Hazardous Weather Conditions
Current conditions at
Ottumwa Regional Airport (KOTM)
Lat: 41.1°NLon: 92.44°WElev: 830ft.
Fair
86°F
30°C
| Humidity | 75% |
| Wind Speed | W 5 mph |
| Barometer | 29.90 in (1011.5 mb) |
| Dewpoint | 77°F (25°C) |
| Visibility | 10.00 mi |
| Heat Index | 97°F (36°C) |
| Last update | 26 Jul 10:53 am CDT |
Extended Forecast for
4 Miles S Martinsburg IA
Extreme Heat Watch July 26, 09:00pm until July 27, 10:00pm
Extreme Heat Warning July 26, 12:00pm until July 26, 09:00pm
Today

High: 97 °F
Hot
Tonight
Low: 77 °F
Partly Cloudy
then Slight
Chance
T-stormsMonday

High: 97 °F
Hot
Monday Night

Low: 73 °F
Mostly Clear
Tuesday

High: 90 °F
Mostly Sunny
Tuesday Night

Low: 68 °F
Partly Cloudy
Wednesday

High: 90 °F
Sunny
Wednesday Night

Low: 67 °F
Mostly Clear
Thursday

High: 89 °F
Mostly Sunny
Detailed Forecast
Today
Mostly sunny and hot, with a high near 97. Heat index values as high as 114. West wind 7 to 9 mph.
Tonight
A slight chance of showers and thunderstorms between 2am and 4am. Partly cloudy, with a low around 77. West southwest wind 9 to 11 mph becoming south in the evening. Winds could gust as high as 20 mph. Chance of precipitation is 20%.
Monday
Sunny and hot, with a high near 97. Heat index values as high as 110. Southwest wind around 11 mph, with gusts as high as 18 mph.
Monday Night
Mostly clear, with a low around 73. West wind 7 to 9 mph becoming north after midnight.
Tuesday
Mostly sunny, with a high near 90. Northeast wind around 8 mph.
Tuesday Night
Partly cloudy, with a low around 68.
Wednesday
Sunny, with a high near 90.
Wednesday Night
Mostly clear, with a low around 67.
Thursday
Mostly sunny, with a high near 89.
Thursday Night
Mostly cloudy, with a low around 68.
Friday
A 30 percent chance of showers. Mostly sunny, with a high near 85.
Friday Night
Partly cloudy, with a low around 66.
Saturday
Sunny, with a high near 87.
Additional Forecasts and Information
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ABOUT THIS FORECAST
Point Forecast:
4 Miles S Martinsburg IA
41.13°N 92.27°W
41.13°N 92.27°W
6:31 am CDT Jul 26, 2026
11am CDT Jul 26, 2026-6pm CDT Aug 1, 2026



