Freeze Watch
Starts in 11 h 25 min
When
From late tonight through Saturday morning.
Where
Lancaster and Lebanon Counties.
Issued for this forecast zone · National Weather Service State College PA
What, impacts and precautionsHide details
What
Sub-freezing temperatures as low as 30 possible.
Impacts
Frost and freeze conditions could kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing.
Precautionary actions
Those with agricultural interests should protect sensitive vegetation.
Areas: Lebanon; Lancaster
See it on weather.gov (opens in a new tab)

Observed 11:15 AM EDT at KMQS

Little Britain, PA weather

Hazy and 55°13°, jacket by 6 PM.

Forecasts agree

Now 55°13°

Haze

Wind: 10 mph17 km/h; From the east-northeast. Up to 10 mph17 km/h through 12 AM
Dew point: 36°2°; Comfortable
UV index: 4Moderate; Moderate until 5 PM
Air quality: 40Good; PM2.5 (fine particles) · tomorrow moderate
Pressure: 30.35 inHg1028 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 2 PM
Below 50°10° tonight after 8 PM
Low 35°2° tomorrow at 7 AM
Above 50°10° tomorrow by 10 AM
Drops 12°7° tomorrow night 6–9 PM (57°14° → 45°7°)

This afternoonUp to 61°16° by 2 PM · Clear
TonightDown to 37°3° by 5 AM · Partly cloudy
Tomorrow morningUp to 55°13° by 11 AM · Clear
Tomorrow afternoonUp to 61°16° by 3 PM · Clear
Tomorrow nightDown to 36°2° by 5 AM · Clear
Sunday morningUp to 55°13° by 11 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
Fri 12p	Sunny	57°14° (likely 57°14° to 58°14°)	57°14°	0%	8 mph13 km/h from NE, gusts 16 mph25 km/h	47%	0%	4
Fri 1p	Sunny	59°15° (likely 58°14° to 59°15°)	59°15°	0%	7 mph11 km/h from NE, gusts 14 mph23 km/h	42%	1%	4
Fri 2p	Sunny	61°16° (likely 59°15° to 61°16°)	61°16°	0%	6 mph10 km/h from NE, gusts 12 mph20 km/h	38%	1%	4
Fri 3p	Sunny	60°16° (likely 60°16° to 61°16°)	60°16°	0%	5 mph8 km/h from NE, gusts 12 mph19 km/h	36%	3%	4
Fri 4p	Sunny	60°16° (likely 59°15° to 60°16°)	60°16°	0%	5 mph8 km/h from NE, gusts 10 mph17 km/h	35%	4%	3
Fri 5p	Sunny	59°15° (likely 58°14° to 59°15°)	59°15°	0%	5 mph8 km/h from NE, gusts 9 mph15 km/h	36%	5%	1
