Freeze Watch
Starts in 11 h 49 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 11:50 AM EDT at KLNS

Lebanon South, PA weather

Sunny and 57°14°, jacket by 6 PM.

Forecasts agree

Now 57°14°

Sunny

Wind: 9 mph15 km/h; From the east-northeast. Up to 9 mph15 km/h through 12 AM
Dew point: 37°3°; Comfortable
UV index: 4Moderate; Moderate until 4 PM
Pressure: 30.37 inHg1028 hPa; Rising slowly · +0.01 inHg+0.5 hPa in 3 h

No precipitation expected in the next 2 hours.

From forecast models

Next 48 hours

Good hours for

High 60°16° today at 2 PM
Below 50°10° tonight after 8 PM
Low 33°1° tonight at 4 AM
Above 50°10° tomorrow by 11 AM
Drops 12°7° tomorrow night 6–9 PM (58°14° → 46°8°)

This afternoonUp to 60°16° by 2 PM · Clear
TonightDown to 33°1° by 4 AM · Partly cloudy
Tomorrow morningUp to 54°12° by 11 AM · Clear
Tomorrow afternoonUp to 61°16° by 3 PM · Clear
Tomorrow nightDown to 34°1° by 5 AM · Clear
Sunday morningUp to 55°13° by 11 AM · freezing, low 32°0° · 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	56°13° (likely 56°13° to 58°14°)	56°13°	0%	7 mph11 km/h from NE, gusts 14 mph22 km/h	49%	8%	4
Fri 1p	Sunny	58°14° (likely 58°14° to 59°15°)	58°14°	0%	7 mph11 km/h from NE, gusts 12 mph19 km/h	44%	6%	4
Fri 2p	Sunny	60°16° (likely 59°15° to 60°16°)	60°16°	0%	6 mph10 km/h from NE, gusts 11 mph17 km/h	39%	6%	4
Fri 3p	Sunny	60°16° (likely 59°15° to 60°16°)	60°16°	0%	5 mph8 km/h from NE, gusts 9 mph15 km/h	36%	6%	3
Fri 4p	Sunny	60°16° (likely 59°15° to 60°16°)	60°16°	0%	3 mph5 km/h from E, gusts 9 mph14 km/h	36%	6%	2
Fri 5p	Sunny	59°15° (likely 58°14° to 59°15°)	59°15°	0%	3 mph5 km/h from E, gusts 9 mph14 km/h	37%	19%	1
Fri 6p	Mostly clear	55°13° (likely 54°12° to 56°13°)	55°13°	0%	2 mph3 km/h from E, gusts 8 mph12 km/h	45%	51%	0
Fri 7p	Mostly clear	51°11° (likely 50°10° to 52°11°)	51°11°	0%	1 mph2 km/h from E, gusts 7 mph11 km/h	54%	53%	0
Fri 8p	Partly cloudy	47°8° (likely 47°8° to 49°9°)	47°8°	0%	1 mph2 km/h from E, gusts 6 mph10 km/h	65%	57%	0
Fri 9p	Partly cloudy	45°7° (likely 45°7° to 47°8°)	45°7°	0%	1 mph2 km/h from E, gusts 6 mph9 km/h	76%	63%	0
Fri 10p	Partly cloudy	42°6° (likely 42°6° to 46°8°)	42°6°	0%	1 mph2 km/h from E, gusts 5 mph9 km/h	86%	49%	0
Fri 11p	Clear	41°5° (likely 41°5° to 45°7°)	41°5°	0%	1 mph2 km/h from NE, gusts 5 mph8 km/h	85%	42%	0
Sat 12a	Clear	39°4° (likely 39°4° to 44°7°)	39°4°	0%	1 mph2 km/h from E, gusts 4 mph7 km/h	89%	41%	0
Sat 1a	Clear	36°2° (likely 36°2° to 43°6°)	36°2°	0%	1 mph2 km/h from E, gusts 4 mph7 km/h	100%	37%	0
Sat 2a	Clear	35°2° (likely 35°2° to 42°6°)	35°2°	0%	2 mph3 km/h from NE, gusts 4 mph7 km/h	100%	38%	0
Sat 3a	Clear	35°2° (likely 35°2° to 41°5°)	35°2°	0%	2 mph3 km/h from NE, gusts 4 mph6 km/h	100%	43%	0
Sat 4a	Mostly clear	33°1° (likely 33°1° to 40°4°)	33°1°	0%	2 mph3 km/h from NE, gusts 3 mph6 km/h	100%	33%	0
Sat 5a	Mostly clear	35°2° (likely 35°2° to 39°4°)	35°2°	0%	2 mph3 km/h from NE, gusts 4 mph6 km/h	96%	20%	0
