Observed 3:45 PM EDT at KSEG

Lykens, PA weather

Sunny and 63°17°, jacket by 6 PM.

Forecasts agree

Now 63°17°

Sunny

Wind: 5 mph7 km/h; From the north-northeast. Light through 4 AM
Dew point: 33°1°; Dry, static shocks likely
UV tomorrow: 4Moderate; Moderate 11 AM–4 PM · peak 4
Pressure: 30.36 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

Below 50°10° tonight after 8 PM
Low 33°1° tomorrow at 6 AM
Above 50°10° tomorrow by 11 AM

This afternoonNear 60°16° · Partly cloudy
TonightDown to 34°1° by 5 AM · Partly cloudy
Tomorrow morningUp to 53°12° by 11 AM · Clear
Tomorrow afternoonUp to 62°17° by 4 PM · Clear
Tomorrow nightDown to 35°2° by 5 AM · Clear
Sunday morningUp to 54°12° by 11 AM · Clear
Sunday afternoonUp to 64°18° 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
Fri 4p	Mostly sunny	60°16° (likely 59°15° to 60°16°)	60°16°	0%	3 mph5 km/h from NE, gusts 7 mph11 km/h	36%	29%	2
Fri 5p	Sunny	59°15° (likely 57°14° to 59°15°)	59°15°	0%	2 mph3 km/h from NE, gusts 7 mph12 km/h	37%	30%	1
Fri 6p	Cloudy	54°12° (likely 53°12° to 56°13°)	54°12°	0%	2 mph3 km/h from NE, gusts 6 mph10 km/h	47%	65%	0
Fri 7p	Partly cloudy	50°10° (likely 49°9° to 52°11°)	50°10°	0%	1 mph2 km/h from E, gusts 4 mph6 km/h	56%	67%	0
Fri 8p	Cloudy	47°8° (likely 46°8° to 49°9°)	47°8°	0%	1 mph2 km/h from E, gusts 6 mph9 km/h	65%	75%	0
Fri 9p	Partly cloudy	44°7° (likely 44°7° to 48°9°)	44°7°	0%	1 mph2 km/h from E, gusts 6 mph10 km/h	79%	71%	0
Fri 10p	Partly cloudy	42°6° (likely 42°6° to 48°9°)	42°6°	0%	1 mph2 km/h from E, gusts 7 mph11 km/h	82%	46%	0
Fri 11p	Clear	40°4° (likely 39°4° to 47°8°)	40°4°	0%	1 mph2 km/h from SE, gusts 7 mph11 km/h	85%	42%	0
Sat 12a	Partly cloudy	39°4° (likely 37°3° to 46°8°)	39°4°	0%	0 mph0 km/h, gusts 7 mph11 km/h	85%	37%	0
Sat 1a	Mostly clear	38°3° (likely 36°2° to 45°7°)	38°3°	0%	0 mph0 km/h, gusts 8 mph12 km/h	89%	20%	0
Sat 2a	Mostly clear	36°2° (likely 36°2° to 43°6°)	36°2°	0%	0 mph0 km/h, gusts 7 mph12 km/h	92%	25%	0
Sat 3a	Clear	35°2° (likely 35°2° to 43°6°)	35°2°	0%	0 mph0 km/h, gusts 6 mph10 km/h	96%	10%	0
Sat 4a	Clear	35°2° (likely 35°2° to 41°5°)	35°2°	0%	0 mph0 km/h, gusts 6 mph10 km/h	92%	4%	0
Sat 5a	Clear	34°1° (likely 34°1° to 41°5°)	34°1°	0%	0 mph0 km/h, gusts 6 mph9 km/h	92%	11%	0
Sat 6a	Mostly clear	33°1° (likely 33°1° to 41°5°)	33°1°	0%	1 mph2 km/h from E, gusts 5 mph8 km/h	96%	32%	0
Sat 7a	Sunny	33°1° (likely 33°1° to 41°5°)	33°1°	0%	0 mph0 km/h, gusts 4 mph7 km/h	96%	10%	0
Sat 8a	Mostly sunny	33°1° (likely 33°1° to 41°5°)	33°1°	0%	0 mph0 km/h, gusts 4 mph6 km/h	96%	16%	0
Sat 9a	Mostly sunny	39°4° (likely 39°4° to 45°7°)	39°4°	0%	0 mph0 km/h, gusts 3 mph5 km/h	85%	38%	1
Sat 10a	Sunny	46°8° (likely 46°8° to 52°11°)	46°8°	0%	0 mph0 km/h, gusts 4 mph7 km/h	68%	6%	2
