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Current weather in Ottumwa is overcast clouds.

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Weather data for Ottumwa is updated regularly with the latest available observations and forecasts.

Now · 10:36 PM

Ottumwa Weather & Hourly Forecast

United States · Iowa · 52501

76°F

Overcast night

Feels like: 74°F

💧 Humidity 70% 🌡 Pressure 29.88 inHg 💨 Wind 13 mph 👁 Visibility 22.0 mi ☁ Clouds 97% ☀️ UV index 0.0 · Low 🌅 Sunrise — 🌇 Sunset —

Hourly Forecast for Ottumwa

Today

11:00 PM

Overcast night

76° 💧 None 💨 13 mph H 70%29.88 inHg

Tomorrow

2:00 AM

Partly cloudy night

79° 💧 0.000 in 💨 14 mph H 71%29.85 inHg

5:00 AM

Partly cloudy night

77° 💧 0.127 in 💨 12 mph H 77%29.88 inHg

8:00 AM

Light thunderstorms

71° 💧 0.064 in 💨 7 mph H 96%29.97 inHg

11:00 AM

Overcast

77° 💧 0.009 in 💨 2 mph H 85%30.00 inHg

2:00 PM

Overcast

79° 💧 0.062 in 💨 6 mph H 77%30.03 inHg

5:00 PM

Light rain

66° 💧 0.075 in 💨 10 mph H 90%30.09 inHg

8:00 PM

Light rain

66° 💧 0.128 in 💨 6 mph H 94%30.12 inHg

11:00 PM

Severe thunderstorms

66° 💧 0.518 in 💨 6 mph H 95%30.18 inHg

Wednesday

2:00 AM

Light rain

65° 💧 0.207 in 💨 7 mph H 95%30.18 inHg

5:00 AM

Thunderstorms

62° 💧 0.463 in 💨 10 mph H 95%30.21 inHg

8:00 AM

Light rain

62° 💧 0.168 in 💨 10 mph H 95%30.24 inHg

11:00 AM

Overcast

65° 💧 0.020 in 💨 7 mph H 94%30.27 inHg

2:00 PM

Light rain

72° 💧 0.032 in 💨 3 mph H 91%30.18 inHg

5:00 PM

Mostly sunny

78° 💧 None 💨 5 mph H 86%30.12 inHg

8:00 PM

Mostly clear night

73° 💧 0.001 in 💨 6 mph H 97%30.12 inHg

Today

11:00 PM

Overcast night

76° 💧 None 💨 13 mph H 70%29.88 inHg

Tomorrow

12:00 AM

Mostly cloudy night

77° 💧 None 💨 15 mph H 71%29.85 inHg

1:00 AM

Mostly clear night

79° 💧 None 💨 16 mph H 70%29.83 inHg

2:00 AM

Partly cloudy night

79° 💧 None 💨 14 mph H 71%29.85 inHg

3:00 AM

Overcast night

79° 💧 None 💨 11 mph H 73%29.85 inHg

4:00 AM

Clear night

78° 💧 0.000 in 💨 10 mph H 76%29.85 inHg

5:00 AM

Partly cloudy night

77° 💧 0.000 in 💨 12 mph H 77%29.88 inHg

6:00 AM

Thunderstorms

71° 💧 0.104 in 💨 6 mph H 96%29.97 inHg

7:00 AM

Light thunderstorms

71° 💧 0.023 in 💨 6 mph H 98%29.97 inHg

8:00 AM

Light thunderstorms

71° 💧 0.059 in 💨 7 mph H 96%29.97 inHg

9:00 AM

Strong thunderstorm

73° 💧 0.001 in 💨 5 mph H 95%29.97 inHg

10:00 AM

Overcast

76° 💧 0.003 in 💨 4 mph H 89%30.00 inHg

11:00 AM

Overcast

77° 💧 0.000 in 💨 2 mph H 85%30.00 inHg

12:00 PM

Overcast

79° 💧 0.001 in 💨 4 mph H 80%30.03 inHg

1:00 PM

Light rain

79° 💧 0.008 in 💨 6 mph H 80%30.03 inHg

2:00 PM

Overcast

79° 💧 0.003 in 💨 6 mph H 77%30.03 inHg

3:00 PM

Light rain

74° 💧 0.022 in 💨 9 mph H 90%30.03 inHg

4:00 PM

Light rain

68° 💧 0.037 in 💨 9 mph H 92%30.06 inHg

5:00 PM

