Observed 3:50 PM EDT at KSEG

Northumberland, PA weather

Sunny and 61°16°, jacket by 7 PM.

Forecasts agree

Now 61°16°

Sunny

Wind: 3 mph5 km/h; From the southeast. Light through 4 AM
Dew point: 34°1°; Dry, static shocks likely
UV tomorrow: 4Moderate; Moderate 11 AM–4 PM · peak 4
Pressure: 30.51 inHg1033 hPa; Falling · −0.05 inHg−1.6 hPa in 3 h

No precipitation expected in the next 2 hours.

From forecast models

Next 48 hours

About the same as this time yesterday (63°17° then, 61°16° now)

Good hours for

Drops 12°7° tonight 7–10 PM (55°13° → 43°6°)
Below 50°10° tonight after 9 PM
Below freezing tomorrow 6–9 AM (low 32°0°)
Above 50°10° tomorrow by 11 AM
Drops 13°7° tomorrow night 6–9 PM (61°16° → 48°9°)

This afternoonNear 62°17° · Clear
TonightDown to 33°1° by 5 AM · Clear
Tomorrow morningUp to 50°10° by 11 AM · freezing, low 32°0° · Clear
Tomorrow afternoonUp to 64°18° by 4 PM · Clear
Tomorrow nightDown to 37°3° by 4 AM · Partly cloudy
Monday morningUp to 52°11° by 11 AM · Partly cloudy
Monday afternoonUp to 68°20° by 3 PM · 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 4p	Sunny	61°16° (likely 58°14° to 61°16°)	61°16°	0%	1 mph2 km/h from SW, gusts 5 mph7 km/h	36%	1%	1
Sat 5p	Sunny	62°17° (likely 57°14° to 62°17°)	62°17°	0%	1 mph2 km/h from S, gusts 4 mph6 km/h	34%	0%	0
Sat 6p	Clear	60°16° (likely 53°12° to 60°16°)	60°16°	0%	1 mph2 km/h from S, gusts 3 mph6 km/h	37%	0%	0
Sat 7p	Clear	55°13° (likely 49°9° to 55°13°)	55°13°	0%	0 mph0 km/h, gusts 2 mph3 km/h	49%	0%	0
Sat 8p	Clear	50°10° (likely 46°8° to 50°10°)	50°10°	0%	0 mph0 km/h, gusts 3 mph5 km/h	61%	0%	0
Sat 9p	Clear	43°6° (likely 43°6° to 47°8°)	43°6°	0%	0 mph0 km/h, gusts 4 mph6 km/h	82%	0%	0
Sat 10p	Clear	40°4° (likely 40°4° to 45°7°)	40°4°	0%	0 mph0 km/h, gusts 3 mph5 km/h	92%	0%	0
Sat 11p	Clear	38°3° (likely 38°3° to 44°7°)	38°3°	0%	0 mph0 km/h, gusts 3 mph4 km/h	100%	0%	0
Sun 12a	Clear	37°3° (likely 37°3° to 43°6°)	37°3°	0%	0 mph0 km/h, gusts 2 mph4 km/h	100%	0%	0
Sun 1a	Clear	36°2° (likely 36°2° to 42°6°)	36°2°	0%	0 mph0 km/h, gusts 2 mph3 km/h	100%	0%	0
Sun 2a	Clear	35°2° (likely 35°2° to 42°6°)	35°2°	0%	0 mph0 km/h, gusts 2 mph3 km/h	100%	0%	0
Sun 3a	Clear	34°1° (likely 34°1° to 41°5°)	34°1°	0%	0 mph0 km/h, gusts 2 mph4 km/h	100%	0%	0
Sun 4a	Clear	34°1° (likely 34°1° to 40°4°)	34°1°	0%	0 mph0 km/h, gusts 2 mph3 km/h	100%	0%	0
Sun 5a	Clear	33°1° (likely 33°1° to 40°4°)	33°1°	0%	0 mph0 km/h, gusts 2 mph3 km/h	100%	0%	0
Sun 6a	Clear	32°0° (likely 32°0° to 39°4°)	32°0°	0%	0 mph0 km/h, gusts 2 mph3 km/h	100%	1%	0
Sun 7a	Sunny	32°0° (likely 32°0° to 38°3°)	32°0°	0%	0 mph0 km/h, gusts 2 mph3 km/h	96%	2%	0
Sun 8a	Sunny	32°0° (likely 32°0° to 38°3°)	32°0°	0%	0 mph0 km/h, gusts 1 mph2 km/h	96%	3%	0
Sun 9a	Sunny	36°2° (likely 36°2° to 41°5°)	36°2°	0%	0 mph0 km/h, gusts 1 mph1 km/h	92%	2%	1
Sun 10a	Sunny	44°7° (likely 44°7° to 48°9°)	44°7°	0%	0 mph0 km/h, gusts 2 mph3 km/h	79%	1%	2