Sat 6a	Mostly clear	35°2° (likely 35°2° to 39°4°)	35°2°	0%	1 mph2 km/h from NE, gusts 4 mph6 km/h	92%	12%	0
Sat 7a	Sunny	35°2° (likely 35°2° to 38°3°)	35°2°	0%	1 mph2 km/h from NE, gusts 4 mph6 km/h	92%	21%	0
Sat 8a	Sunny	36°2° (likely 35°2° to 38°3°)	36°2°	0%	1 mph2 km/h from NE, gusts 4 mph6 km/h	92%	18%	0
Sat 9a	Sunny	43°6° (likely 39°4° to 43°6°)	43°6°	0%	1 mph2 km/h from NE, gusts 5 mph7 km/h	82%	0%	1
Sat 10a	Sunny	49°9° (likely 47°8° to 49°9°)	49°9°	0%	0 mph0 km/h, gusts 4 mph7 km/h	68%	2%	2
Sat 11a	Sunny	54°12° (likely 52°11° to 54°12°)	54°12°	0%	0 mph0 km/h, gusts 7 mph11 km/h	59%	1%	3
Sat 12p	Sunny	56°13° (likely 56°13° to 57°14°)	56°13°	0%	0 mph0 km/h, gusts 6 mph10 km/h	55%	2%	4
Sat 1p	Sunny	59°15° (likely 57°14° to 59°15°)	59°15°	0%	1 mph2 km/h from SE, gusts 7 mph11 km/h	47%	2%	4
Sat 2p	Sunny	60°16° (likely 58°14° to 60°16°)	60°16°	0%	2 mph3 km/h from SE, gusts 6 mph10 km/h	44%	2%	4
Sat 3p	Sunny	61°16° (likely 59°15° to 61°16°)	61°16°	0%	1 mph2 km/h from S, gusts 5 mph8 km/h	41%	4%	3
Sat 4p	Sunny	61°16° (likely 59°15° to 61°16°)	61°16°	0%	2 mph3 km/h from S, gusts 6 mph9 km/h	41%	6%	2
Sat 5p	Sunny	60°16° (likely 57°14° to 60°16°)	60°16°	0%	2 mph3 km/h from SE, gusts 5 mph8 km/h	42%	2%	1
Sat 6p	Clear	58°14° (likely 53°12° to 58°14°)	58°14°	0%	1 mph2 km/h from SE, gusts 5 mph7 km/h	47%	0%	0
Sat 7p	Clear	54°12° (likely 50°10° to 54°12°)	54°12°	0%	1 mph2 km/h from SE, gusts 4 mph7 km/h	57%	0%	0
Sat 8p	Clear	46°8° (likely 46°8° to 50°10°)	46°8°	0%	1 mph2 km/h from SE, gusts 6 mph9 km/h	79%	0%	0
Sat 9p	Clear	44°7° (likely 44°7° to 48°9°)	44°7°	0%	0 mph0 km/h, gusts 6 mph10 km/h	82%	0%	0
Sat 10p	Clear	42°6° (likely 42°6° to 46°8°)	42°6°	0%	0 mph0 km/h, gusts 5 mph9 km/h	86%	0%	0
Sat 11p	Clear	40°4° (likely 40°4° to 45°7°)	40°4°	0%	0 mph0 km/h, gusts 5 mph7 km/h	92%	0%	0
Sun 12a	Clear	38°3° (likely 38°3° to 43°6°)	38°3°	0%	0 mph0 km/h, gusts 4 mph6 km/h	96%	0%	0
Sun 1a	Clear	37°3° (likely 37°3° to 42°6°)	37°3°	0%	0 mph0 km/h, gusts 3 mph5 km/h	100%	1%	0
Sun 2a	Clear	36°2° (likely 36°2° to 41°5°)	36°2°	0%	0 mph0 km/h, gusts 3 mph4 km/h	100%	0%	0
Sun 3a	Clear	35°2° (likely 34°1° to 40°4°)	35°2°	0%	0 mph0 km/h, gusts 2 mph4 km/h	100%	0%	0
Sun 4a	Clear	35°2° (likely 33°1° to 39°4°)	35°2°	0%	0 mph0 km/h, gusts 2 mph4 km/h	96%	0%	0
Sun 5a	Clear	34°1° (likely 32°0° to 38°3°)	34°1°	0%	0 mph0 km/h, gusts 3 mph4 km/h	100%	0%	0
Sun 6a	Clear	33°1° (likely 31°−1° to 38°3°)	33°1°	0%	0 mph0 km/h, gusts 3 mph5 km/h	100%	0%	0
Sun 7a	Sunny	32°0° (likely 31°−1° to 37°3°)	32°0°	0%	0 mph0 km/h, gusts 3 mph5 km/h	100%	0%	0
Sun 8a	Sunny	33°1° (likely 31°−1° to 38°3°)	33°1°	0%	0 mph0 km/h, gusts 2 mph4 km/h	100%	0%	0
Sun 9a	Sunny	39°4° (likely 33°1° to 45°7°)	39°4°	0%	0 mph0 km/h, gusts 1 mph2 km/h	92%	2%	1
Sun 10a	Sunny	48°9° (likely 41°5° to 49°9°)	48°9°	0%	0 mph0 km/h, gusts 3 mph5 km/h	74%	0%	2
Sun 11a	Sunny	55°13° (likely 49°9° to 55°13°)	55°13°	0%	0 mph0 km/h, gusts 4 mph7 km/h	61%	0%	3