Fri 6p	Clear	55°13° (likely 54°12° to 56°13°)	55°13°	0%	3 mph5 km/h from NE, gusts 8 mph13 km/h	43%	3%	0
Fri 7p	Mostly clear	51°11° (likely 50°10° to 51°11°)	51°11°	0%	2 mph3 km/h from NE, gusts 6 mph10 km/h	52%	14%	0
Fri 8p	Clear	47°8° (likely 47°8° to 48°9°)	47°8°	0%	1 mph2 km/h from NE, gusts 6 mph10 km/h	63%	34%	0
Fri 9p	Mostly clear	44°7° (likely 44°7° to 47°8°)	44°7°	0%	1 mph2 km/h from NE, gusts 6 mph9 km/h	76%	44%	0
Fri 10p	Mostly clear	42°6° (likely 42°6° to 46°8°)	42°6°	0%	1 mph2 km/h from E, gusts 7 mph12 km/h	82%	58%	0
Fri 11p	Mostly clear	42°6° (likely 41°5° to 45°7°)	42°6°	0%	1 mph2 km/h from E, gusts 8 mph13 km/h	82%	70%	0
Sat 12a	Partly cloudy	40°4° (likely 40°4° to 44°7°)	40°4°	0%	0 mph0 km/h, gusts 6 mph9 km/h	85%	66%	0
Sat 1a	Partly cloudy	39°4° (likely 39°4° to 43°6°)	39°4°	0%	0 mph0 km/h, gusts 4 mph6 km/h	92%	46%	0
Sat 2a	Clear	39°4° (likely 39°4° to 42°6°)	39°4°	0%	0 mph0 km/h, gusts 3 mph5 km/h	92%	42%	0
Sat 3a	Clear	39°4° (likely 39°4° to 41°5°)	39°4°	0%	0 mph0 km/h, gusts 3 mph5 km/h	89%	35%	0
Sat 4a	Mostly clear	38°3° (likely 38°3° to 40°4°)	38°3°	0%	1 mph2 km/h from N, gusts 4 mph6 km/h	92%	34%	0
Sat 5a	Clear	37°3° (likely 37°3° to 39°4°)	37°3°	0%	2 mph3 km/h from N, gusts 4 mph6 km/h	92%	21%	0
Sat 6a	Clear	36°2° (likely 36°2° to 38°3°)	36°2°	0%	2 mph3 km/h from N, gusts 5 mph8 km/h	96%	18%	0
Sat 7a	Sunny	35°2° (likely 35°2° to 38°3°)	35°2°	0%	1 mph2 km/h from N, gusts 6 mph9 km/h	96%	12%	0
Sat 8a	Sunny	36°2° (likely 36°2° to 39°4°)	36°2°	0%	2 mph3 km/h from N, gusts 6 mph10 km/h	92%	13%	0
Sat 9a	Sunny	42°6° (likely 41°5° to 44°7°)	42°6°	0%	2 mph3 km/h from NE, gusts 7 mph11 km/h	82%	14%	1
Sat 10a	Sunny	50°10° (likely 50°10° to 52°11°)	50°10°	0%	1 mph2 km/h from NE, gusts 6 mph9 km/h	66%	6%	2
Sat 11a	Sunny	55°13° (likely 54°12° to 57°14°)	55°13°	0%	1 mph2 km/h from E, gusts 9 mph14 km/h	53%	4%	3
Sat 12p	Sunny	57°14° (likely 56°13° to 58°14°)	57°14°	0%	2 mph3 km/h from E, gusts 7 mph11 km/h	47%	4%	4
Sat 1p	Sunny	59°15° (likely 57°14° to 60°16°)	59°15°	0%	2 mph3 km/h from E, gusts 6 mph10 km/h	44%	4%	4
Sat 2p	Sunny	60°16° (likely 58°14° to 60°16°)	60°16°	0%	2 mph3 km/h from E, gusts 6 mph9 km/h	42%	1%	4
