Freeze Warning
Ends in 6 h 14 min
When
Until 9 AM EDT Saturday.
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
Freezing conditions could kill crops and other sensitive vegetation.
Precautionary actions
Take steps to protect tender plants and vegetation from the cold if you wish to extend the growing season.
Areas: Lebanon; Lancaster
See it on weather.gov (opens in a new tab)

Observed 2:20 AM EDT at KLNS

Christiana, PA weather

Freeze Warning. 37°3° and clear now.

Forecasts agree

Now 37°3°

Clear

Wind: Calm; Light through 2 PM
Dew point: 36°2°; Comfortable
Humidity: 93%; Air 37°3°, dew point 36°2° · fog or dew likely
UV index: 0Low; Moderate 11 AM–4 PM · peak 4
Pressure: 30.48 inHg1032 hPa; Steady over the last 3 h

No precipitation expected in the next 2 hours.

From forecast models

Next 48 hours

13°7° cooler than this time yesterday (52°11° then, 39°4° now)

Good hours for

Low 36°2° today at 7 AM
Above 50°10° today by 10 AM
High 61°16° today at 4 PM
Below 50°10° tonight after 8 PM

TonightNear 39°4° · Clear
This morningUp to 54°12° by 11 AM · Clear
This afternoonUp to 61°16° by 4 PM · Clear
TonightDown to 38°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 43°6° by midnight · 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 2a	Clear	40°4° (likely 39°4° to 42°6°)	40°4°	0%	0 mph0 km/h, gusts 3 mph5 km/h	92%	2%	0
Sat 3a	Clear	39°4° (likely 39°4° to 42°6°)	39°4°	0%	0 mph0 km/h, gusts 3 mph4 km/h	92%	5%	0
Sat 4a	Clear	39°4° (likely 39°4° to 41°5°)	39°4°	0%	0 mph0 km/h, gusts 2 mph4 km/h	85%	10%	0
Sat 5a	Clear	38°3° (likely 37°3° to 41°5°)	38°3°	0%	0 mph0 km/h, gusts 2 mph4 km/h	85%	13%	0
Sat 6a	Clear	37°3° (likely 37°3° to 40°4°)	37°3°	0%	0 mph0 km/h, gusts 3 mph5 km/h	89%	28%	0
Sat 7a	Sunny	36°2° (likely 36°2° to 39°4°)	36°2°	0%	0 mph0 km/h, gusts 3 mph5 km/h	89%	23%	0
Sat 8a	Sunny	37°3° (likely 37°3° to 40°4°)	37°3°	0%	0 mph0 km/h, gusts 4 mph6 km/h	89%	20%	0
Sat 9a	Sunny	42°6° (likely 41°5° to 44°7°)	42°6°	0%	0 mph0 km/h, gusts 4 mph6 km/h	82%	9%	1
Sat 10a	Sunny	50°10° (likely 49°9° to 51°11°)	50°10°	0%	0 mph0 km/h, gusts 4 mph6 km/h	63%	12%	2
Sat 11a	Sunny	54°12° (likely 53°12° to 56°13°)	54°12°	0%	0 mph0 km/h, gusts 5 mph7 km/h	55%	0%	3
Sat 12p	Sunny	56°13° (likely 56°13° to 58°14°)	56°13°	0%	0 mph0 km/h, gusts 5 mph8 km/h	49%	0%	4
Sat 1p	Sunny	58°14° (likely 58°14° to 60°16°)	58°14°	0%	0 mph0 km/h, gusts 4 mph7 km/h	45%	0%	4
Sat 2p	Sunny	59°15° (likely 58°14° to 60°16°)	59°15°	0%	0 mph0 km/h, gusts 4 mph6 km/h	42%	0%	4
Sat 3p	Sunny	60°16° (likely 59°15° to 61°16°)	60°16°	0%	0 mph0 km/h, gusts 3 mph5 km/h	41%	0%	3
Sat 4p	Sunny	61°16° (likely 59°15° to 61°16°)	61°16°	0%	0 mph0 km/h, gusts 3 mph5 km/h	39%	0%	2
Sat 5p	Sunny	60°16° (likely 58°14° to 60°16°)	60°16°	0%	0 mph0 km/h, gusts 3 mph5 km/h	41%	0%	1
Sat 6p	Clear	57°14° (likely 53°12° to 57°14°)	57°14°	0%	0 mph0 km/h, gusts 3 mph6 km/h	47%	0%	0