Days ahead

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

Today, Oct 23. Sunny. High 61°16°, low 33°1°. Typical 62°17° / 41°5°. Dry. Forecasts agree.
1. Afternoon
  noon–6 PM
  Sunny, 60°16°
  Dry
2. Evening
  6 PM–midnight
  Partly cloudy, 47°8°
  Dry
3. Overnight
  midnight–6 AM
  Clear, 33°1°
  Dry
Official NWS forecast
Today: Sunny, with a high near 61. East wind 3 to 7 mph.
Tonight: Widespread frost after 1am. Mostly clear, with a low around 33. Northeast wind around 2 mph.
Forecasts agreeIndependent forecasts are close; the range is narrow.
High, likely
59°15°–61°16°
Low, likely
33°1°–44°7°
Typical high / low
62°17° / 41°5°
Wind
10 mph15 km/h, gusts 18 mph29 km/h
UV peak
4
Tomorrow, Oct 24. Mostly sunny. High 61°16°, low 32°0°. Typical 61°16° / 41°5°. 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, 46°8°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 34°1°
  Dry
Official NWS forecast
Day: Widespread frost before 9am. Sunny, with a high near 61. East wind around 2 mph.
Night: Areas of frost after 1am. Clear, with a low around 32. Southeast wind around 1 mph.
Forecasts agreeIndependent forecasts are close; the range is narrow.
High, likely
59°15°–61°16°
Low, likely
32°0°–38°3°
Typical high / low
61°16° / 41°5°
Wind
6 mph9 km/h, gusts 11 mph17 km/h
UV peak
4
Sunday, Oct 25. Sunny. High 64°18°, low 34°1°. Typical 61°16° / 41°5°. Dry. Forecasts agree.
1. Morning
  6 AM–noon
  Sunny, 33°1°
  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, 38°3°
  Dry
Official NWS forecast
Day: Areas of frost before 9am. Sunny, with a high near 64. West wind 0 to 3 mph.
Night: Clear, with a low around 34.
Forecasts agreeIndependent forecasts are close; the range is narrow.
High, likely
60°16°–64°18°
Low, likely
31°−1°–37°3°
Typical high / low
61°16° / 41°5°
Wind
6 mph9 km/h
UV peak
4
Monday, Oct 26. Sunny. High 69°21°, low 44°7°. Typical 60°16° / 40°4°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Sunny, 37°3°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 66°19°
  Dry
3. Evening
  6 PM–midnight
  Clear, 54°12°
  Dry
4. Overnight
  midnight–6 AM
  Cloudy, 47°8°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Sunny, with a high near 69.
Night: Mostly clear, with a low around 44.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
65°18°–69°21°
Low, likely
32°0°–44°7°
Typical high / low
60°16° / 40°4°
Wind
9 mph15 km/h, gusts 17 mph27 km/h
UV peak
4
Tuesday, Oct 27. Mostly sunny. High 65°18°, low 39°4°. Typical 60°16° / 40°4°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Sunny, 46°8°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 64°18°
  Dry
3. Evening
  6 PM–midnight
  Clear, 52°11°
  Dry
4. Overnight
  midnight–6 AM
  Cloudy, 42°6°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Sunny, with a high near 65.