Light rain

66° 💧 0.035 in 💨 10 mph H 90%30.09 inHg

6:00 PM

Light rain

67° 💧 0.014 in 💨 7 mph H 90%30.09 inHg

7:00 PM

Light rain

66° 💧 0.026 in 💨 6 mph H 93%30.09 inHg

8:00 PM

Light rain

66° 💧 0.033 in 💨 6 mph H 94%30.12 inHg

9:00 PM

Light rain

66° 💧 0.011 in 💨 6 mph H 95%30.15 inHg

10:00 PM

Light thunderstorms

66° 💧 0.084 in 💨 5 mph H 94%30.18 inHg

11:00 PM

Severe thunderstorms

66° 💧 0.325 in 💨 6 mph H 95%30.18 inHg

Wednesday

12:00 AM

Thunderstorms

66° 💧 0.120 in 💨 5 mph H 95%30.18 inHg

1:00 AM

Light rain

66° 💧 0.073 in 💨 6 mph H 95%30.18 inHg

2:00 AM

Light rain

65° 💧 0.068 in 💨 7 mph H 95%30.18 inHg

3:00 AM

Light rain

64° 💧 0.091 in 💨 8 mph H 95%30.18 inHg

4:00 AM

Light thunderstorms

63° 💧 0.048 in 💨 9 mph H 95%30.18 inHg

5:00 AM

Thunderstorms

62° 💧 0.149 in 💨 10 mph H 95%30.21 inHg

6:00 AM

Thunderstorms

62° 💧 0.164 in 💨 10 mph H 95%30.21 inHg

7:00 AM

Thunderstorms

62° 💧 0.150 in 💨 8 mph H 95%30.21 inHg

8:00 AM

Light rain

62° 💧 0.006 in 💨 10 mph H 95%30.24 inHg

9:00 AM

Light rain

63° 💧 0.084 in 💨 9 mph H 95%30.24 inHg

10:00 AM

Light thunderstorms

64° 💧 0.078 in 💨 5 mph H 96%30.24 inHg

11:00 AM

Overcast

65° 💧 0.001 in 💨 7 mph H 94%30.27 inHg

12:00 PM

Light rain

67° 💧 0.012 in 💨 8 mph H 92%30.24 inHg

1:00 PM

Light rain

70° 💧 0.008 in 💨 6 mph H 90%30.21 inHg

2:00 PM

Light rain

72° 💧 0.019 in 💨 3 mph H 91%30.18 inHg

3:00 PM

Light rain

73° 💧 0.012 in 💨 5 mph H 94%30.15 inHg

4:00 PM

Partly cloudy

76° 💧 0.001 in 💨 5 mph H 89%30.15 inHg

5:00 PM

Mostly sunny

78° 💧 None 💨 5 mph H 86%30.12 inHg

6:00 PM

Mostly sunny

78° 💧 None 💨 6 mph H 87%30.12 inHg

7:00 PM

Mostly sunny

74° 💧 None 💨 8 mph H 94%30.12 inHg

8:00 PM

Mostly clear night

73° 💧 0.000 in 💨 6 mph H 97%30.12 inHg

9:00 PM

Clear night

73° 💧 0.000 in 💨 5 mph H 97%30.12 inHg

10:00 PM

Mostly clear night

72° 💧 None 💨 5 mph H 97%30.15 inHg

11:00 PM

Partly cloudy night

73° 💧 None 💨 5 mph H 97%30.12 inHg

Thursday

12:00 AM

Mostly cloudy night

73° 💧 None 💨 5 mph H 96%30.12 inHg

1:00 AM

Overcast night

72° 💧 0.000 in 💨 3 mph H 96%30.12 inHg

2:00 AM

Overcast night

71° 💧 0.000 in 💨 2 mph H 98%30.12 inHg

3:00 AM

Mostly cloudy night

71° 💧 None 💨 1 mph H 98%30.12 inHg

4:00 AM

Mostly cloudy night

70° 💧 None 💨 4 mph H 99%30.12 inHg

5:00 AM

Overcast night

69° 💧 None 💨 5 mph H 99%30.12 inHg

6:00 AM

Overcast night

68° 💧 0.003 in 💨 3 mph H 99%30.15 inHg

7:00 AM

Light rain

68° 💧 0.014 in 💨 3 mph H 99%30.15 inHg

4:00 PM

Mostly cloudy

84° 💧 None 💨 4 mph H 69%30.12 inHg

7:00 PM

Mostly sunny

79° 💧 None 💨 6 mph H 82%30.15 inHg

10:00 PM

Mostly clear night

74° 💧 None 💨 7 mph H 90%30.18 inHg

Friday

1:00 AM

Mostly clear night

71° 💧 None 💨 7 mph H 93%30.21 inHg

4:00 AM

Light rain