Sat 7p	Clear	52°11° (likely 49°9° to 53°12°)	52°11°	0%	0 mph0 km/h, gusts 4 mph6 km/h	59%	0%	0
Sat 8p	Clear	48°9° (likely 48°9° to 50°10°)	48°9°	0%	0 mph0 km/h, gusts 4 mph7 km/h	71%	0%	0
Sat 9p	Clear	45°7° (likely 45°7° to 48°9°)	45°7°	0%	0 mph0 km/h, gusts 5 mph7 km/h	76%	0%	0
Sat 10p	Clear	44°7° (likely 44°7° to 47°8°)	44°7°	0%	0 mph0 km/h, gusts 4 mph7 km/h	79%	0%	0
Sat 11p	Clear	43°6° (likely 43°6° to 46°8°)	43°6°	0%	0 mph0 km/h, gusts 4 mph7 km/h	82%	0%	0
Sun 12a	Clear	42°6° (likely 42°6° to 45°7°)	42°6°	0%	0 mph0 km/h, gusts 4 mph7 km/h	82%	0%	0
Sun 1a	Clear	41°5° (likely 41°5° to 45°7°)	41°5°	0%	0 mph0 km/h, gusts 4 mph6 km/h	86%	0%	0
Sun 2a	Clear	41°5° (likely 41°5° to 44°7°)	41°5°	0%	0 mph0 km/h, gusts 4 mph6 km/h	86%	0%	0
Sun 3a	Clear	40°4° (likely 40°4° to 43°6°)	40°4°	0%	0 mph0 km/h, gusts 3 mph6 km/h	85%	0%	0
Sun 4a	Clear	40°4° (likely 40°4° to 42°6°)	40°4°	0%	0 mph0 km/h, gusts 2 mph4 km/h	85%	0%	0
Sun 5a	Clear	38°3° (likely 38°3° to 41°5°)	38°3°	0%	0 mph0 km/h, gusts 3 mph4 km/h	89%	0%	0
Sun 6a	Clear	38°3° (likely 37°3° to 41°5°)	38°3°	0%	0 mph0 km/h, gusts 2 mph3 km/h	89%	0%	0
Sun 7a	Sunny	37°3° (likely 37°3° to 40°4°)	37°3°	0%	0 mph0 km/h, gusts 2 mph4 km/h	89%	0%	0
Sun 8a	Sunny	36°2° (likely 36°2° to 41°5°)	36°2°	0%	0 mph0 km/h, gusts 3 mph4 km/h	96%	1%	0
Sun 9a	Sunny	43°6° (likely 41°5° to 45°7°)	43°6°	0%	0 mph0 km/h, gusts 3 mph4 km/h	82%	1%	1
Sun 10a	Sunny	51°11° (likely 51°11° to 52°11°)	51°11°	0%	0 mph0 km/h, gusts 3 mph5 km/h	68%	3%	2
Sun 11a	Sunny	55°13° (likely 55°13° to 57°14°)	55°13°	0%	0 mph0 km/h, gusts 6 mph10 km/h	59%	4%	3
Sun 12p	Sunny	58°14° (likely 58°14° to 60°16°)	58°14°	0%	0 mph0 km/h, gusts 6 mph10 km/h	53%	4%	4
Sun 1p	Sunny	61°16° (likely 60°16° to 61°16°)	61°16°	0%	0 mph0 km/h, gusts 6 mph9 km/h	48%	3%	4
Sun 2p	Sunny	62°17° (likely 61°16° to 63°17°)	62°17°	0%	5 mph8 km/h from W, gusts 7 mph11 km/h	44%	5%	4
Sun 3p	Sunny	63°17° (likely 61°16° to 63°17°)	63°17°	0%	0 mph0 km/h, gusts 6 mph10 km/h	43%	6%	3
Sun 4p	Sunny	64°18° (likely 61°16° to 64°18°)	64°18°	0%	0 mph0 km/h, gusts 5 mph9 km/h	41%	7%	2
Sun 5p	Sunny	62°17° (likely 60°16° to 62°17°)	62°17°	0%	0 mph0 km/h, gusts 4 mph6 km/h	46%	2%	1
Sun 6p	Clear	59°15° (likely 55°13° to 59°15°)	59°15°	0%	0 mph0 km/h, gusts 4 mph6 km/h	51%	0%	0
Sun 7p	Clear	54°12° (likely 51°11° to 55°13°)	54°12°	0%	0 mph0 km/h, gusts 4 mph6 km/h	64%	0%	0
Sun 8p	Clear	49°9° (likely 48°9° to 53°12°)	49°9°	0%	0 mph0 km/h, gusts 4 mph6 km/h	80%	0%	0
Sun 9p	Clear	47°8° (likely 45°7° to 51°11°)	47°8°	0%	0 mph0 km/h, gusts 2 mph4 km/h	83%	0%	0
Sun 10p	Clear	45°7° (likely 43°6° to 49°9°)	45°7°	0%	0 mph0 km/h, gusts 3 mph5 km/h	89%	0%	0
Sun 11p	Clear	44°7° (likely 41°5° to 48°9°)	44°7°	0%	0 mph0 km/h, gusts 3 mph5 km/h	93%	0%	0
Mon 12a	Clear	43°6° (likely 40°4° to 46°8°)	43°6°	0%	0 mph0 km/h, gusts 3 mph5 km/h	96%	0%	0
Mon 1a	Clear	43°6° (likely 39°4° to 45°7°)	43°6°	0%	0 mph0 km/h, gusts 3 mph5 km/h	93%	0%	0