Night: Mostly clear, with a low around 39.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
61°16°–66°19°
Low, likely
39°4°–48°9°
Typical high / low
60°16° / 40°4°
Wind
10 mph15 km/h, gusts 16 mph26 km/h
UV peak
4
Wednesday, Oct 28. Mostly cloudy. High 61°16°, low 41°5°. Typical 60°16° / 40°4°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Cloudy, 42°6°
  Dry
2. Afternoon
  noon–6 PM
  Cloudy, 59°15°
  Dry
3. Evening
  6 PM–midnight
  Cloudy, 53°11°
  Dry
4. Overnight
  midnight–6 AM
  Cloudy, 46°8°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Partly sunny, with a high near 61.
Night: Mostly cloudy, with a low around 41.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
58°14°–63°17°
Low, likely
37°3°–46°8°
Typical high / low
60°16° / 40°4°
Wind
10 mph16 km/h, gusts 16 mph26 km/h
UV peak
2
Thursday, Oct 29. Cloudy. High 66°19°, low 43°6°. Typical 59°15° / 39°4°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Cloudy, 45°7°
  Dry
2. Afternoon
  noon–6 PM
  Partly sunny, 65°18°
  Dry
3. Evening
  6 PM–midnight
  Mostly clear, 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: Partly sunny, with a high near 66.
Night: Partly cloudy, with a low around 43.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
63°17°–69°21°
Low, likely
40°4°–49°9°
Typical high / low
59°15° / 39°4°
Wind
11 mph17 km/h, gusts 25 mph40 km/h
UV peak
3
Friday, Oct 30. Cloudy. High 67°19°, low 47°8°. Typical 59°15° / 39°4°. Dry. Forecasts differ.
1. Morning
  6 AM–noon
  Sunny, 46°8°
  Dry
2. Afternoon
  noon–6 PM
  Mostly sunny, 66°19°
  Dry
3. Evening
  6 PM–midnight
  Clear, 54°12°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 47°8°
  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
61°16°–71°22°
Low, likely
43°6°–50°10°
Typical high / low
59°15° / 39°4°
Wind
8 mph13 km/h, gusts 20 mph32 km/h
UV peak
4
Saturday, Oct 31. Sunny. High 60°16°, low 44°7°. Typical 58°14° / 39°4°. Dry. Forecasts differ.
1. Morning
  6 AM–noon
  Sunny, 47°8°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 57°14°
  Dry
3. Evening
  6 PM–midnight
  Clear, 48°9°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 40°4°
  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
53°12°–67°19°
Low, likely
36°2°–53°12°
Typical high / low
58°14° / 39°4°
Wind
10 mph16 km/h, gusts 24 mph39 km/h
UV peak
2
Sunday, Nov 1. Showers. High 61°16°, low 46°8°. Typical 58°14° / 38°3°. Rain 0.53 in13 mm, 30% chance. Forecasts differ.
1. Morning
  6 AM–noon
  Sunny, 39°4°
  Dry
2. Afternoon
  noon–6 PM
  Rain, 56°13°
  20% chance · 0.17 in4.3 mm
3. Evening
  6 PM–midnight
  Showers, 51°10°
  30% chance · 0.23 in5.8 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
35°2°–54°12°
Typical high / low
58°14° / 38°3°
Wind
12 mph19 km/h, gusts 26 mph41 km/h

