Today
Expect clear. Daytime high +59°, overnight low +36°. Light wind, up to 3 mph. No rain expected.
Weather in Harrisburg
United States · Pennsylvania · 40.2737, -76.8844
Today Now 5:20 AM
+37° Clear
Hourly forecast
Today10/18
Temperature°F
Cloudiness
Precipitation
Windmph
Wind gusts
Humidity
PressureinHg
Dew point°F
Visibilitymi
UV index
Forecast in words
Tomorrow
Tomorrow high +64° and clear, nighttime low +39°, 5° warmer.
Week
This week temperatures range from +36° to +64°. Weekly maximum — +64° (Mon). Nighttime weekly low: +36° (Sun). No rain in the forecast. Cloudless weather for 8 days. Second half of the week is cooler.
Week vs norm
- Today 10/18 +59° −5° usually +64°
- Tomorrow 10/19 +64° as usual usually +64°
- Tue 10/20 +64° +1° usually +63°
- Wed 10/21 +61° −2° usually +63°
- Thu 10/22 +63° as usual usually +62°
- Fri 10/23 +61° −1° usually +62°
- Sat 10/24 +59° −2° usually +61°
- Sun 10/25 +41° −20° usually +61°
Difference between forecast daytime high and the 1991–2020 norm for this date.
This day, October 18
Today is cooler than usual for this date.
- Heat record +84° 2016
- Cold record +34° 1992
- Most precipitation 0.4 in 2009
- Strongest gust 36 mph 1999
Records for this calendar date, 1991-2024, ERA5 reanalysis.
Climate in Harrisburg
Today is about 7° colder than usual for October.
| Month | Daytime / Nighttime | Average | Precipitation in |
|---|---|---|---|
| Jan | +37° / +25° | +30° | 3.5 |
| Feb | +41° / +25° | +32° | 3.0 |
| Mar | +50° / +33° | +40° | 3.9 |
| Apr | +62° / +43° | +51° | 3.8 |
| May | +72° / +53° | +61° | 3.8 |
| Jun | +80° / +62° | +71° | 3.6 |
| Jul | +85° / +68° | +76° | 3.7 |
| Aug | +83° / +66° | +74° | 3.3 |
| Sep | +77° / +60° | +67° | 4.4 |
| Oct | +65° / +48° | +55° | 3.5 |
| Nov | +53° / +38° | +44° | 3.1 |
| Dec | +42° / +30° | +35° | 3.7 |
Climatic normals for 1991–2025 years from ERA5-Land reanalysis.
Astronomical data
Sunrise / sunset
7:21 AM | 6:22 PM
Moon
2:41 PM | —
Moon phase
First quarter 50%
Next solar eclipse
Calculating for this city…