Freeze Warning
Ends in 2 h 23 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 6:10 AM EDT at KMDT

Marietta, PA weather

Freeze Warning. 37°3° and clear now.

Forecasts agree

Now 37°3°

Clear

Wind: 3 mph5 km/h; From the east-northeast. Light through 6 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
Air quality: 84Moderate; Main pollutant: PM2.5 (fine particles)
Pressure: 30.52 inHg1034 hPa; Rising slowly · +0.03 inHg+0.9 hPa in 3 h

No precipitation expected in the next 2 hours.

From forecast models

Next 48 hours

9°5° cooler than this time yesterday (47°8° then, 38°3° now)

Good hours for

Fog until 10 AM
Above 50°10° today by 11 AM
Below 50°10° tonight after 8 PM
Fog tomorrow 8–10 AM
Fog tomorrow night from 3 AM

This morningUp to 53°12° by 11 AM · Clear
This afternoonUp to 62°17° by 4 PM · Clear
TonightDown to 36°2° by 5 AM · Clear
Tomorrow morningUp to 54°12° by 11 AM · Clear
Tomorrow afternoonUp to 65°18° by 4 PM · Clear
Tomorrow nightDown to 39°4° by 4 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 6a	Fog	35°2° (likely 35°2° to 41°5°)	35°2°	0%	0 mph0 km/h, gusts 4 mph7 km/h	100%	29%	0
Sat 7a	Fog	36°2° (likely 36°2° to 40°4°)	36°2°	0%	0 mph0 km/h, gusts 3 mph5 km/h	100%	37%	0
Sat 8a	Fog	36°2° (likely 36°2° to 40°4°)	36°2°	0%	0 mph0 km/h, gusts 2 mph3 km/h	100%	38%	0
Sat 9a	Fog	41°5° (likely 40°4° to 43°6°)	41°5°	0%	0 mph0 km/h, gusts 3 mph4 km/h	96%	32%	1
Sat 10a	Sunny	48°9° (likely 46°8° to 49°9°)	48°9°	0%	0 mph0 km/h, gusts 4 mph6 km/h	77%	6%	2
Sat 11a	Sunny	53°12° (likely 50°10° to 53°12°)	53°12°	0%	0 mph0 km/h, gusts 3 mph5 km/h	66%	0%	3
Sat 12p	Sunny	56°13° (likely 54°12° to 57°14°)	56°13°	0%	0 mph0 km/h, gusts 3 mph5 km/h	55%	0%	4
Sat 1p	Sunny	59°15° (likely 56°13° to 59°15°)	59°15°	0%	1 mph2 km/h from SE, gusts 4 mph6 km/h	47%	0%	4
Sat 2p	Sunny	61°16° (likely 58°14° to 61°16°)	61°16°	0%	1 mph2 km/h from SE, gusts 4 mph6 km/h	42%	0%	4
Sat 3p	Sunny	61°16° (likely 59°15° to 61°16°)	61°16°	0%	1 mph2 km/h from SE, gusts 3 mph5 km/h	42%	0%	3
Sat 4p	Sunny	62°17° (likely 59°15° to 62°17°)	62°17°	0%	1 mph2 km/h from SE, gusts 3 mph4 km/h	39%	0%	2
Sat 5p	Sunny	61°16° (likely 58°14° to 61°16°)	61°16°	0%	1 mph2 km/h from E, gusts 4 mph6 km/h	41%	0%	1
Sat 6p	Clear	58°14° (likely 54°12° to 58°14°)	58°14°	0%	1 mph2 km/h from E, gusts 4 mph6 km/h	47%	0%	0
Sat 7p	Clear	53°12° (likely 51°11° to 53°12°)	53°12°	0%	0 mph0 km/h, gusts 2 mph4 km/h	57%	0%	0
Sat 8p	Clear	48°9° (likely 48°9° to 52°11°)	48°9°	0%	0 mph0 km/h, gusts 4 mph7 km/h	68%	0%	0
Sat 9p	Clear	46°8° (likely 46°8° to 50°10°)	46°8°	0%	0 mph0 km/h, gusts 4 mph6 km/h	71%	0%	0
Sat 10p	Clear	44°7° (likely 44°7° to 48°9°)	44°7°	0%	0 mph0 km/h, gusts 4 mph6 km/h	76%	0%	0
Sat 11p	Clear	42°6° (likely 42°6° to 47°8°)	42°6°	0%	0 mph0 km/h, gusts 3 mph5 km/h	86%	0%	0
Sun 12a	Clear	41°5° (likely 41°5° to 46°8°)	41°5°	0%	0 mph0 km/h, gusts 4 mph6 km/h	89%	0%	0