Sat 3p	Sunny	61°16° (likely 58°14° to 61°16°)	61°16°	0%	1 mph2 km/h from E, gusts 6 mph9 km/h	39%	0%	4
Sat 4p	Sunny	61°16° (likely 58°14° to 61°16°)	61°16°	0%	1 mph2 km/h from E, gusts 6 mph9 km/h	41%	1%	2
Sat 5p	Sunny	60°16° (likely 57°14° to 60°16°)	60°16°	0%	0 mph0 km/h, gusts 5 mph8 km/h	41%	0%	1
Sat 6p	Clear	57°14° (likely 53°12° to 57°14°)	57°14°	0%	0 mph0 km/h, gusts 6 mph9 km/h	51%	0%	0
Sat 7p	Clear	52°11° (likely 50°10° to 52°11°)	52°11°	0%	0 mph0 km/h, gusts 4 mph7 km/h	61%	0%	0
Sat 8p	Clear	45°7° (likely 45°7° to 49°9°)	45°7°	0%	0 mph0 km/h, gusts 3 mph4 km/h	79%	1%	0
Sat 9p	Clear	43°6° (likely 43°6° to 48°9°)	43°6°	0%	0 mph0 km/h, gusts 4 mph7 km/h	86%	3%	0
Sat 10p	Clear	41°5° (likely 41°5° to 46°8°)	41°5°	0%	0 mph0 km/h, gusts 5 mph7 km/h	92%	8%	0
Sat 11p	Clear	40°4° (likely 40°4° to 46°8°)	40°4°	0%	0 mph0 km/h, gusts 5 mph8 km/h	96%	1%	0
Sun 12a	Clear	39°4° (likely 39°4° to 44°7°)	39°4°	0%	0 mph0 km/h, gusts 3 mph5 km/h	100%	0%	0
Sun 1a	Clear	39°4° (likely 39°4° to 44°7°)	39°4°	0%	0 mph0 km/h, gusts 4 mph6 km/h	96%	0%	0
Sun 2a	Clear	39°4° (likely 39°4° to 43°6°)	39°4°	0%	0 mph0 km/h, gusts 4 mph6 km/h	96%	0%	0
Sun 3a	Clear	38°3° (likely 37°3° to 41°5°)	38°3°	0%	0 mph0 km/h, gusts 5 mph7 km/h	100%	0%	0
Sun 4a	Clear	37°3° (likely 36°2° to 40°4°)	37°3°	0%	1 mph2 km/h from NW, gusts 4 mph6 km/h	100%	1%	0
Sun 5a	Clear	36°2° (likely 35°2° to 39°4°)	36°2°	0%	1 mph2 km/h from NW, gusts 4 mph6 km/h	100%	2%	0
Sun 6a	Clear	35°2° (likely 34°1° to 39°4°)	35°2°	0%	1 mph2 km/h from NW, gusts 4 mph7 km/h	100%	6%	0
Sun 7a	Sunny	34°1° (likely 34°1° to 39°4°)	34°1°	0%	2 mph3 km/h from N, gusts 5 mph7 km/h	100%	2%	0
Sun 8a	Sunny	35°2° (likely 33°1° to 40°4°)	35°2°	0%	2 mph3 km/h from N, gusts 5 mph8 km/h	100%	3%	0
Sun 9a	Sunny	40°4° (likely 39°4° to 47°8°)	40°4°	0%	2 mph3 km/h from NW, gusts 5 mph7 km/h	92%	1%	1
Sun 10a	Sunny	48°9° (likely 48°9° to 52°11°)	48°9°	0%	2 mph3 km/h from NW, gusts 5 mph7 km/h	74%	0%	2
Sun 11a	Sunny	55°13° (likely 55°13° to 57°14°)	55°13°	0%	2 mph3 km/h from NW, gusts 5 mph8 km/h	59%	0%	3