Sun 11a	Sunny	50°10° (likely 50°10° to 52°11°)	50°10°	0%	0 mph0 km/h, gusts 4 mph6 km/h	68%	1%	3
Sun 12p	Sunny	55°13° (likely 54°12° to 56°13°)	55°13°	0%	0 mph0 km/h, gusts 7 mph11 km/h	57%	1%	3
Sun 1p	Sunny	60°16° (likely 56°13° to 60°16°)	60°16°	0%	1 mph2 km/h from SW, gusts 8 mph13 km/h	49%	1%	4
Sun 2p	Sunny	62°17° (likely 58°14° to 62°17°)	62°17°	0%	2 mph3 km/h from S, gusts 8 mph14 km/h	46%	3%	4
Sun 3p	Sunny	63°17° (likely 59°15° to 63°17°)	63°17°	0%	2 mph3 km/h from S, gusts 9 mph15 km/h	44%	1%	3
Sun 4p	Sunny	64°18° (likely 60°16° to 64°18°)	64°18°	0%	2 mph3 km/h from SW, gusts 10 mph15 km/h	41%	1%	2
Sun 5p	Sunny	63°17° (likely 58°14° to 63°17°)	63°17°	0%	1 mph2 km/h from SW, gusts 9 mph15 km/h	41%	1%	1
Sun 6p	Clear	61°16° (likely 54°12° to 61°16°)	61°16°	0%	0 mph0 km/h, gusts 6 mph10 km/h	46%	0%	0
Sun 7p	Clear	56°13° (likely 50°10° to 56°13°)	56°13°	0%	0 mph0 km/h, gusts 5 mph8 km/h	57%	0%	0
Sun 8p	Clear	48°9° (likely 48°9° to 50°10°)	48°9°	0%	0 mph0 km/h, gusts 4 mph6 km/h	86%	2%	0
Sun 9p	Clear	45°7° (likely 45°7° to 48°9°)	45°7°	0%	0 mph0 km/h, gusts 3 mph5 km/h	93%	27%	0
Sun 10p	Clear	43°6° (likely 43°6° to 46°8°)	43°6°	0%	0 mph0 km/h, gusts 4 mph6 km/h	100%	10%	0
Sun 11p	Clear	42°6° (likely 42°6° to 45°7°)	42°6°	0%	0 mph0 km/h, gusts 4 mph6 km/h	100%	41%	0
Mon 12a	Clear	41°5° (likely 41°5° to 44°7°)	41°5°	0%	0 mph0 km/h, gusts 4 mph6 km/h	100%	41%	0
Mon 1a	Partly cloudy	40°4° (likely 40°4° to 44°7°)	40°4°	0%	0 mph0 km/h, gusts 3 mph5 km/h	100%	48%	0
Mon 2a	Clear	39°4° (likely 39°4° to 43°6°)	39°4°	0%	0 mph0 km/h, gusts 3 mph5 km/h	100%	12%	0
Mon 3a	Clear	38°3° (likely 38°3° to 42°6°)	38°3°	0%	0 mph0 km/h, gusts 2 mph4 km/h	100%	28%	0
Mon 4a	Partly cloudy	37°3° (likely 37°3° to 42°6°)	37°3°	0%	0 mph0 km/h, gusts 3 mph5 km/h	100%	62%	0
Mon 5a	Clear	37°3° (likely 36°2° to 41°5°)	37°3°	0%	0 mph0 km/h, gusts 3 mph5 km/h	100%	40%	0
Mon 6a	Clear	36°2° (likely 36°2° to 41°5°)	36°2°	0%	0 mph0 km/h, gusts 2 mph4 km/h	100%	40%	0
Mon 7a	Clear	36°2° (likely 35°2° to 40°4°)	36°2°	0%	0 mph0 km/h, gusts 3 mph4 km/h	100%	44%	0
Mon 8a	Sunny	36°2° (likely 35°2° to 39°4°)	36°2°	0%	0 mph0 km/h, gusts 2 mph4 km/h	100%	46%	0
Mon 9a	Mostly cloudy	39°4° (likely 36°2° to 44°7°)	39°4°	0%	0 mph0 km/h, gusts 3 mph5 km/h	100%	44%	1
Mon 10a	Sunny	46°8° (likely 41°5° to 50°10°)	46°8°	0%	0 mph0 km/h, gusts 4 mph6 km/h	89%	19%	2
Mon 11a	Mostly sunny	52°11° (likely 46°8° to 56°13°)	52°11°	0%	0 mph0 km/h, gusts 6 mph9 km/h	83%	10%	3
Mon 12p	Sunny	57°14° (likely 52°11° to 59°15°)	57°14°	0%	0 mph0 km/h, gusts 7 mph12 km/h	72%	5%	4
Mon 1p	Sunny	62°17° (likely 57°14° to 62°17°)	62°17°	0%	1 mph2 km/h from W, gusts 9 mph14 km/h	62%	3%	4
Mon 2p	Sunny	67°19° (likely 61°16° to 67°19°)	67°19°	0%	1 mph2 km/h from W, gusts 8 mph13 km/h	54%	3%	4
Mon 3p	Sunny	68°20° (likely 62°17° to 68°20°)	68°20°	0%	1 mph2 km/h from W, gusts 8 mph13 km/h	53%	3%	3