70° 💧 None 💨 9 mph H 93%30.18 inHg

7:00 AM

Overcast

68° 💧 None 💨 8 mph H 98%30.18 inHg

10:00 AM

Overcast

72° 💧 None 💨 11 mph H 91%30.18 inHg

1:00 PM

Overcast

80° 💧 None 💨 10 mph H 77%30.09 inHg

4:00 PM

Mostly sunny

85° 💧 None 💨 9 mph H 68%30.00 inHg

7:00 PM

Partly cloudy

75° 💧 None 💨 8 mph H 94%29.97 inHg

10:00 PM

Overcast night

74° 💧 None 💨 10 mph H 95%29.97 inHg

Saturday

1:00 AM

Overcast night

75° 💧 None 💨 12 mph H 92%29.94 inHg

4:00 AM

Mostly cloudy night

75° 💧 None 💨 11 mph H 89%29.88 inHg

7:00 AM

Light rain

72° 💧 None 💨 2 mph H 95%29.88 inHg

10:00 AM

Light rain

74° 💧 None 💨 12 mph H 94%29.88 inHg

1:00 PM

Partly cloudy

84° 💧 None 💨 11 mph H 71%29.83 inHg

4:00 PM

Light rain

85° 💧 None 💨 9 mph H 69%29.80 inHg

7:00 PM

Light thunderstorms

78° 💧 None 💨 7 mph H 87%29.80 inHg

10:00 PM

Overcast night

73° 💧 None 💨 5 mph H 98%29.85 inHg

Sunday

1:00 AM

Partly cloudy night

69° 💧 None 💨 7 mph H 97%29.88 inHg

4:00 AM

Overcast night

66° 💧 None 💨 5 mph H 97%29.88 inHg

7:00 AM

Mostly cloudy

65° 💧 None 💨 5 mph H 97%29.91 inHg

10:00 AM

Overcast

67° 💧 None 💨 5 mph H 95%29.91 inHg

1:00 PM

Moderate rain

72° 💧 None 💨 3 mph H 90%29.94 inHg

7:00 PM

Mostly cloudy

75° 💧 None 💨 9 mph H 66%29.97 inHg

Monday

1:00 AM

Mostly cloudy night

72° 💧 None 💨 6 mph H 73%29.94 inHg

7:00 AM

Overcast

64° 💧 None 💨 6 mph H 88%30.03 inHg

1:00 PM

Overcast

63° 💧 None 💨 7 mph H 91%30.09 inHg

7:00 PM

Mostly cloudy

70° 💧 None 💨 11 mph H 60%30.12 inHg

Tuesday

1:00 AM

Overcast night

66° 💧 None 💨 9 mph H 67%30.09 inHg

7:00 AM

Overcast

60° 💧 None 💨 8 mph H 82%30.18 inHg

1:00 PM

Overcast

55° 💧 None 💨 8 mph H 85%30.24 inHg

7:00 PM

Overcast

67° 💧 None 💨 11 mph H 61%30.24 inHg

Wednesday

1:00 AM

Overcast night

63° 💧 None 💨 8 mph H 66%30.18 inHg

7:00 AM

Partly cloudy

57° 💧 None 💨 8 mph H 71%30.24 inHg

1:00 PM

Partly cloudy

56° 💧 None 💨 7 mph H 87%30.27 inHg

7:00 PM

Sunny

68° 💧 None 💨 8 mph H 63%30.27 inHg

Thursday

1:00 AM

Clear night

65° 💧 None 💨 6 mph H 75%30.21 inHg

7:00 AM

Overcast

64° 💧 None 💨 5 mph H 80%30.24 inHg

1:00 PM

Mostly sunny

62° 💧 None 💨 4 mph H 87%30.24 inHg

7:00 PM

Partly cloudy

75° 💧 None 💨 4 mph H 63%30.24 inHg

Friday

1:00 AM

Mostly clear night

70° 💧 None 💨 5 mph H 81%30.21 inHg

7:00 AM

Overcast

68° 💧 None 💨 4 mph H 90%30.21 inHg

1:00 PM

Overcast

66° 💧 None 💨 5 mph H 94%30.24 inHg

7:00 PM

Light rain

78° 💧 None 💨 4 mph H 70%30.21 inHg

Saturday

1:00 AM

Overcast night

74° 💧 None 💨 1 mph H 86%30.15 inHg

7:00 AM

Overcast night

70° 💧 None 💨 5 mph H 87%30.15 inHg

1:00 PM

Overcast

68° 💧 None 💨 5 mph H 94%30.15 inHg

7:00 PM

Overcast

80° 💧 None 💨 7 mph H 67%30.09 inHg

Sunday

1:00 AM

Partly cloudy night

75° 💧 None 💨 4 mph H 77%30.00 inHg

7:00 AM

