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As of 19:50 MDT

Weather in Ottumwa, SD

89°Current weather

Ottumwa, Saturday, 8 August, 19:50

Clear. Feels like 86°. High 98°, low 63°.

Pressure29.68 inHg
Wind5.3 mph N
Humidity25%
Visibility6.2 mi
Dew point48°
Sun, 0992° / 67°0Overcast
92 °Overcast

Ottumwa, Sunday, 9 August

Overcast. High 92°, low 67°.

Pressure29.80 inHg
Wind15.8 mph NE
Humidity31%
Visibility6.2 mi
Dew point54°
Mon, 10104° / 67°0Mostly clear
104 °Mostly clear

Ottumwa, Monday, 10 August

Mostly clear. High 104°, low 67°.

Pressure29.71 inHg
Wind14.3 mph SE
Humidity29%
Visibility6.2 mi
Dew point58°
Tue, 1193° / 67°0.07Light rain
93 °Light rain

Ottumwa, Tuesday, 11 August

Light rain. High 93°, low 67°.

Pressure29.83 inHg
Wind9.8 mph E
Humidity39%
Visibility6.2 mi
Dew point59°
Wed, 1291° / 67°0.38Rain
91 °Rain

Ottumwa, Wednesday, 12 August

Rain. High 91°, low 67°.

Pressure29.85 inHg
Wind9 mph SE
Humidity43%
Visibility6.2 mi
Dew point60°
Thu, 1373° / 62°1.78Heavy rain
73 °Heavy rain

Ottumwa, Thursday, 13 August

Heavy rain. High 73°, low 62°.

Pressure29.97 inHg
Wind21.1 mph NE
Humidity65%
Visibility—
Dew point59°
Fri, 1479° / 62°0Overcast
79 °Overcast

Ottumwa, Friday, 14 August

Overcast. High 79°, low 62°.

Pressure30.03 inHg
Wind18.8 mph SE
Humidity48%
Visibility—
Dew point53°
Sat, 1582° / 65°0.01Light rain
82 °Light rain

Ottumwa, Saturday, 15 August

Light rain. High 82°, low 65°.

Pressure30.06 inHg
Wind14.4 mph S
Humidity60%
Visibility—
Dew point61°
Sun, 1683° / 68°0.11Light rain
83 °Light rain

Ottumwa, Sunday, 16 August

Light rain. High 83°, low 68°.

Pressure30.03 inHg
Wind13.7 mph NE
Humidity59%
Visibility—
Dew point62°
Mon, 1793° / 64°0.04Light rain
93 °Light rain

Ottumwa, Monday, 17 August

Light rain. High 93°, low 64°.

Pressure29.94 inHg
Wind28.1 mph W
Humidity51%
Visibility—
Dew point61°
Tue, 1893° / 71°0.02Light rain
93 °Light rain

Ottumwa, Tuesday, 18 August

Light rain. High 93°, low 71°.

Pressure29.94 inHg
Wind23.6 mph NE
Humidity29%
Visibility—
Dew point49°
Wed, 1978° / 61°0.02Light rain
78 °Light rain

Ottumwa, Wednesday, 19 August

Light rain. High 78°, low 61°.

Pressure30.12 inHg
Wind18.9 mph NE
Humidity43%
Visibility—
Dew point48°
Thu, 2076° / 62°0.17Light rain
76 °Light rain

Ottumwa, Thursday, 20 August

Light rain. High 76°, low 62°.

Pressure30.00 inHg
Wind15.7 mph SE
Humidity71%
Visibility—
Dew point57°
Fri, 2186° / 63°0.38Rain
86 °Rain

Ottumwa, Friday, 21 August

Rain. High 86°, low 63°.

Pressure29.68 inHg
Wind20.7 mph S
Humidity39%
Visibility—
Dew point56°
Sat, 2283° / 64°0Clear
83 °Clear

Ottumwa, Saturday, 22 August

Clear. High 83°, low 64°.

Pressure29.83 inHg
Wind12.6 mph NW
Humidity38%
Visibility—
Dew point51°
Sun, 2385° / 63°0Mostly clear
85 °Mostly clear

Ottumwa, Sunday, 23 August

Mostly clear. High 85°, low 63°.

Pressure29.91 inHg
Wind14.5 mph SE
Humidity28%
Visibility—
Dew point42°

About the monthly outlook

How accurate is a 30-day forecast?

The first 16 days come from weather models — reliable for the first 3–5 days and progressively less so after that. Days 17 through 30 for Ottumwa, SD are built from the climate normal, the 60-year average, so they show typical weather for those dates rather than a specific forecast.

What does "above normal" mean?

We compare the forecast against the climate normal for those exact calendar days, computed from 60 years of observations. The deviation shows how much the coming month differs from a typical one.

Where do the 66-year records come from?

They are real temperature extremes recorded in Ottumwa, SD since 1960: the highest and lowest reading for each calendar date, with the year it happened.

How often is it updated?

The forecast portion refreshes every hour; the climate portion is based on long-term data and stays stable.