Days ahead

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

Today, Oct 24. Sunny. High 62°17°, low 32°0°. Typical 61°16° / 38°3°. Dry. Forecasts agree.
1. Afternoon
  noon–6 PM
  Sunny, 62°17°
  Dry
2. Evening
  6 PM–midnight
  Clear, 50°10°
  Dry
3. Overnight
  midnight–6 AM
  Clear, 33°1°
  Dry
Official NWS forecast
Today: Sunny, with a high near 62. Southwest wind around 1 mph.
Tonight: Areas of frost after midnight. Mostly clear, with a low around 32. West wind around 1 mph.
Forecasts agreeIndependent forecasts are close; the range is narrow.
High, likely
58°14°–62°17°
Low, likely
28°−2°–35°2°
Typical high / low
61°16° / 38°3°
Wind
4 mph7 km/h, gusts 10 mph17 km/h
UV peak
4
Tomorrow, Oct 25. Mostly sunny. High 64°18°, low 36°2°. Typical 60°16° / 38°3°. Dry. Forecasts agree.
1. Morning
  6 AM–noon
  Sunny, 32°0°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 64°18°
  Dry
3. Evening
  6 PM–midnight
  Clear, 48°9°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 37°3°
  Dry
Official NWS forecast
Day: Widespread frost before 10am. Sunny, with a high near 64. Southwest wind around 2 mph.
Night: Patchy frost after 4am. Mostly clear, with a low around 36. Wind around 0 mph.
Forecasts agreeIndependent forecasts are close; the range is narrow.
High, likely
60°16°–64°18°
Low, likely
32°0°–38°3°
Typical high / low
60°16° / 38°3°
Wind
7 mph11 km/h
UV peak
4
Monday, Oct 26. Partly sunny. High 70°21°, low 42°6°. Typical 60°16° / 37°3°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Mostly cloudy, 36°2°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 68°20°
  Dry
3. Evening
  6 PM–midnight
  Clear, 54°12°
  Dry
4. Overnight
  midnight–6 AM
  Cloudy, 45°7°
  Dry
Official NWS forecast
Day: Patchy frost before 9am. Mostly sunny, with a high near 70. Northwest wind around 1 mph.
Night: Mostly clear, with a low around 42.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
64°18°–70°21°
Low, likely
34°1°–42°6°
Typical high / low
60°16° / 37°3°
Wind
7 mph10 km/h, gusts 14 mph22 km/h
UV peak
4
Tuesday, Oct 27. Mostly sunny. High 63°17°, low 34°1°. Typical 60°16° / 37°3°. Dry. Forecasts agree.
1. Morning
  6 AM–noon
  Sunny, 42°6°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 58°15°
  Dry
3. Evening
  6 PM–midnight
  Clear, 47°8°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 35°2°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Sunny, with a high near 63.
Night: Patchy frost after 2am. Mostly clear, with a low around 34.
Forecasts agreeIndependent forecasts are close; the range is narrow.
High, likely
58°14°–63°17°
Low, likely
34°1°–44°7°
Typical high / low
60°16° / 37°3°
Wind
8 mph13 km/h, gusts 16 mph26 km/h
UV peak
4
Wednesday, Oct 28. Cloudy. High 63°17°, low 42°6°. Typical 59°15° / 37°3°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Sunny, 35°2°
  Dry
2. Afternoon
  noon–6 PM
  Cloudy, 57°14°
  Dry
3. Evening
  6 PM–midnight
  Cloudy, 49°10°
  Dry