Sat 11a	Sunny	53°12° (likely 53°12° to 55°13°)	53°12°	0%	0 mph0 km/h, gusts 6 mph10 km/h	54%	2%	3
Sat 12p	Sunny	57°14° (likely 55°13° to 57°14°)	57°14°	0%	0 mph0 km/h, gusts 7 mph11 km/h	45%	0%	4
Sat 1p	Sunny	59°15° (likely 56°13° to 59°15°)	59°15°	0%	1 mph2 km/h from S, gusts 6 mph10 km/h	40%	0%	4
Sat 2p	Sunny	60°16° (likely 57°14° to 60°16°)	60°16°	0%	2 mph3 km/h from S, gusts 6 mph10 km/h	39%	0%	4
Sat 3p	Sunny	61°16° (likely 58°14° to 61°16°)	61°16°	0%	2 mph3 km/h from S, gusts 6 mph10 km/h	38%	0%	3
Sat 4p	Sunny	62°17° (likely 57°14° to 62°17°)	62°17°	0%	1 mph2 km/h from S, gusts 6 mph10 km/h	36%	0%	2
Sat 5p	Sunny	60°16° (likely 56°13° to 60°16°)	60°16°	0%	1 mph2 km/h from S, gusts 6 mph9 km/h	41%	0%	1
Sat 6p	Clear	55°13° (likely 52°11° to 55°13°)	55°13°	0%	0 mph0 km/h, gusts 5 mph9 km/h	49%	0%	0
Sat 7p	Clear	50°10° (likely 47°8° to 50°10°)	50°10°	0%	0 mph0 km/h, gusts 4 mph6 km/h	58%	0%	0
Sat 8p	Clear	45°7° (likely 45°7° to 47°8°)	45°7°	0%	0 mph0 km/h, gusts 4 mph7 km/h	73%	0%	0
Sat 9p	Clear	43°6° (likely 43°6° to 46°8°)	43°6°	0%	0 mph0 km/h, gusts 5 mph9 km/h	79%	0%	0
Sat 10p	Clear	42°6° (likely 41°5° to 46°8°)	42°6°	0%	0 mph0 km/h, gusts 5 mph7 km/h	79%	0%	0
Sat 11p	Clear	41°5° (likely 40°4° to 45°7°)	41°5°	0%	0 mph0 km/h, gusts 5 mph9 km/h	82%	0%	0
Sun 12a	Clear	40°4° (likely 40°4° to 45°7°)	40°4°	0%	0 mph0 km/h, gusts 6 mph9 km/h	85%	0%	0
Sun 1a	Clear	39°4° (likely 38°3° to 44°7°)	39°4°	0%	0 mph0 km/h, gusts 6 mph9 km/h	92%	0%	0
Sun 2a	Clear	38°3° (likely 36°2° to 43°6°)	38°3°	0%	0 mph0 km/h, gusts 6 mph10 km/h	92%	0%	0
Sun 3a	Clear	37°3° (likely 36°2° to 43°6°)	37°3°	0%	0 mph0 km/h, gusts 6 mph9 km/h	96%	0%	0
Sun 4a	Clear	36°2° (likely 36°2° to 43°6°)	36°2°	0%	0 mph0 km/h, gusts 5 mph9 km/h	92%	0%	0
Sun 5a	Clear	35°2° (likely 35°2° to 43°6°)	35°2°	0%	0 mph0 km/h, gusts 5 mph8 km/h	92%	0%	0
Sun 6a	Clear	35°2° (likely 35°2° to 42°6°)	35°2°	0%	0 mph0 km/h, gusts 4 mph7 km/h	92%	0%	0
Sun 7a	Sunny	35°2° (likely 34°1° to 41°5°)	35°2°	0%	0 mph0 km/h, gusts 5 mph7 km/h	92%	0%	0
Sun 8a	Sunny	34°1° (likely 33°1° to 42°6°)	34°1°	0%	0 mph0 km/h, gusts 5 mph8 km/h	96%	0%	0
Sun 9a	Sunny	39°4° (likely 36°2° to 46°8°)	39°4°	0%	0 mph0 km/h, gusts 4 mph7 km/h	100%	1%	1
Sun 10a	Sunny	47°8° (likely 45°7° to 52°11°)	47°8°	0%	0 mph0 km/h, gusts 7 mph11 km/h	74%	1%	2
Sun 11a	Sunny	54°12° (likely 50°10° to 55°13°)	54°12°	0%	0 mph0 km/h, gusts 6 mph9 km/h	64%	3%	3
Sun 12p	Sunny	59°15° (likely 54°12° to 59°15°)	59°15°	0%	1 mph2 km/h from SW, gusts 7 mph11 km/h	49%	3%	4
Sun 1p	Sunny	61°16° (likely 57°14° to 61°16°)	61°16°	0%	1 mph2 km/h from SW, gusts 7 mph12 km/h	46%	3%	4
Sun 2p	Sunny	62°17° (likely 59°15° to 62°17°)	62°17°	0%	2 mph3 km/h from SW, gusts 8 mph12 km/h	46%	2%	4
Sun 3p	Sunny	64°18° (likely 60°16° to 64°18°)	64°18°	0%	2 mph3 km/h from SW, gusts 7 mph12 km/h	41%	0%	3

