Weather forecast for tomorrow
Harmonsburg, PA

Weather forecast for tomorrow

Wednesday, Jun 18.

PM Thunderstorms
5:44 am

9:00 pm
EDT
PM Thunderstorms
81°F / 68°F
  • Wind: 8mph SW
  • Humidity: 82%
  • Precip. probability: 70%
  • Precipitation: 0.59"
  • UV index: 7
Tomorrow, scattered thunderstorms are also likely by the afternoon.
The chance of rainfall is high, and precipitation will be moderate. The maximum temperature will be a temperate 80.6°F, while the minimum predicted temperature is a pleasant 68°F.
The maximum heat index, which measures the combined effect of heat and moisture, is evaluated at a hot 86°F. Note that heat index values are valued for light wind and location in the shade.
The forecasted temperature of 80.6°F resembles July's typical high of 79.3°F more than June's.
Sunrise will be at 5:44 am and sunset at 9:00 pm; tomorrow's daylight will last for 15h and 15min.

Frequently asked questions

What is the weather forecast for Harmonsburg for tomorrow?
Tomorrow, in Harmonsburg, rain with scattered lightning is expected during the afternoon.
Will it rain tomorrow?
Moderate precipitation of 0.59" is anticipated. The chance of rainfall is 70%.
What will be the highest temperature tomorrow?
Tomorrow, the highest temperature will be 80.6°F, while the lowest temperature will be 68°F. The maximum heat index, which reflects the perceived temperature due to humidity levels, is computed to be 86°F.
The highest temperature will be a couple of degrees higher than the average maximum of 74.3°F in June. The lowest temperature will be significantly higher than the average low of 55.8°F.
When is the sunrise / sunset tomorrow?
On Wednesday, in Harmonsburg, sunrise will be at 5:44 am and sunset at 9:00 pm (EDT).
How many hours of daylight will Harmonsburg have tomorrow?
In Harmonsburg, the length of the day tomorrow will be 15h and 15min.

Hourly weather forecast

12 am
  • 70°F
  • Feels like:
    70°F
Mostly Cloudy
Mostly Cloudy
  • Wind: 4mph SSW
  • Pressure: 29.83"Hg
  • Humidity: 94%
  • Precip. probability: 7%
  • Precipitation: 0"
  • Visibility: 5mi
2 am
  • 70°F
  • Feels like:
    72°F
Cloudy
Cloudy
  • Wind: 4mph SSW
  • Pressure: 29.83"Hg
  • Humidity: 97%
  • Precip. probability: 13%
  • Precipitation: 0"
  • Visibility: 5mi
4 am
  • 68°F
  • Feels like:
    72°F
Cloudy
Cloudy
  • Wind: 5mph SSW
  • Pressure: 29.83"Hg
  • Humidity: 98%
  • Precip. probability: 23%
  • Precipitation: 0"
  • Visibility: 2mi
Sunrise: 5:44 am
6 am
  • 68°F
  • Feels like:
    72°F
Cloudy
Cloudy
  • Wind: 4mph SSW
  • Pressure: 29.83"Hg
  • Humidity: 98%
  • Precip. probability: 15%
  • Precipitation: 0"
  • Visibility: 2mi
8 am
  • 70°F
  • Feels like:
    72°F
Cloudy
Cloudy
  • Wind: 4mph SSW
  • Pressure: 29.85"Hg
  • Humidity: 95%
  • Precip. probability: 22%
  • Precipitation: 0"
  • Visibility: 4mi
10 am
  • 73°F
  • Feels like:
    75°F
Cloudy
Cloudy
  • Wind: 6mph SW
  • Pressure: 29.85"Hg
  • Humidity: 87%
  • Precip. probability: 24%
  • Precipitation: 0"
  • Visibility: 5mi
12 pm
  • 77°F
  • Feels like:
    81°F
Cloudy
Cloudy
  • Wind: 7mph SW
  • Pressure: 29.85"Hg
  • Humidity: 81%
  • Precip. probability: 24%
  • Precipitation: 0"
  • Visibility: 7mi
2 pm
  • 79°F
  • Feels like:
    82°F
Mostly Cloudy
Mostly Cloudy
  • Wind: 7mph SW
  • Pressure: 29.83"Hg
  • Humidity: 74%
  • Precip. probability: 22%
  • Precipitation: 0"
  • Visibility: 10mi
4 pm
  • 81°F
  • Feels like:
    84°F
Showers
Showers
  • Wind: 7mph SW
  • Pressure: 29.8"Hg
  • Humidity: 71%
  • Precip. probability: 46%
  • Precipitation: 0.04"
  • Visibility: 7mi
6 pm
  • 77°F
  • Feels like:
    81°F
Mostly Cloudy
Mostly Cloudy
  • Wind: 6mph SSW
  • Pressure: 29.8"Hg
  • Humidity: 79%
  • Precip. probability: 24%
  • Precipitation: 0"
  • Visibility: 10mi
8 pm
  • 77°F
  • Feels like:
    81°F
Scattered Thunderstorms
Scattered Thunderstorms
  • Wind: 7mph S
  • Pressure: 29.8"Hg
  • Humidity: 81%
  • Precip. probability: 39%
  • Precipitation: 0.04"
  • Visibility: 7mi
Sunset: 9:00 pm
10 pm
  • 73°F
  • Feels like:
    75°F
Mostly Cloudy
Mostly Cloudy
  • Wind: 6mph S
  • Pressure: 29.8"Hg
  • Humidity: 86%
  • Precip. probability: 24%
  • Precipitation: 0"
  • Visibility: 9mi
Tomorrow, a combination of primarily dull and occasionally rainy and unstable weather is predicted.
Rainfall is forecasted at 3 am, 9 am, and from 3 pm to 5 pm, 7 pm, 8 pm and at 11 pm. With moderate precipitation of 0.2", most rainfall is expected at 5 pm.
The temperature will vary between a minimum of 68°F and a maximum of 80.6°F. The warmest part of the day will be at 3 pm and 4 pm.
The forecasted high is more resembling July's typical maximum of 79.3°F than the usual for June. The lowest temperature is also more resembling July's average minimum of 61°F than the usual minimum of 55.8°F in June.
Updated: Jun 17, 2025 @ 22:25:02 UTC
Published by: Weather U.S. | About Us
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