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When does the first frost occur in Central PA? See when the first 36 degree temperatures typically occur.
A 5th tornado has been determined to have occurred in Central PA (Burnside Twp in northern Centre County) on July 18th, 2026. See details.
See information on the Cyclone (PA) Tornado of Sept 9th, 2026

Current conditions at

Jamestown, Chautauqua County/Jamestown Airport (KJHW)

Lat: 42.15° N Lon: 79.27° W Elev: 1722 ft.

Overcast

58°F

14°C

Humidity	100%
Wind Speed	SW 3 mph
Barometer	30.11 in (1020.0 mb)
Dewpoint	58°F (14°C)
Visibility	10.00 mi
Last update	29 Sep 8:56 am EDT

More Information:

Local Forecast Office More Local Wx 3 Day History Hourly Weather Forecast

Detailed forecast for

Warren County

Today

Areas of fog this morning. Mostly cloudy. Highs around 70. Light and variable winds, becoming northwest around 5 mph this afternoon.

Tonight

Mostly cloudy. Areas of fog in the evening. Patchy fog after midnight. Lows in the lower 50s. Light and variable winds, becoming south around 5 mph after midnight.

Wednesday

Partly sunny in the morning, then becoming mostly cloudy. Patchy fog in the morning. Highs in the mid 70s. South winds around 5 mph.

Wednesday Night

Mostly cloudy. Lows in the upper 50s. South winds around 5 mph.

Thursday

Partly sunny. Highs in the upper 70s. Southwest winds 5 to 10 mph with gusts up to 20 mph.

Thursday Night

Mostly cloudy. Lows in the upper 50s.

Friday

Showers likely. Highs in the lower 70s. Chance of rain 70 percent.

Friday Night

Mostly cloudy. Showers likely, mainly in the evening. Cooler with lows in the mid 40s. Chance of rain 70 percent.