Days ahead

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

Today, Oct 24. Sunny. High 61°16°, low 36°2°. Typical 62°17° / 40°4°. Dry. Forecasts agree.
1. Morning
  6 AM–noon
  Sunny, 37°3°
  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
Today: Widespread frost before 7am, then widespread frost and patchy fog between 7am and 9am. Sunny, with a high near 61. East wind around 0 mph.
Tonight: Widespread frost. Mostly clear, with a low around 36. North wind around 0 mph.
Forecasts agreeIndependent forecasts are close; the range is narrow.
High, likely
59°15°–61°16°
Low, likely
36°2°–39°4°
Typical high / low
62°17° / 40°4°
Wind
5 mph9 km/h
UV peak
4
Tomorrow, Oct 25. Sunny. High 64°18°, low 36°2°. Typical 61°16° / 40°4°. Dry. Forecasts agree.
1. Morning
  6 AM–noon
  Sunny, 36°2°
  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: Areas of fog and patchy frost before 9am. Sunny, with a high near 64. Northwest wind 0 to 5 mph.
Night: Patchy fog between midnight and 4am. Clear, with a low around 36. Northwest wind around 0 mph.
Forecasts agreeIndependent forecasts are close; the range is narrow.
High, likely
61°16°–64°18°
Low, likely
36°2°–40°4°
Typical high / low
61°16° / 40°4°
Wind
5 mph9 km/h, gusts 11 mph18 km/h
UV peak
4
Monday, Oct 26. Sunny. High 66°19°, low 45°7°. Typical 61°16° / 40°4°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Sunny, 39°4°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 65°18°
  Dry
3. Evening
  6 PM–midnight
  Clear, 54°12°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 48°9°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Sunny, with a high near 66.
Night: Mostly clear, with a low around 45.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
64°18°–67°19°
Low, likely
36°2°–45°7°
Typical high / low
61°16° / 40°4°
Wind
9 mph15 km/h, gusts 17 mph27 km/h
UV peak
4
Tuesday, Oct 27. Mostly sunny. High 63°17°, low 40°4°. Typical 61°16° / 39°4°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Sunny, 47°8°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 63°17°
  Dry
3. Evening
  6 PM–midnight
  Clear, 50°10°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 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 40.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
60°16°–65°18°
Low, likely
40°4°–48°9°
Typical high / low
61°16° / 39°4°
Wind
11 mph17 km/h, gusts 24 mph38 km/h
UV peak
4
Wednesday, Oct 28. Partly sunny. High 61°16°, low 43°6°. Typical 60°16° / 39°4°. Dry. Forecasts differ.
1. Morning
  6 AM–noon
  Sunny, 40°4°
  Dry
2. Afternoon
  noon–6 PM
  Cloudy, 60°15°
  Dry
3. Evening
  6 PM–midnight
  Cloudy, 51°10°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 44°7°
  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.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
High, likely
57°14°–62°17°
Low, likely
38°3°–43°6°
Typical high / low
60°16° / 39°4°
Wind
7 mph12 km/h, gusts 17 mph28 km/h
UV peak
4
Thursday, Oct 29. Partly sunny. High 67°19°, low 48°9°. Typical 60°16° / 38°3°. Dry. Forecasts differ.
1. Morning
  6 AM–noon
  Sunny, 44°7°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 64°18°
  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.
Official NWS forecast
Day: Mostly sunny, with a high near 67.
Night: Mostly clear, with a low around 48.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
High, likely
61°16°–67°19°
Low, likely
42°6°–48°9°
Typical high / low
60°16° / 38°3°
Wind
10 mph16 km/h, gusts 29 mph47 km/h
UV peak
4
Friday, Oct 30. Sunny. High 69°21°, low 46°8°. Typical 59°15° / 38°3°. Dry. Forecasts differ.
1. Morning
  6 AM–noon
  Sunny, 46°8°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 68°20°
  Dry
3. Evening
  6 PM–midnight
  Clear, 57°14°
  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 69.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
High, likely
65°18°–72°22°
Low, likely
42°6°–49°9°
Typical high / low
59°15° / 38°3°
Wind
11 mph17 km/h, gusts 23 mph37 km/h
UV peak
4
Saturday, Oct 31. Partly sunny. High 67°19°, low 46°8°. Typical 59°15° / 38°3°. Dry. Forecasts differ.
1. Morning
  6 AM–noon
  Sunny, 45°7°
  Dry
2. Afternoon
  noon–6 PM
  Cloudy, 66°19°
  Dry
3. Evening
  6 PM–midnight
  Cloudy, 55°13°
  Dry
4. Overnight
  midnight–6 AM
  Mostly 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
59°15°–73°23°
Low, likely
43°6°–51°11°
Typical high / low
59°15° / 38°3°
Wind
10 mph16 km/h, gusts 23 mph36 km/h
UV peak
3
Sunday, Nov 1. Cloudy. High 65°18°, low 49°9°. Typical 59°15° / 37°3°. Rain 0.01 in0.3 mm, 20% chance. Forecasts differ.
1. Morning
  6 AM–noon
  Cloudy, 48°9°
  Dry
2. Afternoon
  noon–6 PM
  Cloudy, 63°17°
  20% chance
3. Evening
  6 PM–midnight
  Cloudy, 55°13°
  20% chance
4. Overnight
  midnight–6 AM
  Cloudy, 55°13°
  20% chance
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
56°13°–69°21°
Low, likely
44°7°–55°13°
Typical high / low
59°15° / 37°3°
Wind
10 mph15 km/h, gusts 24 mph38 km/h
UV peak
2
Monday, Nov 2. Drizzle. High 65°18°, low 56°13°. Typical 58°14° / 37°3°. Rain 0.23 in5.8 mm, 30% chance. Mostly agree.
1. Morning
  6 AM–noon
  Cloudy, 59°15°
  20% chance · 0.01 in0.3 mm
2. Afternoon
  noon–6 PM
  Drizzle, 67°19°
  20% chance · 0.1 in2.4 mm
3. Evening
  6 PM–midnight
  Drizzle, 59°15°
  20% chance · 0.05 in1.4 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°–68°20°
Low, likely
53°12°–59°15°
Typical high / low
58°14° / 37°3°
Wind
19 mph30 km/h, gusts 40 mph64 km/h
UV peak
3