Sun 1a	Clear	40°4° (likely 40°4° to 44°7°)	40°4°	0%	0 mph0 km/h, gusts 3 mph5 km/h	89%	0%	0
Sun 2a	Clear	39°4° (likely 39°4° to 44°7°)	39°4°	0%	0 mph0 km/h, gusts 3 mph4 km/h	92%	9%	0
Sun 3a	Clear	38°3° (likely 38°3° to 42°6°)	38°3°	0%	0 mph0 km/h, gusts 2 mph3 km/h	92%	14%	0
Sun 4a	Clear	37°3° (likely 37°3° to 42°6°)	37°3°	0%	0 mph0 km/h, gusts 2 mph4 km/h	96%	12%	0
Sun 5a	Clear	36°2° (likely 36°2° to 41°5°)	36°2°	0%	0 mph0 km/h, gusts 2 mph4 km/h	100%	10%	0
Sun 6a	Clear	36°2° (likely 36°2° to 40°4°)	36°2°	0%	0 mph0 km/h, gusts 3 mph4 km/h	100%	11%	0
Sun 7a	Sunny	35°2° (likely 35°2° to 40°4°)	35°2°	0%	0 mph0 km/h, gusts 2 mph4 km/h	100%	16%	0
Sun 8a	Fog	36°2° (likely 36°2° to 40°4°)	36°2°	0%	0 mph0 km/h, gusts 2 mph3 km/h	100%	20%	0
Sun 9a	Fog	41°5° (likely 40°4° to 44°7°)	41°5°	0%	0 mph0 km/h, gusts 2 mph3 km/h	96%	17%	1
Sun 10a	Sunny	48°9° (likely 48°9° to 49°9°)	48°9°	0%	0 mph0 km/h, gusts 2 mph4 km/h	80%	3%	2
Sun 11a	Sunny	54°12° (likely 53°12° to 55°13°)	54°12°	0%	0 mph0 km/h, gusts 2 mph4 km/h	66%	2%	3
Sun 12p	Sunny	57°14° (likely 56°13° to 58°14°)	57°14°	0%	0 mph0 km/h, gusts 4 mph6 km/h	59%	1%	4
Sun 1p	Sunny	61°16° (likely 58°14° to 61°16°)	61°16°	0%	1 mph2 km/h from W, gusts 5 mph8 km/h	51%	3%	4
Sun 2p	Sunny	63°17° (likely 60°16° to 63°17°)	63°17°	0%	2 mph3 km/h from W, gusts 5 mph8 km/h	50%	8%	4
Sun 3p	Sunny	63°17° (likely 61°16° to 63°17°)	63°17°	0%	1 mph2 km/h from W, gusts 5 mph8 km/h	50%	6%	3
Sun 4p	Sunny	65°18° (likely 62°17° to 65°18°)	65°18°	0%	0 mph0 km/h, gusts 5 mph9 km/h	46%	6%	2
Sun 5p	Sunny	63°17° (likely 61°16° to 63°17°)	63°17°	0%	0 mph0 km/h, gusts 4 mph7 km/h	50%	4%	1
Sun 6p	Clear	60°16° (likely 56°13° to 60°16°)	60°16°	0%	0 mph0 km/h, gusts 4 mph7 km/h	55%	1%	0
Sun 7p	Clear	55°13° (likely 52°11° to 55°13°)	55°13°	0%	0 mph0 km/h, gusts 6 mph9 km/h	66%	0%	0
Sun 8p	Clear	50°10° (likely 50°10° to 53°12°)	50°10°	0%	0 mph0 km/h, gusts 5 mph7 km/h	80%	0%	0
Sun 9p	Clear	48°9° (likely 48°9° to 51°11°)	48°9°	0%	0 mph0 km/h, gusts 3 mph5 km/h	80%	0%	0
Sun 10p	Clear	46°8° (likely 46°8° to 49°9°)	46°8°	0%	0 mph0 km/h, gusts 4 mph6 km/h	86%	0%	0
Sun 11p	Clear	44°7° (likely 44°7° to 48°9°)	44°7°	0%	0 mph0 km/h, gusts 4 mph7 km/h	96%	0%	0
Mon 12a	Clear	43°6° (likely 43°6° to 47°8°)	43°6°	0%	0 mph0 km/h, gusts 4 mph6 km/h	100%	10%	0
Mon 1a	Clear	42°6° (likely 42°6° to 46°8°)	42°6°	0%	1 mph2 km/h from SW, gusts 3 mph5 km/h	100%	13%	0
Mon 2a	Clear	41°5° (likely 40°4° to 45°7°)	41°5°	0%	1 mph2 km/h from W, gusts 3 mph5 km/h	100%	13%	0
Mon 3a	Fog	40°4° (likely 37°3° to 46°8°)	40°4°	0%	1 mph2 km/h from W, gusts 4 mph6 km/h	100%	14%	0
Mon 4a	Fog	39°4° (likely 36°2° to 45°7°)	39°4°	0%	2 mph3 km/h from W, gusts 4 mph6 km/h	100%	18%	0
Mon 5a	Fog	39°4° (likely 36°2° to 45°7°)	39°4°	0%	2 mph3 km/h from W, gusts 4 mph6 km/h	100%	27%	0