Mostly cloudy night

71° 💧 None 💨 10 mph H 76%29.97 inHg

1:00 PM

Overcast

65° 💧 None 💨 10 mph H 93%29.91 inHg

7:00 PM

Clear night

82° 💧 None 💨 12 mph H 61%29.83 inHg

Monday

1:00 AM

Clear night

78° 💧 None 💨 8 mph H 70%29.77 inHg

7:00 AM

Light rain

71° 💧 None 💨 4 mph H 85%29.80 inHg

1:00 PM

Sunny

65° 💧 None 💨 3 mph H 99%29.83 inHg

7:00 PM

Clear night

80° 💧 None 💨 3 mph H 63%29.85 inHg

Tuesday

1:00 AM

Clear night

75° 💧 None 💨 1 mph H 75%29.85 inHg

7:00 AM

Clear night

64° 💧 None 💨 2 mph H 95%29.91 inHg

1:00 PM

Sunny

62° 💧 None 💨 3 mph H 96%29.97 inHg

In Ottumwa and, more broadly, across the state of Iowa: This evening, mostly cloudy skies will prevail as temperatures remain mild, hovering between 71 and 72 degrees Fahrenheit. There is a high likelihood of rain, with around 0.11 inches expected to accumulate, and the chance of precipitation reaching nearly 100%. Winds will be moderate from the southeast, reaching up to 16 mph, with gusts possibly gusting as high as 40 mph. These gusty conditions could cause some brief, localized gusts of wind. The rain is expected to taper off overnight, but the next few hours may bring periods of drizzle or light rain. Residents should be prepared for the possibility of wet conditions and gusty winds if venturing outdoors.

15-Day Weather Outlook for Ottumwa

TomorrowTomorrow

Thunderstorms 79°/66° 💧 None 💨 16 mph

Wednesday, Sep 16Wed Sep 16

Thunderstorms 78°/62° 💧 None 💨 10 mph

Thursday, Sep 17Thu Sep 17

Light rain 84°/68° 💧 1.336 in 💨 7 mph

Friday, Sep 18Fri Sep 18

Light rain 85°/68° 💧 0.143 in 💨 11 mph

Saturday, Sep 19Sat Sep 19

Light thunderstorms 85°/72° 💧 0.665 in 💨 12 mph

Sunday, Sep 20Sun Sep 20

Moderate rain 75°/65° 💧 0.709 in 💨 9 mph

Monday, Sep 21Mon Sep 21

Mostly cloudy 72°/63° 💧 0.001 in 💨 11 mph

Tuesday, Sep 22Tue Sep 22

Overcast 67°/55° 💧 None 💨 11 mph

Wednesday, Sep 23Wed Sep 23

Overcast 68°/56° 💧 None 💨 8 mph

Thursday, Sep 24Thu Sep 24

Partly cloudy 75°/62° 💧 0.001 in 💨 6 mph

Friday, Sep 25Fri Sep 25

Light rain 78°/66° 💧 0.027 in 💨 5 mph

Saturday, Sep 26Sat Sep 26

Overcast 80°/68° 💧 0.031 in 💨 7 mph

Sunday, Sep 27Sun Sep 27

Overcast 82°/65° 💧 0.103 in 💨 12 mph

Monday, Sep 28Mon Sep 28

Light rain 80°/65° 💧 0.022 in 💨 8 mph

Tuesday, Sep 29Tue Sep 29

Sunny 75°/62° 💧 None 💨 3 mph

TEMPERATURE OUTLOOK

Temperature & Weather Trends in Ottumwa

Vertical axis: °F · Color based on temperature

AIR QUALITY FORECAST

Air Quality Forecast for Ottumwa

Hourly forecast · Updated every 2 hours

Fair

Nearest forecast value 11:00 PM

PM2.5 Fine particles Good 3,9µg/m³

Microscopic particles that can penetrate deep into the lungs. Elevated concentrations can especially affect children, older adults and people with respiratory conditions.