Days ahead

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

Today, Oct 23. Sunny. High 62°17°, low 34°1°. Typical 64°18° / 45°7°. Dry. Forecasts agree.
1. Afternoon
  noon–6 PM
  Sunny, 61°16°
  Dry
2. Evening
  6 PM–midnight
  Mostly clear, 47°8°
  Dry
3. Overnight
  midnight–6 AM
  Clear, 37°3°
  Dry
Official NWS forecast
Today: Sunny, with a high near 62. Northeast wind 5 to 8 mph.
Tonight: Areas of frost after 2am. Mostly clear, with a low around 34. Northeast wind 0 to 3 mph.
Forecasts agreeIndependent forecasts are close; the range is narrow.
High, likely
60°16°–62°17°
Low, likely
34°1°–44°7°
Typical high / low
64°18° / 45°7°
Wind
12 mph19 km/h, gusts 24 mph39 km/h
UV peak
4
Tomorrow, Oct 24. Mostly sunny. High 61°16°, low 34°1°. Typical 64°18° / 44°7°. Dry. Forecasts agree.
1. Morning
  6 AM–noon
  Sunny, 36°2°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 61°16°
  Dry
3. Evening
  6 PM–midnight
  Clear, 45°7°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 36°2°
  Dry
Official NWS forecast
Day: Areas of frost before 9am. Sunny, with a high near 61. East wind around 2 mph.
Night: Clear, with a low around 34. North wind around 1 mph.
Forecasts agreeIndependent forecasts are close; the range is narrow.
High, likely
58°14°–61°16°
Low, likely
34°1°–38°3°
Typical high / low
64°18° / 44°7°
Wind
7 mph11 km/h
UV peak
4
Sunday, Oct 25. Sunny. High 64°18°, low 36°2°. Typical 63°17° / 44°7°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Sunny, 35°2°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 63°17°
  Dry
3. Evening
  6 PM–midnight
  Clear, 48°9°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 41°5°
  Dry
Official NWS forecast
Day: Patchy frost and patchy fog between 7am and 8am. Sunny, with a high near 64. Northwest wind around 2 mph.
Night: Clear, with a low around 36.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
62°17°–64°18°
Low, likely
33°1°–39°4°
Typical high / low
63°17° / 44°7°
Wind
6 mph9 km/h
UV peak
4
Monday, Oct 26. Sunny. High 67°19°, low 45°7°. Typical 63°17° / 43°6°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Sunny, 39°4°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 66°19°
  Dry
3. Evening
  6 PM–midnight
  Clear, 53°12°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 49°9°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Sunny, with a high near 67.
Night: Clear, with a low around 45.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
64°18°–68°20°
Low, likely
35°2°–45°7°
Typical high / low
63°17° / 43°6°
Wind
9 mph15 km/h, gusts 17 mph27 km/h
UV peak
4
Tuesday, Oct 27. Mostly sunny. High 64°18°, low 41°5°. Typical 62°17° / 43°6°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Sunny, 49°9°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 65°18°
  Dry
3. Evening
  6 PM–midnight
  Clear, 54°12°
  Dry
4. Overnight
  midnight–6 AM
  Mostly clear, 43°6°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Sunny, with a high near 64.
Night: Mostly clear, with a low around 41.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
63°17°–66°19°
Low, likely
41°5°–49°9°
Typical high / low
62°17° / 43°6°
Wind
11 mph18 km/h, gusts 22 mph36 km/h
UV peak
4
Wednesday, Oct 28. Cloudy. High 61°16°, low 42°6°. Typical 62°17° / 42°6°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Cloudy, 43°6°
  Dry
2. Afternoon
  noon–6 PM
  Cloudy, 60°16°
  Dry
3. Evening
  6 PM–midnight
  Cloudy, 52°11°
  Dry
4. Overnight
  midnight–6 AM
  Mostly clear, 47°8°
  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 42.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
59°15°–63°17°
Low, likely
39°4°–47°8°
Typical high / low
62°17° / 42°6°
Wind
8 mph13 km/h, gusts 16 mph26 km/h
UV peak
2
Thursday, Oct 29. Partly sunny. High 65°18°, low 45°7°. Typical 62°17° / 42°6°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Cloudy, 47°8°
  Dry
2. Afternoon
  noon–6 PM
  Partly sunny, 65°18°
  Dry
3. Evening
  6 PM–midnight
  Clear, 54°12°
  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 65.
Night: Partly cloudy, with a low around 45.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
63°17°–68°20°
Low, likely
42°6°–50°10°
Typical high / low
62°17° / 42°6°
Wind
12 mph19 km/h, gusts 28 mph45 km/h
UV peak
4
Friday, Oct 30. Cloudy. High 67°19°, low 50°10°. Typical 61°16° / 42°6°. Dry. Forecasts differ.
1. Morning
  6 AM–noon
  Sunny, 49°10°
  Dry
2. Afternoon
  noon–6 PM
  Mostly sunny, 66°19°
  Dry
3. Evening
  6 PM–midnight
  Cloudy, 54°12°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 48°9°
  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
63°17°–71°22°
Low, likely
46°8°–52°11°
Typical high / low
61°16° / 42°6°
Wind
10 mph16 km/h, gusts 21 mph33 km/h
UV peak
4
Saturday, Oct 31. Sunny. High 60°16°, low 46°8°. Typical 61°16° / 41°5°. Dry. Forecasts differ.
1. Morning
  6 AM–noon
  Sunny, 47°8°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 58°15°
  Dry
3. Evening
  6 PM–midnight
  Clear, 48°9°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 42°6°
  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
55°13°–67°19°
Low, likely
39°4°–53°12°
Typical high / low
61°16° / 41°5°
Wind
12 mph20 km/h, gusts 25 mph41 km/h
UV peak
2
Sunday, Nov 1. Showers. High 62°17°, low 48°9°. Typical 60°16° / 41°5°. Rain 0.54 in14 mm, 30% chance. Forecasts differ.
1. Morning
  6 AM–noon
  Drizzle, 42°5°
  Dry
2. Afternoon
  noon–6 PM
  Rain, 58°14°
  Dry
3. Evening
  6 PM–midnight
  Showers, 51°11°
  30% chance · 0.28 in7 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
58°14°–66°19°
Low, likely
36°2°–55°13°
Typical high / low
60°16° / 41°5°
Wind
12 mph20 km/h, gusts 28 mph45 km/h