Days ahead

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

Today, Oct 24. Fog. High 63°17°, low 35°2°. Typical 63°17° / 43°6°. Dry. Forecasts agree.
1. Morning
  6 AM–noon
  Fog, 36°2°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 62°17°
  Dry
3. Evening
  6 PM–midnight
  Clear, 48°9°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 36°2°
  Dry
Official NWS forecast
Today: Areas of frost and patchy fog before 10am. Sunny, with a high near 63. East wind around 1 mph.
Tonight: Patchy fog between midnight and 4am, then patchy frost and patchy fog. Mostly clear, with a low around 35. Southeast wind around 1 mph.
Forecasts agreeIndependent forecasts are close; the range is narrow.
High, likely
59°15°–63°17°
Low, likely
35°2°–40°4°
Typical high / low
63°17° / 43°6°
Wind
6 mph10 km/h
UV peak
4
Tomorrow, Oct 25. Fog. High 65°18°, low 37°3°. Typical 62°17° / 42°6°. Dry. Forecasts agree.
1. Morning
  6 AM–noon
  Fog, 36°2°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 65°18°
  Dry
3. Evening
  6 PM–midnight
  Clear, 50°10°
  Dry
4. Overnight
  midnight–6 AM
  Fog, 39°4°
  Dry
Official NWS forecast
Day: Patchy frost and patchy fog before 10am. Sunny, with a high near 65. West wind around 2 mph.
Night: Areas of fog after 11pm. Mostly clear, with a low around 37. Southwest wind around 2 mph.
Forecasts agreeIndependent forecasts are close; the range is narrow.
High, likely
62°17°–65°18°
Low, likely
36°2°–40°4°
Typical high / low
62°17° / 42°6°
Wind
5 mph8 km/h
UV peak
4
Monday, Oct 26. Fog. High 69°21°, low 45°7°. Typical 62°17° / 42°6°. Dry. Forecasts agree.
1. Morning
  6 AM–noon
  Sunny, 40°5°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 66°19°
  Dry
3. Evening
  6 PM–midnight
  Clear, 55°13°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 49°9°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Patchy fog before 9am. Sunny, with a high near 69. West wind 2 to 7 mph.
Night: Mostly clear, with a low around 45.
Forecasts agreeIndependent forecasts are close; the range is narrow.
High, likely
66°19°–69°21°
Low, likely
36°2°–45°7°
Typical high / low
62°17° / 42°6°
Wind
9 mph15 km/h, gusts 15 mph24 km/h
UV peak
4
Tuesday, Oct 27. Mostly sunny. High 64°18°, low 39°4°. Typical 62°17° / 42°6°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Sunny, 48°9°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 63°17°
  Dry
3. Evening
  6 PM–midnight
  Clear, 52°11°
  Dry
4. Overnight
  midnight–6 AM
  Mostly clear, 42°5°
  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 39.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
61°16°–65°18°
Low, likely
39°4°–48°9°
Typical high / low
62°17° / 42°6°
Wind
11 mph17 km/h, gusts 22 mph36 km/h
UV peak
4
Wednesday, Oct 28. Cloudy. High 63°17°, low 44°7°. Typical 61°16° / 42°6°. Dry. Forecasts differ.
1. Morning
  6 AM–noon
  Sunny, 40°5°
  Dry
2. Afternoon
  noon–6 PM
  Cloudy, 60°16°
  Dry
3. Evening
  6 PM–midnight
  Partly cloudy, 51°11°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 46°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 44.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
High, likely
58°14°–63°17°
Low, likely
38°3°–44°7°
Typical high / low
61°16° / 42°6°
Wind
8 mph12 km/h, gusts 17 mph27 km/h
UV peak
4
Thursday, Oct 29. Partly sunny. High 70°21°, low 48°9°. Typical 61°16° / 41°5°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Sunny, 45°7°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 66°19°
  Dry
3. Evening
  6 PM–midnight
  Clear, 55°13°
  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 70.
Night: Mostly clear, with a low around 48.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
64°18°–70°21°
Low, likely
41°5°–48°9°
Typical high / low
61°16° / 41°5°
Wind
7 mph12 km/h, gusts 24 mph38 km/h
UV peak
4
Friday, Oct 30. Mostly sunny. High 71°22°, low 46°8°. Typical 60°16° / 41°5°. Dry. Forecasts agree.
1. Morning
  6 AM–noon
  Sunny, 46°8°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 70°21°
  Dry
3. Evening
  6 PM–midnight
  Clear, 59°15°
  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 71.
Night: Mostly clear, with a low around 46.
Forecasts agreeIndependent forecasts are close; the range is narrow.
High, likely
70°21°–71°22°
Low, likely
43°6°–49°9°
Typical high / low
60°16° / 41°5°
Wind
10 mph15 km/h, gusts 19 mph31 km/h
UV peak
4
Saturday, Oct 31. Cloudy. High 69°21°, low 47°8°. Typical 60°16° / 40°4°. Dry. Forecasts differ.
1. Morning
  6 AM–noon
  Sunny, 47°9°
  Dry
2. Afternoon
  noon–6 PM
  Cloudy, 68°20°
  Dry
3. Evening
  6 PM–midnight
  Cloudy, 59°15°
  Dry
4. Overnight
  midnight–6 AM
  Partly cloudy, 51°11°
  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°–72°22°
Low, likely
44°7°–51°11°
Typical high / low
60°16° / 40°4°
Wind
8 mph13 km/h, gusts 21 mph33 km/h
UV peak
3
Sunday, Nov 1. Cloudy. High 66°19°, low 51°11°. Typical 60°16° / 40°4°. Rain 0.01 in0.3 mm, 20% chance. Forecasts differ.
1. Morning
  6 AM–noon
  Cloudy, 51°10°
  Dry
2. Afternoon
  noon–6 PM
  Cloudy, 66°19°
  Dry
3. Evening
  6 PM–midnight
  Cloudy, 58°15°
  20% chance
4. Overnight
  midnight–6 AM
  Cloudy, 57°14°
  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
57°14°–71°22°
Low, likely
45°7°–55°13°
Typical high / low
60°16° / 40°4°
Wind
10 mph16 km/h, gusts 25 mph40 km/h
UV peak
1
Monday, Nov 2. Drizzle. High 70°21°, low 57°14°. Typical 59°15° / 40°4°. Rain 0.08 in2 mm, 30% chance. Mostly agree.
1. Morning
  6 AM–noon
  Partly sunny, 59°15°
  Dry
2. Afternoon
  noon–6 PM
  Drizzle, 70°21°
  20% chance · 0.02 in0.4 mm
3. Evening
  6 PM–midnight
  Partly cloudy, 60°15°
  30% chance · 0.01 in0.4 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
67°19°–72°22°
Low, likely
54°12°–59°15°
Typical high / low
59°15° / 40°4°
Wind
9 mph15 km/h, gusts 25 mph40 km/h
UV peak
2

