Weather forecast for 10 days
Harmonsburg, PA

Weather forecast for the weekend

Saturday, Jun 21.

AM Clouds / PM Sun
5:45 am

9:00 pm
EDT
AM Clouds / PM Sun
86°F / 72°F
  • Wind: 12mph SSW
  • Humidity: 64%
  • Precip. probability: 13%
  • Precipitation: 0"
  • UV index: 7
On Saturday, June 21, expect a cloudy morning, but by midday, the sun will begin to shine through.
Rainfall is not predicted. Temperatures are expected to range from a maximum of a humid 86°F to a minimum of a pleasant 71.6°F.
On Saturday, it will be hotter with a forecast high that reflects July's climate of 79.3°F.
Sunrise will be at 5:45 am and sunset at 9:00 pm; the daylight will last for 15h and 16min.

Sunday, Jun 22.

Sunny
5:45 am

9:01 pm
EDT
Sunny
91°F / 73°F
  • Wind: 9mph WSW
  • Humidity: 63%
  • Precip. probability: 10%
  • Precipitation: 0"
  • UV index: 9
On Sunday, June 22, a sun-drenched sky is anticipated.
Rainfall is not expected. Temperatures are forecasted to peak at a hot 91.4°F and drop to a minimum of a moderately hot 73.4°F.
Forecast models suggest hotter conditions, with a peak that mirrors July's climate average rather than June's.
Sunrise will be at 5:45 am and sunset at 9:01 pm; the daylight will last for 15h and 16min.

Frequently asked questions

What is the weather forecast for Harmonsburg for Saturday?
On Saturday, in Harmonsburg, the morning will be cloudy, but expect sunshine as the day progresses.
Will it rain on Saturday?
No, it will not rain on Saturday in Harmonsburg.
What will be the highest temperature on Saturday?
On Saturday, the highest temperature will be 86°F, while the lowest temperature will be 71.6°F.
What is the weather forecast for Harmonsburg for Sunday?
On Sunday, in Harmonsburg, the forecast calls for abundant sunshine.
Will it rain on Sunday?
No, it will not rain on Sunday.
What will be the highest temperature on Sunday in Harmonsburg?
On Sunday, the highest temperature will be 91.4°F, while the lowest temperature will be 73.4°F.
What is the weather forecast for Harmonsburg for the next ten days?
In Harmonsburg, a combination of lightning-active, dry and sunny and cloudy weather is forecasted for the next ten days.
Will it rain in the next ten days?
Rainfall is expected on Wednesday, Thursday, next Wednesday through next Friday in Harmonsburg. The days with the most rainfall will be Thursday and next Friday, with light precipitation of 0.31".
How hot will it be in the next ten days?
The maximum temperature will vary between 71.6°F and 91.4°F, as the minimum temperature will range between 59°F and 73.4°F.
Including the humidity's impact, the maximum feel-like temperature will vary between 71.6°F and 105.8°F.
What will be the hottest and the coldest days in Harmonsburg?
The hottest days will be Sunday through Tuesday, with a maximum of 91.4°F. The coldest day will be tomorrow, with a maximum of 71.6°F.

Long-term weather forecast

WedJun 18.
  • min.
  • 68°F
Thunderstorms
Thunderstorms
  • Wind: 12mph SSW
  • Humidity: 90%
  • UV index: 0
  • Precip. probability: 100%
  • Precipitation: 0.2"
  • 5:44 am 9:00 pm EDT
ThuJun 19.
  • 72°F
  • 59°F
Scattered Thunderstorms
Scattered Thunderstorms
  • Wind: 14mph WSW
  • Humidity: 81%
  • UV index: 6
  • Precip. probability: 70%
  • Precipitation: 0.31"
  • 5:45 am 9:00 pm EDT
FriJun 20.
  • 81°F
  • 66°F
Partly Cloudy
Partly Cloudy
  • Wind: 11mph W
  • Humidity: 69%
  • UV index: 9
  • Precip. probability: 16%
  • Precipitation: 0"
  • 5:45 am 9:00 pm EDT
SatJun 21.
  • 86°F
  • 72°F
AM Clouds / PM Sun
AM Clouds / PM Sun
  • Wind: 12mph SSW
  • Humidity: 64%
  • UV index: 7
  • Precip. probability: 13%
  • Precipitation: 0"
  • 5:45 am 9:00 pm EDT
SunJun 22.
  • 91°F
  • 73°F
Sunny
Sunny
  • Wind: 9mph WSW
  • Humidity: 63%
  • UV index: 9
  • Precip. probability: 10%
  • Precipitation: 0"
  • 5:45 am 9:01 pm EDT
MonJun 23.
  • 91°F
  • 73°F
Sunny
Sunny
  • Wind: 8mph WSW
  • Humidity: 62%
  • UV index: 9
  • Precip. probability: 6%
  • Precipitation: 0"
  • 5:46 am 9:01 pm EDT
TueJun 24.
  • 91°F
  • 72°F
Mostly Sunny
Mostly Sunny
  • Wind: 8mph W
  • Humidity: 65%
  • UV index: 9
  • Precip. probability: 20%
  • Precipitation: 0"
  • 5:46 am 9:01 pm EDT
WedJun 25.
  • 90°F
  • 70°F
Isolated Thunderstorms
Isolated Thunderstorms
  • Wind: 7mph WSW
  • Humidity: 67%
  • UV index: 9
  • Precip. probability: 33%
  • Precipitation: 0.08"
  • 5:46 am 9:01 pm EDT
ThuJun 26.
  • 81°F
  • 68°F
Scattered Thunderstorms
Scattered Thunderstorms
  • Wind: 8mph W
  • Humidity: 77%
  • UV index: 8
  • Precip. probability: 38%
  • Precipitation: 0.16"
  • 5:47 am 9:01 pm EDT
FriJun 27.
  • 82°F
  • 68°F
Scattered Thunderstorms
Scattered Thunderstorms
  • Wind: 8mph SW
  • Humidity: 76%
  • UV index: 8
  • Precip. probability: 45%
  • Precipitation: 0.31"
  • 5:47 am 9:01 pm EDT
Looking ahead, conditions suggest a period of unstable, sun-filled and overcast weather is predicted.
Rainfall is expected on Wednesday, Thursday, next Wednesday through next Friday. The days with the most rainfall will be Thursday and next Friday, with light precipitation of 0.31".
The temperature will vary considerably in the coming days. Maximum temperatures are forecasted between 71.6°F and 91.4°F, while the lowest nightly temperature differences will be also quite pronounced, as nighttime lows are forecast to fall between 59°F and 73.4°F.
Sunday through Tuesday, with the highest temperature of 91.4°F, will be the hottest days in Harmonsburg; with the highest temperature of 71.6°F, Thursday will be the coldest day.
Combining with the humidity, the maximum feel-like temperature may increase substantially and vary between 71.6°F and a blistering 105.8°F.
Updated: Jun 19, 2025 @ 02:56:08 UTC
Published by: Weather U.S. | About Us
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