UTC Offset
UTC-05:00
Ottumwa, United States Snapshot 2026
Where is Ottumwa?
Ottumwa, United States
- Continent
- Americas
- Country
- United States
- City
- Ottumwa
- Population
- 24.6K
- Elevation
- 205 m
- Coordinates
- 41.02°, -92.41°
Ottumwa is a city in United States with a population of approximately 24.6K. Average temperatures range from -8°C (18°F) in January to 30°C (87°F) in July. The best time to visit is May, June, July, August, September. The city sits at an elevation of 205 m above sea level.
Time in Ottumwa right now
Open full time & time zone page 01:29 29
Tuesday, June 16, 2026
IANA time zone
America/Chicago
Daylight saving
DST in effect
CST / CDT
Next DST change
November 1
backward -1h
Live weather in Ottumwa
Daylight in Ottumwa today
View full sunrise & sunset page Sunrise
Sunset
Day length
15h 07m
Climate normals for Ottumwa
Long-term monthly averages based on historical data.
January
Poor 
February
Poor March
Poor April
Fair May best
Excellent June best
Excellent July best
Excellent August best
Excellent September best
Excellent October
Good November
Poor December
Poor | Month | Temp | Feels Like | Rain | Sun | Humidity | UV | Status | Details |
|---|---|---|---|---|---|---|---|---|
| January | 1°C / -8°C | -4°C / -13°C | 7days (51 mm) Good | 5.7h Fair | 73% Muggy | 2.5 Moderate | Poor | View Details |
| February | 4°C / -6°C | 0°C / -11°C | 6days (38 mm) Good | 7.4h Good | 67% Muggy | 3.7 Moderate | Poor | View Details |
| March | 12°C / 1°C | 8°C / -3°C | 11days (83 mm) Wet | 7.7h Good | 65% Muggy | 4.7 Moderate | Poor | View Details |
| April | 17°C / 6°C | 15°C / 2°C | 11days (93 mm) Wet | 8.8h Good | 64% Muggy | 5.7 High | Fair | View Details |
| May best | 23°C / 13°C | 23°C / 11°C | 13days (121 mm) Wet | 10h Excellent | 68% Muggy | 6.9 High | Excellent | View Details |
| June best | 29°C / 19°C | 31°C / 19°C | 11days (113 mm) Wet | 12.1h Excellent | 65% Muggy | 7.2 Very High | Excellent | View Details |
| July best | 30°C / 21°C | 33°C / 22°C | 10days (88 mm) Wet | 11.9h Excellent | 70% Muggy | 7.4 Very High | Excellent | View Details |
| August best | 29°C / 20°C | 31°C / 21°C | 9days (77 mm) Wet | 11.2h Excellent | 69% Muggy | 6.7 High | Excellent | View Details |
| September best | 27°C / 17°C | 27°C / 16°C | 8days (97 mm) Wet | 9.9h Good | 67% Muggy | 5.7 High | Excellent | View Details |
| October | 19°C / 10°C | 17°C / 7°C | 8days (89 mm) Wet | 7.7h Good | 64% Muggy | 4.2 Moderate | Good | View Details |
| November | 11°C / 2°C | 7°C / -2°C | 6days (50 mm) Good | 6.6h Fair | 67% Muggy | 2.8 Moderate | Poor | View Details |
| December | 5°C / -4°C | 0°C / -8°C | 6days (45 mm) Good | 5.7h Fair | 70% Muggy | 2.1 Moderate | Poor | View Details |
Monthly Temperatures
HighLow
Line chart showing monthly temperatures. Jan: 1°C / -8°C . Feb: 4°C / -6°C . Mar: 12°C / 1°C . Apr: 17°C / 6°C . May: 23°C / 13°C . Jun: 29°C / 19°C . Jul: 30°C / 21°C . Aug: 29°C / 20°C . Sep: 27°C / 17°C . Oct: 19°C / 10°C . Nov: 11°C / 2°C . Dec: 5°C / -4°C .
Monthly Rainfall
Rainfall
Bar chart showing monthly rainfall. Jan: 51 mm. Feb: 38 mm. Mar: 83 mm. Apr: 93 mm. May: 121 mm. Jun: 113 mm. Jul: 88 mm. Aug: 77 mm. Sep: 97 mm. Oct: 89 mm. Nov: 50 mm. Dec: 45 mm.
Monthly Humidity
Humidity
Line chart showing monthly humidity. Jan: 73%. Feb: 67%. Mar: 65%. Apr: 64%. May: 68%. Jun: 65%. Jul: 70%. Aug: 69%. Sep: 67%. Oct: 64%. Nov: 67%. Dec: 70%.
Monthly Wind Speed
Wind SpeedGusts
Bar chart showing monthly wind speed. Jan: 23 km/h . Feb: 23 km/h . Mar: 24 km/h . Apr: 26 km/h . May: 21 km/h . Jun: 20 km/h . Jul: 17 km/h . Aug: 17 km/h . Sep: 18 km/h . Oct: 22 km/h . Nov: 23 km/h . Dec: 22 km/h .
UV Index
UV Index
Bar chart showing monthly UV index. Jan: UV 3. Feb: UV 4. Mar: UV 5. Apr: UV 6. May: UV 7. Jun: UV 7. Jul: UV 7. Aug: UV 7. Sep: UV 6. Oct: UV 4. Nov: UV 3. Dec: UV 2.
Frequently Asked Questions
Ottumwa has a population of approximately 24.6K.
The best months to visit Ottumwa are May, June, July, August, September, when temperatures are pleasant and rainfall is lower.
Ottumwa receives approximately 945mm of rainfall annually across 106 rainy days.
Ottumwa is located in United States, in the Americas region.
Ottumwa sits at an elevation of 205 m (673 ft) above sea level.