Days ahead

Tap a day for its hours and the official wording.

Today, Oct 23. Cloudy. High 61°16°, low 33°1°. 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, 34°1°
  Dry
Official NWS forecast
Today: Sunny, with a high near 61. Northeast wind around 3 mph.
Tonight: Partly cloudy, with a low around 33. East 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°
Wind
8 mph13 km/h, gusts 18 mph28 km/h
UV peak
4
Tomorrow, Oct 24. Cloudy. High 62°17°, low 34°1°. Dry. Forecasts agree.
1. Morning
  6 AM–noon
  Mostly sunny, 33°1°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 62°17°
  Dry
3. Evening
  6 PM–midnight
  Clear, 45°7°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 35°2°
  Dry
Official NWS forecast
Day: Sunny, with a high near 62. Southeast wind around 2 mph.
Night: Patchy fog after 3am. Clear, with a low around 34. Wind around 0 mph.
Forecasts agreeIndependent forecasts are close; the range is narrow.
High, likely
58°14°–62°17°
Low, likely
34°1°–41°5°
Wind
5 mph8 km/h, gusts 11 mph18 km/h
UV peak
4
Sunday, Oct 25. Sunny. High 64°18°, low 35°2°. Dry. Forecasts agree.
1. Morning
  6 AM–noon
  Sunny, 34°1°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 64°18°
  Dry
3. Evening
  6 PM–midnight
  Clear, 47°8°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 39°4°
  Dry
Official NWS forecast
Day: Areas of fog before 10am. Sunny, with a high near 64. Southwest wind around 2 mph.
Night: Areas of fog after 11pm. Mostly clear, with a low around 35.
Forecasts agreeIndependent forecasts are close; the range is narrow.
High, likely
60°16°–64°18°
Low, likely
32°0°–41°5°
Wind
6 mph10 km/h, gusts 12 mph20 km/h
UV peak
4
Monday, Oct 26. Fog. High 69°21°, low 42°6°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Sunny, 38°3°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 65°18°
  Dry
3. Evening
  6 PM–midnight
  Clear, 53°12°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 48°9°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Areas of fog before 10am. Sunny, with a high near 69.
Night: Mostly clear, with a low around 42.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
64°18°–69°21°
Low, likely
34°1°–42°6°
Wind
7 mph11 km/h, gusts 15 mph24 km/h
UV peak
4
Tuesday, Oct 27. Cloudy. High 64°18°, low 39°4°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Sunny, 45°7°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 61°16°
  Dry
3. Evening
  6 PM–midnight
  Clear, 49°9°
  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 64.
Night: Partly cloudy, with a low around 39.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
58°14°–64°18°
Low, likely
39°4°–46°8°
Wind
9 mph14 km/h, gusts 18 mph29 km/h
UV peak
4
Wednesday, Oct 28. Mostly cloudy. High 62°17°, low 43°6°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Cloudy, 41°5°
  Dry
2. Afternoon
  noon–6 PM
  Cloudy, 58°14°
  Dry
3. Evening
  6 PM–midnight
  Cloudy, 51°10°
  Dry
4. Overnight
  midnight–6 AM
  Partly cloudy, 47°8°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Partly sunny, with a high near 62.
Night: Mostly cloudy, with a low around 43.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
55°13°–62°17°
Low, likely
38°3°–43°6°
Wind
8 mph13 km/h, gusts 19 mph30 km/h
UV peak
3
Thursday, Oct 29. Partly sunny. High 68°20°, low 46°8°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Cloudy, 48°9°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 64°18°
  Dry
3. Evening
  6 PM–midnight
  Clear, 56°13°
  Dry
4. Overnight
  midnight–6 AM
  Mostly clear, 48°9°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Mostly sunny, with a high near 68.
Night: Partly cloudy, with a low around 46.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
62°17°–68°20°
Low, likely
42°6°–49°9°
Wind
10 mph16 km/h, gusts 24 mph38 km/h
UV peak
4
Friday, Oct 30. Cloudy. High 66°19°, low 46°8°. Dry. Forecasts differ.
1. Morning
  6 AM–noon
  Partly sunny, 46°8°
  Dry
2. Afternoon
  noon–6 PM
  Mostly sunny, 64°18°
  Dry
3. Evening
  6 PM–midnight
  Clear, 53°12°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 45°7°
  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
60°16°–69°21°
Low, likely
43°6°–50°10°
Wind
7 mph12 km/h, gusts 21 mph33 km/h
UV peak
3
Saturday, Oct 31. Cloudy. High 63°17°, low 45°7°. Dry. Forecasts differ.
1. Morning
  6 AM–noon
  Sunny, 44°7°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 61°16°
  Dry
3. Evening
  6 PM–midnight
  Cloudy, 51°11°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 45°7°
  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
52°11°–68°20°
Low, likely
41°5°–51°11°
Wind
9 mph14 km/h, gusts 23 mph37 km/h
UV peak
3
Sunday, Nov 1. Cloudy. High 60°16°, low 46°8°. Rain 0.03 in0.8 mm, 30% chance. Forecasts differ.
1. Morning
  6 AM–noon
  Cloudy, 45°7°
  20% chance
2. Afternoon
  noon–6 PM
  Fog, 58°15°
  30% chance
3. Evening
  6 PM–midnight
  Drizzle, 55°13°
  30% 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°–66°19°
Low, likely
37°3°–52°11°
Wind
9 mph14 km/h, gusts 27 mph43 km/h
UV peak
1