PM10 Particulate matter Good 4,5µg/m³

Includes dust, pollen and other airborne particles. High concentrations may irritate the respiratory system.

O₃ Ozone Fair 67,5µg/m³

Ground-level ozone can irritate the eyes and respiratory system when concentrations are elevated.

NO₂ Nitrogen dioxide Good 1,5µg/m³

A gas emitted mainly by traffic and some industrial activity. High exposure can affect respiratory health.

Air quality is acceptable for most people.

UV & HEALTH

UV, Sun & Health Outlook in Ottumwa

Maximum daily UV Today, tomorrow and the following day show the maximum UV index forecast for each day.

0–2 Low 3–5 Moderate 6–7 High 8–10 Very high 11+ Extreme

Today UV 5,0Moderate 🙂Fair

Tomorrow UV 3,5Moderate 🙂Fair

Wednesday UV 1,0Low 🙂Fair

Thursday UV 6,0High 🙂Fair

Friday UV 8,0Very high 🙂Fair

Saturday UV 6,0High —Unavailable

Sunday UV 4,0Moderate —Unavailable

Today's weather health advice Open today's recommendations.

Moderate UV risk

Sunglasses and sun protection are recommended for prolonged exposure.

Acceptable air quality

Air quality is acceptable for most people. Very sensitive people may want to reduce prolonged exertion.

Comfortable temperature conditions

Temperatures should feel comfortable for most people, with no particular heat or cold precautions needed.

Good conditions for outdoor activities

Outdoor activities can generally be enjoyed normally, with sun protection adjusted to the UV level.

WIND OUTLOOK

Hourly Wind Forecast for Ottumwa

Vertical axis: mph · Horizontal axis: hours

Sustained wind Max gusts

NIGHT SKY · OTTUMWA, IOWA

Tonight's Stargazing & Shooting Stars

Excellent observing conditions. Best local viewing window: 4:00 AM–5:00 AM.

95/100Best-hour score

BEST TIME TONIGHT 4:00 AM–5:00 AM Astronomical darkness: 8:54 PM–5:17 AM

☁ Cloud cover 6% Real hourly forecast for the best viewing hour.

☾ Moonlight 13% Waxing Crescent · Moon below the horizon at the best viewing hour.

☄ Meteor activity September ε-Perseids Reference ZHR 8 · Radiant 82° high at the best hour.

✦ Estimated visible meteors 2–5/hour Local estimate after weather, moonlight and radiant-height adjustments.

Chance ≥1 meteor in 30 min79%

UPCOMING METEOR PERIODSStart, peak and end dates · weather should be checked closer to the peak.

SEP 5–SEP 21

September ε-PerseidsStart SEP 5 · Peak SEP 9 · End SEP 21 · ZHR 8 · 6% Moon at peak

ACTIVE NOW

SEP 20–NOV 20

Southern TauridsStart SEP 20 · Peak NOV 5 · End NOV 20 · ZHR 7 · 20% Moon at peak

UPCOMING

OCT 2–NOV 7

OrionidsStart OCT 2 · Peak OCT 21 · End NOV 7 · ZHR 20 · 77% Moon at peak

UPCOMING

OCT 20–DEC 10

Northern TauridsStart OCT 20 · Peak NOV 12 · End DEC 10 · ZHR 5 · 7% Moon at peak

UPCOMING

Experimental local observing estimate. Weather values come from the hourly forecast already used on this page. Moon position and astronomical darkness are calculated locally from time and coordinates. Meteor-shower ZHR describes ideal conditions and is not the number of meteors a person should expect to see locally.

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Forecast data for Ottumwa were last refreshed today at 10:36 PM. The current forecast period extends through 16/09/2026 at 8:00 PM. Weather, air-quality and UV-index data are provided through WEATHER-INFO.COM. Forecasts are produced automatically from the latest available data and are subject to periodic technical checks. This service is intended for general weather information.