THE NATIONAL WEATHER SERVICE HAS EXTENDED SEVERE THUNDERSTORM WATCH 564 TO INCLUDE THE FOLLOWING AREAS UNTIL 2 PM EDT THIS AFTERNOON IN OHIO THIS WATCH INCLUDES 2 COUNTIES IN CENTRAL OHIO FRANKLIN PICKAWAY THIS INCLUDES THE CITIES OF CIRCLEVILLE AND DOWNTOWN COLUMBUS.
Local weather forecast
Weather in Johnstown, OH
Updated 2026-08-11 13:45 local time · ZIP codes 43031
Now71°F
Cloudy
High / Low87° / 68°
Rain chance83%
Wind12 mph
Weather alerts
5Active alerts
* WHAT...Flooding caused by excessive rainfall is expected. * WHERE...Fairfield County in central Ohio... Eastern Franklin County in central Ohio... Hocking County in central Ohio... Licking County in central Ohio... Eastern Pickaway County in central Ohio... Northeastern Ross County in south central Ohio... * WHEN...Until 145 PM EDT. * IMPACTS...Minor flooding in low-lying and poor drainage areas. Water over roadways. * ADDITIONAL DETAILS... - At 1050 AM EDT, radar indicated heavy rain due to thunderstorms. Minor flooding is ongoing or expected to begin shortly in the advisory area. Between 1 and 1.5 inches of rain have fallen. Additional rainfall amounts of 1 to 1.5 inches are possible. - Some locations that may experience flooding include... Columbus, Newark, Lancaster, Westerville, Reynoldsburg, Gahanna, Pickerington, Circleville, Bexley, Heath, Logan, Granville, Pataskala, Canal Winchester, Groveport and Ashville.
Safety instructions
Keep children away from storm drains, culverts, creeks and streams. Water levels can rise rapidly and sweep children away. Be aware of your surroundings and do not drive on flooded roads. To report flooding, go to our website at weather.gov/iln and submit your report via social media, when you can do so safely.
THE NATIONAL WEATHER SERVICE HAS EXTENDED SEVERE THUNDERSTORM WATCH 564 TO INCLUDE THE FOLLOWING AREAS UNTIL 2 PM EDT THIS AFTERNOON IN OHIO THIS WATCH INCLUDES 3 COUNTIES IN CENTRAL OHIO FAIRFIELD HOCKING LICKING THIS INCLUDES THE CITIES OF LANCASTER, LOGAN, NEWARK, AND PICKERINGTON.
FFWRLX The National Weather Service in Charleston has issued a * Flash Flood Warning for... Northwestern Perry County in southeastern Ohio... * Until 330 PM EDT. * At 1106 AM EDT, Doppler radar indicated thunderstorms producing heavy rain across the warned area. Between 1 and 1.5 inches of rain have fallen. Additional rainfall amounts up to 1 inch are possible in the warned area. Flash flooding is ongoing or expected to begin shortly. HAZARD...Flash flooding caused by thunderstorms. SOURCE...Radar indicated. IMPACT...Flash flooding of small creeks and streams, urban areas, highways, streets and underpasses as well as other poor drainage and low-lying areas. This area received between 3 and 4.5 inches of rain overnight. This additional rainfall will exacerbate the ongoing flooding situation. Jonathan Creek is likely out of its banks and flooding adjacent roads and low-lying locations between Thornville and Yost. * Some locations that will experience flash flooding include... Thornville and Glenford.
Safety instructions
Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles. Report flooding to the National Weather Service by calling toll free, 800 401 9535, when you can do so safely.
* WHAT...Flooding caused by excessive rainfall continues. * WHERE...Northwestern Perry County in southeastern Ohio... * WHEN...Until 330 PM EDT Tuesday. * IMPACTS...Flooding of rivers, creeks, streams, and other low-lying and flood-prone locations is imminent or occurring. Jonathan Creek is likely out of its banks and flooding adjacent roads and low-lying locations between Thornville and Yost. * ADDITIONAL DETAILS... - At 854 AM EDT, Doppler radar indicated between 3 and 4.5 inches of rain have fallen from the thunderstorms that moved across the area last night. - Some locations that will experience flooding include... Thornville and Glenford. - http://www.weather.gov/safety/flood
Safety instructions
Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles. Report flooding to the National Weather Service by calling toll free, 800 401 9535, when you can do so safely.
Hourly
Next hours
Now71°9% rain
71°9% rain3 PM
87°7% rain
87°7% rain4 PM
84°22% rain
84°22% rain5 PM
72°87% rain
72°87% rain6 PM69°85% rain
69°85% rain7 PM
75°68% rain
75°68% rain8 PM
69°31% rain
69°31% rain9 PM
69°26% rain
69°26% rain10 PM68°42% rain
68°42% rain11 PM68°31% rain
68°31% rain12 AM
68°22% rain
68°22% rain1 AM
64°42% rain
64°42% rainForecast
3-day weather forecast
Today2026-08-11
87° 68°Patchy rain nearby
Rain 83%Gust 26 mph
Tomorrow2026-08-12
75° 63°Mist
Rain 89%Gust 8 mph
Thursday2026-08-13
81° 63°Fog
Rain 24%Gust 6 mph
Conditions
Weather details
Feels like71°F
Humidity83%
Pressure29.94 inHg
Visibility10 mi
Wind12 mph SW
Wind gusts24 mph
Precipitation0.00 in
UV index4
Daylight
Sunrise, sunset and moon
Sunrise06:38 AM
Sunset08:33 PM
Moonrise04:38 AM
Moon phaseNew Moon
Practical guide
Weather insights for today
Take an umbrella
Rain chance reaches about 87% over the next 12 hours.
Light layers should work
It feels like 71°F with winds near 12 mph.
Best window: 2 PM
86°F, 7% rain chance and 13 mph wind.
Use extra caution while driving
Visibility is around 10 mi; gusts may reach 46 mph.
Running conditions are less comfortable
Current temperature is 71°F, wind 12 mph, rain chance up to 87%.
Moderate UV protection recommended
UV index is 4. Sunscreen and sunglasses are sensible for longer outdoor time.
Johnstown weather today
Cloudy and 71°F in Johnstown, OH. Today's high is 87°F with a 83% rain chance. Winds are around 12 mph with gusts near 24 mph. Relative humidity is 83%, pressure is 29.94 inHg, and visibility is about 10 miles.
Tonight and tomorrow in Johnstown
Sunrise is at 06:38 AM and sunset is at 08:33 PM. Tomorrow's forecast calls for Mist with a high near 75°F and a low near 63°F. The maximum rain chance is 89%.
Nearby
Weather near Johnstown
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