10 days15 days30 days

The outlook

Today
Dry, high 61°, low 33°.
Tomorrow
Dry, high 62°, low 34°.
Sunday
Dry, high 64°, low 35°.
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

13 mi

Below flood stage

Level: 0.7 ft
Flow: 229 cfs

Forecast peak 0.7 ft Fri 8 PM

Reading from Fri 3:15 PM · NWS gauge page

Swatara Creek near Hershey

18 mi

Below flood stage

Level: 1.9 ft
Flow: 333 cfs

Forecast peak 1.9 ft Sat 2 AM

Reading from Fri 3:45 PM · NWS gauge page

Susquehanna River at Sunbury

20 mi

Below flood stage

Level: 7.3 ft
Flow: 8,620 cfs

Forecast peak 7.2 ft Fri 8 PM

Reading from Fri 3:45 PM · NWS gauge page

Juniata River at Newport

23 mi

Below flood stage

Level: 4.0 ft
Flow: 1,660 cfs

Forecast peak 4.5 ft Sun 8 PM

Reading from Fri 3:15 PM · NWS gauge page

Sun & moon

Sun

Daylight: 10 h 48 min; Losing 2 min 30 s a day; shortest Dec 21, 1 h 32 min less
Golden hour: 5:37–6:32 PM; Morning 7:09–8:04 AM
Blue hour: 6:32–6:42 PM; Morning 6:58–7:09 AM; first light 6:58 AM

Stars tonight? Fair

Mostly clear 3–6 AM, but the moon is 95% lit and up.

Moon

Waxing gibbous

93% lit · growing

Today: sets 4:30 AM · rises 4:46 PM
Full moon: Oct 26
New moon: Nov 9

Looking east from Lykens. The highest point on the skyline is about 1,800 ft, 5 mi away.Skyline from USGS elevation data, heights drawn up to 2.5× taller. Sky, sun and moon as they are now.

Lykens, 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

Susquehanna River at Sunbury

Juniata River at Newport

Sun & moon

Sun

Stars tonight? Fair

Moon