19°
  Dry
3. Evening
  6 PM–midnight
  Cloudy, 55°13°
  Dry
4. Overnight
  midnight–6 AM
  Cloudy, 45°7°
  Dry
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.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
High, likely
58°14°–72°22°
Low, likely
39°4°–48°9°
Typical high / low
58°14° / 39°4°
Wind
13 mph20 km/h, gusts 27 mph43 km/h
UV peak
4
Sunday, Nov 1. Cloudy. High 64°18°, low 46°8°. Typical 58°14° / 38°3°. Rain 0.02 in0.5 mm, 30% chance. Forecasts differ.
1. Morning
  6 AM–noon
  Partly sunny, 45°7°
  Dry
2. Afternoon
  noon–6 PM
  Cloudy, 63°17°
  20% chance
3. Evening
  6 PM–midnight
  Cloudy, 53°12°
  30% chance
4. Overnight
  midnight–6 AM
  Cloudy, 49°9°
  40% chance · 0.02 in0.5 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.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
High, likely
52°11°–69°21°
Low, likely
35°2°–53°12°
Typical high / low
58°14° / 38°3°
Wind
9 mph14 km/h, gusts 21 mph33 km/h
UV peak
3
Monday, Nov 2. Cloudy. High 63°17°, low 51°11°. Typical 58°14° / 38°3°. Rain 0.14 in3.6 mm, 40% chance. Forecasts differ.
1. Morning
  6 AM–noon
  Cloudy, 54°12°
  30% chance · 0.01 in0.4 mm
2. Afternoon
  noon–6 PM
  Cloudy, 63°17°
  30% chance
3. Evening
  6 PM–midnight
  Cloudy, 53°12°
  30% chance · 0.02 in0.5 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.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
High, likely
50°10°–71°22°
Low, likely
38°3°–58°14°
Typical high / low
58°14° / 38°3°
Wind
11 mph17 km/h, gusts 20 mph32 km/h
UV peak
1

10 days15 days30 days

The outlook

Today
Dry, high 61°, low 35°.
Tomorrow
Dry, high 64°, low 37°, warming up.
Monday
Dry, high 68°, low 44°, warming up.
Rest of week
Mostly dry, highs 61–70°.

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

Swatara Creek at Harper Tavern

13 mi

Below flood stage

Level: 0.7 ft
Flow: 214 cfs

Forecast peak 0.7 ft Sat 2 PM

Reading from Sat 10:15 AM · NWS gauge page

Swatara Creek near Hershey

14 mi

Below flood stage

Level: 1.8 ft
Flow: 318 cfs

Forecast peak 1.8 ft Sat 2 PM

Reading from Sat 9:45 AM · NWS gauge page

Susquehanna River at Marietta

16 mi

Below flood stage

Level: 34.5 ft
Flow: 13,900 cfs

Forecast peak 34.4 ft Sat 2 PM

Reading from Sat 10:30 AM · NWS gauge page

Conestoga River at Lancaster

16 mi

Below flood stage

Level: 3.6 ft
Flow: 258 cfs

Forecast peak 3.6 ft Sat 2 PM

Reading from Sat 10:15 AM · 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 34Typical 105

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 19 hours are near freezing and damp, when outdoor units defrost more often.

Comfort

Dry air outside (dew point 43°F).

Open the windows?

Today, 3:00 PM–4:00 PM

Good stretch to open the windows.

Is this typical?

LEBANON 2 W · official normals 1991–2020 · records 1965–2026

Oct 24, today vs a typical year

Today’s expected high is about typical for the date.

Last 7 days vs normal

—SunOct 18
—MonOct 19
—TueOct 20
—WedOct 21
—ThuOct 22
—FriOct 23
—SatOct 24

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

Sun & moon

Sun

Daylight: 10 h 47 min; Losing 2 min 30 s a day; shortest Dec 21, 1 h 29 min less
Golden hour: 5:35–6:29 PM; Morning 7:09–8:03 AM
Blue hour: 6:29–6:40 PM; Morning 6:58–7:09 AM; first light 6:58 AM

Stars tonight? Fair

Clear 6:40 PM–6:59 AM, but the moon is 99% lit and up.

Moon

Waxing gibbous

97% lit · growing

Today: sets 5:37 AM · rises 5:09 PM
Full moon: Oct 26
New moon: Nov 9

Looking west from Cornwall. The highest point on the skyline is about 1,700 ft, 22 mi away.Skyline from USGS elevation data, heights drawn up to 6× taller. Sky, sun and moon as they are now.

Cornwall, PA weather

Next 2 hours

Next 48 hours

Days ahead

The outlook

Today

Tomorrow

Monday

Rest of week

What changed since yesterday

Radar

Rivers

Swatara Creek at Harper Tavern

Swatara Creek near Hershey

Susquehanna River at Marietta

Conestoga River at Lancaster

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