10 days15 days30 days

The outlook

Today
Dry, high 62°, low 34°.
Tomorrow
Dry, high 61°, low 34°.
Sunday
Dry, high 64°, low 36°, warming up.
Rest of week
Mostly dry, highs 60–67°.

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

Chesapeake Bay at Havre de Grace (IN MLLW)

17 mi

Below flood stage

Level: 2.6 ft

Forecast peak 4.1 ft Sat 9 PM, minor flooding

Reading from Fri 10 AM · NWS gauge page

Octoraro Creek near Richardsmere

5.0 mi

Level: 2.8 ft
Flow: 96 cfs

Reading from Fri 10:45 AM · NWS gauge page

Susquehanna River at Conowingo Dam

9.1 mi

Below flood stage

Level: 10.8 ft
Flow: 12,800 cfs

Reading from Fri 10:35 AM · NWS gauge page

Muddy Creek (PA) near Castle Fin

11 mi

Level: 3.1 ft
Flow: 63 cfs

Reading from Fri 10:30 AM · NWS gauge page

For your home

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

Heating this week

About 56% less heating than a typical week.

This week 37Typical 84

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

Comfort

Dry air outside (dew point 36°F).

Open the windows?

Today, 2:00 PM–4:00 PM

Good stretch to open the windows.

Is this typical?

Conowingo Dam · official normals 1991–2020 · records 1936–2026

Oct 23, today vs a typical year

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

Last 7 days vs normal

—SatOct 17
—SunOct 18
—MonOct 19
—TueOct 20
—WedOct 21
—ThuOct 22
—FriOct 23

Little Britain weather by month: normals, records, snow and freeze dates

Sun & moon

Sun

Daylight: 10 h 50 min; Losing 2 min 30 s a day; shortest Dec 21, 1 h 29 min less
Golden hour: 5:36–6:30 PM; Morning 7:06–8:00 AM
Blue hour: 6:30–6:41 PM; Morning 6:55–7:06 AM; first light 6:55 AM

Stars tonight? Fair

Mostly clear 6:41–8 PM, but the moon is 95% lit and up.

Moon

Waxing gibbous

92% lit · growing

Today: sets 4:28 AM · rises 4:44 PM
Full moon: Oct 26
New moon: Nov 9

Looking southwest from Little Britain. The highest point on the skyline is about 4,900 ft, 8 mi away.Skyline from USGS elevation data, heights drawn up to 6× taller. Sky, sun and moon as they are now.

1 active weather alert

Freeze Watch