Irwin, OH Weather Forecast & Alerts

Current conditions, 5-day forecast, and active NWS weather alerts for Irwin, OH.

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Current Conditions — Irwin, OH

URBANA (KI74)

Clear

55.4 F
Humidity:38%
Wind Speed: 11.5 G 17.3 mph
Barometer:30.18 in
Dewpoint:30.2 F
Visibility:10.00 mi
Precip:--
Heat Index:NA
Wind Chill:NA
Apr 21 2026, 10:35 AM EDT
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5-Day Forecast — Irwin, OH

Tuesday

High 75 °F
Mostly Cloudy
Tuesday
Night
Low 55 °F
T-storms Likely
Wednesday

High 73 °F
Chance of T-storms
Wednesday
Night
Low 55 °F
Mostly Clear
Thursday

High 78 °F
Partly Sunny
Thursday
Night
Low 57 °F
Partly Cloudy
Friday

High 80 °F
Chance of Rain Showers
Friday
Night
Low 57 °F
T-storms Likely
Saturday

High 75 °F
Chance of T-storms

Detailed Forecast — Irwin, OH

Tuesday
Mostly Cloudy. High near 75°F. Wind 9 to 22 mph, with gusts as high as 33 mph.
Tuesday Night
Thunderstorms Likely. Low around 55°F. Wind 10 to 16 mph, with gusts as high as 23 mph.
Wednesday
Chance of Thunderstorms. High near 73°F. Wind 8 to 10 mph, with gusts as high as 20 mph.
Wednesday Night
Mostly Clear. Low around 55°F. Wind 2 to 6 mph, with gusts as high as 12 mph.
Thursday
Partly Sunny. High near 78°F. Wind 3 to 8 mph, with gusts as high as 14 mph.
Thursday Night
Partly Cloudy. Low around 57°F. Wind 5 to 6 mph, with gusts as high as 13 mph.
Friday
Chance of Rain Showers. High near 80°F. Wind 7 to 15 mph, with gusts as high as 23 mph.
Friday Night
Thunderstorms Likely. Low around 57°F. Wind 6 to 8 mph, with gusts as high as 17 mph.
Saturday
Chance of Thunderstorms. High near 75°F. Wind 6 to 9 mph, with gusts as high as 16 mph.
Saturday Night
Chance of Showers. Low around 50°F. Wind 6 to 7 mph, with gusts as high as 14 mph.
Sunday
Chance of Rain Showers. High near 71°F. Wind 6 to 9 mph, with gusts as high as 16 mph.
Sunday Night
Chance of Rain. Low around 51°F. Wind 6 to 8 mph, with gusts as high as 15 mph.
Monday
Chance of Thunderstorms. High near 71°F. Wind 7 to 13 mph, with gusts as high as 20 mph.
OH Radar
Current Radar • OH
Day 1 Outlook • April 21, 2026

Observation History — Irwin, OH

Time Wind
(mph)		 Vis
(mi)		 Weather Precip (in) Temperature (F) Relative
Humidity		 Wind
Chill
(F)		 Heat
Index
(F)		 Pressure
Air Dwpt altimeter
(in)		 sea level
(mb)
10:35 AM EDT 11.5 G 17.3 10.00 Clear -- 55.4 30.2 38% NA NA 30.18 1022.0
10:15 AM EDT S 9.2 10.00 Clear -- 53.6 28.4 38% NA NA 30.19 1022.4
09:55 AM EDT 10.00 Clear -- NULL % NA NA M
09:35 AM EDT 10.00 Clear -- NULL % NA NA M
09:15 AM EDT S 5.7 10.00 NULL -- 48.2 26.6 43% 45.7 NA 30.22 1023.4
08:55 AM EDT S 9.2 10.00 Clear -- 46.4 26.6 46% 41.9 NA 30.23 1023.7
08:35 AM EDT S 6.9 10.00 Clear -- 44.6 26.6 49% 40.6 NA 30.24 1024.0
08:15 AM EDT S 5.7 10.00 Partly Cloudy -- 42.8 24.8 49% 39.2 NA 30.24 1024.0
07:35 AM EDT S 8.1 10.00 Cloudy -- 41.0 24.8 52% 35.8 NA 30.23 1023.7
06:35 AM EDT S 5.7 10.00 Partly Cloudy -- 39.2 24.8 56% 35.1 NA 30.24 1024.0
06:15 AM EDT 3.4 10.00 Clear -- 37.4 24.8 60% 34.9 NA 30.23 1023.7
05:55 AM EDT 10.00 Clear -- NULL % NA NA M
05:35 AM EDT S 3.4 10.00 Clear -- 37.4 24.8 60% 34.9 NA 30.24 1024.0
05:15 AM EDT 0.0 10.00 Clear -- 37.4 24.8 60% NA NA 30.24 1024.0
04:35 AM EDT 10.00 Clear -- NULL % NA NA M
04:15 AM EDT 0.0 10.00 Clear -- 37.4 26.6 65% NA NA 30.25 1024.4
03:55 AM EDT 10.00 Clear -- NULL % NA NA M
03:35 AM EDT 10.00 Clear -- NULL % NA NA M
03:15 AM EDT 0.0 10.00 Clear -- 37.4 24.8 60% NA NA 30.25 1024.4
02:35 AM EDT 0.0 10.00 Clear -- 41.0 24.8 52% NA NA 30.26 1024.7
02:15 AM EDT 0.0 10.00 NULL -- 41.0 23.0 48% NA NA 30.25 1024.4
01:35 AM EDT 0.0 10.00 Clear -- 41.0 23.0 48% NA NA 30.26 1024.7
01:15 AM EDT 0.0 10.00 Clear -- 41.0 23.0 48% NA NA 30.26 1024.7
12:55 AM EDT 0.0 10.00 Clear -- 41.0 23.0 48% NA NA 30.26 1024.7

Regional Weather Observation

URBANA (KI74)

Clear
55.4 F

BELLEFONTAINE (KEDJ)

Clear
59.0 F

MARYSVILLE (KMRT)

Clear
57.2 F

DELAWARE (KDLZ)

Clear
55.4 F

COLUMBUS/ST UNIV (KOSU)

Clear
57.2 F

MARION (KMNN)

Clear
55.4 F
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