4. Overnight
  midnight–6 AM
  Mostly clear, 43°6°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Patchy frost before 9am. Mostly sunny, with a high near 63.
Night: Partly cloudy, with a low around 42.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
57°14°–63°17°
Low, likely
31°−1°–42°6°
Typical high / low
59°15° / 37°3°
Wind
7 mph11 km/h, gusts 16 mph26 km/h
UV peak
3
Thursday, Oct 29. Partly sunny. High 69°21°, low 44°7°. Typical 59°15° / 36°2°. 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, 54°12°
  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 69.
Night: Mostly clear, with a low around 44.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
62°17°–69°21°
Low, likely
38°3°–46°8°
Typical high / low
59°15° / 36°2°
Wind
9 mph14 km/h, gusts 24 mph38 km/h
UV peak
4
Friday, Oct 30. Mostly sunny. High 72°22°, low 44°7°. Typical 59°15° / 36°2°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Mostly sunny, 44°6°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 68°20°
  Dry
3. Evening
  6 PM–midnight
  Clear, 56°13°
  Dry
4. Overnight
  midnight–6 AM
  Mostly clear, 46°8°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Sunny, with a high near 72.
Night: Partly cloudy, with a low around 44.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
67°19°–72°22°
Low, likely
40°4°–47°8°
Typical high / low
59°15° / 36°2°
Wind
6 mph10 km/h, gusts 24 mph39 km/h
UV peak
3
Saturday, Oct 31. Cloudy. High 67°19°, low 45°7°. Typical 58°14° / 36°2°. Dry. Forecasts differ.
1. Morning
  6 AM–noon
  Partly sunny, 44°7°
  Dry
2. Afternoon
  noon–6 PM
  Cloudy, 68°20°
  Dry
3. Evening
  6 PM–midnight
  Cloudy, 56°14°
  Dry
4. Overnight
  midnight–6 AM
  Cloudy, 51°10°
  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°–70°21°
Low, likely
43°6°–47°8°
Typical high / low
58°14° / 36°2°
Wind
5 mph8 km/h, gusts 23 mph37 km/h
UV peak
3
Sunday, Nov 1. Drizzle. High 66°19°, low 50°10°. Typical 58°14° / 36°2°. Rain 0.02 in0.5 mm, 40% chance. Forecasts differ.
1. Morning
  6 AM–noon
  Cloudy, 54°12°
  20% chance · 0.02 in0.4 mm
2. Afternoon
  noon–6 PM
  Cloudy, 65°18°
  40% chance
3. Evening
  6 PM–midnight
  Drizzle, 61°16°
  40% chance · 0.01 in0.4 mm
4. Overnight
  midnight–6 AM
  Drizzle, 59°15°
  30% chance · 0.16 in4 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
60°16°–68°20°
Low, likely
45°7°–53°12°
Typical high / low
58°14° / 36°2°
Wind
11 mph17 km/h, gusts 25 mph41 km/h
UV peak
1
Monday, Nov 2. Showers. High 67°19°, low 57°14°. Typical 57°14° / 35°2°. Rain 0.8 in20 mm, 40% chance. Mostly agree.
1. Morning
  6 AM–noon
  Drizzle, 60°16°
  30% chance · 0.19 in4.8 mm
2. Afternoon
  noon–6 PM
  Showers, 66°19°
  20% chance · 0.21 in5.2 mm
3. Evening
  6 PM–midnight
  Showers, 62°17°
  30% chance · 0.46 in12 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
63°17°–69°21°
Low, likely
54°12°–63°17°
Typical high / low
57°14° / 35°2°
Wind
13 mph21 km/h, gusts 31 mph50 km/h