10 days15 days30 days

The outlook

Today
Dry, high 63°, low 35°.
Tomorrow
Dry, high 65°, low 37°.
Monday
Dry, high 69°, low 45°, warming up.
Rest of week
Mostly dry, highs 63–71°.

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

1.1 mi

Below flood stage

Level: 34.5 ft
Flow: 13,800 cfs

Forecast peak 34.4 ft Sat 8 AM

Reading from Sat 4:30 AM · NWS gauge page

Swatara Creek at Middletown

13 mi

Below flood stage

Level: 2.2 ft

Forecast peak 2.2 ft Sat 8 AM

Reading from Sat 4:15 AM · NWS gauge page

Chiques Creek above MARIETTA

1.9 mi

Level: 2.9 ft
Flow: 90 cfs

Reading from Sat 4:15 AM · NWS gauge page

Kreutz Creek at Strickler

3.0 mi

Level: 1.7 ft
Flow: 22 cfs

Reading from Sat 4:15 AM · NWS gauge page

For your home

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

Heating this week

About 65% less heating than a typical week.

This week 33Typical 93

Heating degree days, base 65°F

Heat-pump hours, next 7 days

h below 47°F: 24
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 36°F).

Open the windows?

Today, 2:00 PM–5:00 PM

Good stretch to open the windows.

Is this typical?

Middletown Harrisburg Int'l Airport · official normals 1991–2020 · records 1888–2026

Oct 24, today vs a typical year

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

Last 7 days vs normal

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

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

Marietta 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: 5:36–6:30 PM; Morning 7:09–8:04 AM
Blue hour: 6:30–6:41 PM; Morning 6:58–7:09 AM; first light 6:58 AM

Stars tonight? Unknown

Cloud forecast not available for tonight.

Moon

Waxing gibbous

96% lit · growing

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

Looking south from Marietta. The highest point on the skyline is about 900 ft, 3 mi away.Skyline from USGS elevation data, heights drawn up to 4× taller. Sky, sun and moon as they are now.

1 active weather alert

Freeze Warning

Marietta, 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

Swatara Creek at Middletown

Chiques Creek above MARIETTA

Kreutz Creek at Strickler

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? Unknown

Moon