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Harrisburg, IN Weather Tomorrow

The extended forecast for Harrisburg begins with tomorrow's weather and continues through the next 5 days with daily precipitation forecasts, changing sky conditions, daytime highs, overnight lows, Fahrenheit and Celsius temperatures, sunrise, sunset, wind chill, and local wind details for the Harrisburg area and around Fayette county, Indiana.
Updated: Tue Aug 18th 2026 5:00 AM EDT
Harrisburg, IN Weather – 8-18 – Scattered Showers
83° / 62°
Scattered Showers
Daytime highs will reach 83°F with lows dropping to 62°F in Harrisburg, where showers likely at times. The chance of rain is 82% with an estimated 1.66in. Winds will be light at 7mph and gusts of 9.4mph at 9 AM. The humidity will be on the higher side, averaging about 78%, the maximum being 91% at 11 PM and 59% being its lowest at 1 PM. Barometric pressure is its highest of 30.05inHg at 9 AM, a lowest point of 29.96inHg at 11 PM with an avg 30.01inHg.
Harrisburg, IN Weather – 8-19 – Scattered Showers
74° / 64°

Weather Tomorrow

Scattered Showers
On and off showers are set to occur in Harrisburg, with a high of 74°F and a low of 64°F. The chance of rain is 81% with an estimated 0.12in. Winds will be light at 6mph and gusts of 14.1mph at 9 AM. High humidity with average of 89% is anticipated, the maximum being 97% at 9 AM and 77% being its lowest at 3 PM. Barometric pressure is its highest of 29.98inHg at 8 AM, a lowest point of 29.92inHg at 6 PM with an avg 29.95inHg.
Harrisburg, IN Weather – 8-20 – Overcast
74° / 64°
Overcast
In Harrisburg, overcast is likely with a high near 74°F and a low around 64°F. There's a moderate 34% chance of rainfall with an estimated 0.01in. Winds will be light at 10mph and gusts of 22.4mph at 10 PM. High humidity with average of 86% is anticipated, the maximum being 97% at 7 AM and 68% being its lowest at 3 PM. Barometric pressure is its highest of 30.04inHg at 11 PM, a lowest point of 29.95inHg at 1 AM with an avg 30inHg.
Harrisburg, IN Weather – 8-21 – Sunny
74° / 60°
Sunny
Bright and sunny conditions in Harrisburg, with a high of 74°F and a low of 60°F. There's a very small chance of rainfall, only about 8%. Winds will be light at 9mph and gusts of 18.1mph at 12 AM. The humidity will be on the higher side, averaging about 75%, the maximum being 94% at 12 AM and 59% being its lowest at 4 PM. Barometric pressure is its highest of 30.09inHg at 8 AM, a lowest point of 29.97inHg at 9 PM with an avg 30.05inHg.
Harrisburg, IN Weather – 8-22 – Sunny
75° / 60°
Sunny
Highs will reach 75°F with lows near 60°F in Harrisburg, where sunshine is. There's a very small chance of rainfall, only about 10%. Winds will be light at 8mph and gusts of 10.7mph at 3 AM. The humidity will be on the higher side, averaging about 80%, the maximum being 94% at 11 PM and 59% being its lowest at 2 PM. Barometric pressure is its highest of 30.02inHg at 1 AM, a lowest point of 29.95inHg at 9 PM with an avg 29.98inHg.
Harrisburg, IN Weather – 8-23 – Sunny
71° / 63°
Sunny
Daytime highs will reach 71°F with lows dropping to 63°F in Harrisburg, where bright and sunny conditions. There might be light rainfall having a 14% chance. Winds will be light at 10mph and gusts of 18.1mph at 5 PM. High humidity with average of 84% is anticipated, the maximum being 96% at 4 AM and 69% being its lowest at 5 PM. Barometric pressure is its highest of 30.09inHg at 11 PM, a lowest point of 29.97inHg at 12 AM with an avg 30.03inHg.

Currently

Patchy Rain Nearby 64°F
30.03 inHg.
Barometer
85%
Humidity
NNW 10.1 mph
Wind
Patchy Rain Nearby

5 Day Forecast Nearby

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