10 days15 days30 days

The outlook

Today
Dry, high 62°, low 32°.
Tomorrow
Dry, high 64°, low 36°.
Monday
Dry, high 70°, low 42°, warming up.
Rest of week
Highs 63–72°; chance of precipitation on Sunday.

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 Sunbury

4.7 mi

Below flood stage

Level: 7.2 ft
Flow: 8,250 cfs

Forecast peak 7.1 ft Sat 8 PM

Reading from Sat 2:45 PM · NWS gauge page

West Branch Susquehanna River at Lewisburg

6.5 mi

Below flood stage

Level: 2.3 ft
Flow: 3,350 cfs

Forecast peak 2.3 ft Sat 8 PM

Reading from Sat 2:45 PM · NWS gauge page

West Branch Susquehanna River at West Milton

9.2 mi

Below flood stage

Level: 1.6 ft
Flow: 1,990 cfs

Forecast peak 1.6 ft Sat 8 PM

Reading from Sat 2:30 PM · NWS gauge page

Susquehanna River at Danville

10 mi

Below flood stage

Level: 3.2 ft
Flow: 4,380 cfs

Forecast peak 3.2 ft Sat 8 PM

Reading from Sat 2:30 PM · 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 37Typical 117

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 34°F).

Open the windows?

Today, 5:00 PM–6:00 PM

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

Is this typical?

Selinsgrove Penn Valley Airport · official normals 1991–2020 · records 1947–2026

Oct 24, today vs a typical year

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

Last 7 days vs normal

On average 2°1° colder than normal (daily mean temperature).

−6°−4°SunOct 18
−1°MonOct 19
—TueOct 20
−1°WedOct 21
−2°−1°ThuOct 22
−1°FriOct 23
—SatOct 24

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

Sun & moon

Sun

Daylight: 10 h 45 min; Losing 2 min 35 s a day; shortest Dec 21, 1 h 31 min less
Golden hour: 5:35–6:30 PM; Morning 7:11–8:06 AM
Blue hour: 6:30–6:41 PM; Morning 7:00–7:11 AM; first light 7:00 AM

Stars tonight? Fair

Clear 6:41 PM–7:01 AM, but the moon is 99% lit and up.

Moon

Waxing gibbous

98% lit · growing

Today: sets 5:39 AM · rises 5:10 PM
Full moon: Oct 26
New moon: Nov 9

Looking west from Northumberland. The highest point on the skyline is about 2,200 ft, 26 mi away.Skyline from USGS elevation data, heights drawn up to 6× taller. Sky, sun and moon as they are now.

Northumberland, 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 Sunbury

West Branch Susquehanna River at Lewisburg

West Branch Susquehanna River at West Milton

Susquehanna River at Danville

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