10 days15 days30 days

The outlook

Today
Dry, high 61°, low 33°.
Tomorrow
Dry, high 61°, low 32°.
Sunday
Dry, high 64°, low 34°, warming up.
Rest of week
Mostly dry, highs 60–69°.

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

10 mi

Below flood stage

Level: 0.8 ft
Flow: 232 cfs

Forecast peak 0.7 ft Fri 2 PM

Reading from Fri 10:15 AM · NWS gauge page

Swatara Creek near Hershey

14 mi

Below flood stage

Level: 1.9 ft
Flow: 341 cfs

Forecast peak 1.9 ft Fri 2 PM

Reading from Fri 9:45 AM · NWS gauge page

Swatara Creek at Middletown

19 mi

Below flood stage

Level: 2.3 ft

Forecast peak 2.3 ft Fri 2 PM

Reading from Fri 10:15 AM · NWS gauge page

Quittapahilla Creek near Bellegrove

8.2 mi

Level: 3.4 ft
Flow: 76 cfs

Reading from Fri 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 63% less heating than a typical week.

This week 38Typical 103

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

Comfort

Dry air outside (dew point 37°F).

Open the windows?

Today, 2:00 PM–4:00 PM

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

Is this typical?

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

Oct 23, today vs a typical year

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

Last 7 days vs normal

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

Lebanon South weather by month: normals, records, snow and freeze dates

Sun & moon

Sun

Daylight: 10 h 49 min; Losing 2 min 30 s a day; shortest Dec 21, 1 h 31 min less
Golden hour: 5:36–6:31 PM; Morning 7:08–8:02 AM
Blue hour: 6:31–6:41 PM; Morning 6:57–7:08 AM; first light 6:57 AM

Stars tonight? Fair

Mostly clear 5–6:58 AM, but the moon is 95% lit and up.

Moon

Waxing gibbous

92% lit · growing

Today: sets 4:29 AM · rises 4:45 PM
Full moon: Oct 26
New moon: Nov 9

Looking north from Lebanon South. The highest point on the skyline is about 1,700 ft, 15 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

Lebanon South, PA weather

Next 2 hours

Next 48 hours

Days ahead

The outlook

Today

Tomorrow

Sunday

Rest of week

What changed since yesterday

Radar

Rivers

Swatara Creek at Harper Tavern

Swatara Creek near Hershey

Swatara Creek at Middletown

Quittapahilla Creek near Bellegrove

For your home

Heating this week

Heat-pump hours, next 7 days

Comfort

Open the windows?

Is this typical?

Oct 23, today vs a typical year

Last 7 days vs normal

Sun & moon

Sun

Stars tonight? Fair

Moon