10 days15 days30 days

The outlook

Today
Dry, high 61°, low 36°.
Tomorrow
Dry, high 64°, low 36°, warming up.
Monday
Dry, high 66°, low 45°.
Rest of week
Mostly dry, highs 61–69°.

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

Conestoga River at Lancaster

16 mi

Below flood stage

Level: 3.6 ft
Flow: 266 cfs

Forecast peak 3.6 ft Sat 8 AM

Reading from Sat 1:15 AM · NWS gauge page

West Branch Brandywine Creek at Coatesville

9.2 mi

Below flood stage

Level: 3.5 ft
Flow: 15 cfs

Reading from Sat 1:45 AM · NWS gauge page

Pequea Creek near Ronks

9.5 mi

Level: 2.4 ft
Flow: 34 cfs

Reading from Sat 1:30 AM · NWS gauge page

West Branch Brandywine Creek at Modena

10 mi

Below flood stage

Level: 2.9 ft
Flow: 28 cfs

Reading from Sat 1:30 AM · NWS gauge page

For your home

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

Heating this week

About 69% less heating than a typical week.

This week 33Typical 106

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

Comfort

Dry air outside (dew point 36°F).

Open the windows?

Today, 3:00 PM–5:00 PM

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

Is this typical?

Octoraro Lake · official normals 1991–2020 · records 1978–2026

Oct 24, 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

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

Sun & moon

Sun

Daylight: 10 h 47 min; Losing 2 min 25 s a day; shortest Dec 21, 1 h 28 min less
Golden hour: 5:34–6:28 PM; Morning 7:07–8:01 AM
Blue hour: 6:28–6:39 PM; Morning 6:56–7:07 AM; first light 6:56 AM

Stars tonight? Fair

Mostly clear 2:46–6 AM, but the moon is 96% lit and up.

Moon

Waxing gibbous

95% lit · growing

Today: sets 5:35 AM · rises 5:08 PM
Full moon: Oct 26
New moon: Nov 9

Looking southwest from Christiana. The highest point on the skyline is about 4,500 ft, 21 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 Warning

Christiana, PA weather

Next 2 hours

Next 48 hours

Days ahead

The outlook

Today

Tomorrow

Monday

Rest of week

What changed since yesterday

Radar

Rivers

Conestoga River at Lancaster

West Branch Brandywine Creek at Coatesville

Pequea Creek near Ronks

West Branch Brandywine Creek at Modena

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