Weather in Decatur City, IA
Decatur City, Sunday, 9 August, 13:45
Clear. Feels like 97°. High 93°, low 73°.
Monthly outlook for Decatur City, IA: average high 94.7°, average low 68.6°. That is 6.6° above the climate normal for August. Precipitation is expected on 7 days (about 1.1 inches), against a normal of 5 days and 1.7 inches. The warmest day looks like 20 August (103.9°), the coolest 22 August (60.8°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 9 August – 18 August | 95° | 82.8° | +6.8° |
| 19 August – 28 August | 94.2° | 82.8° | +6.3° |
| 29 August – 7 September | at normal | 80.6° | — |
August records over 66 years
Climate normals and records are computed from the nearest reference point — Leon (4 mi).
0
Decatur City, Monday, 10 August
Overcast. High 95°, low 71°.
0.04
Decatur City, Tuesday, 11 August
Light rain. High 101°, low 70°.
0.02Decatur City, Wednesday, 12 August
Light rain. High 88°, low 69°.
0.07Decatur City, Thursday, 13 August
Light rain. High 85°, low 69°.
0.02Decatur City, Friday, 14 August
Light rain. High 99°, low 71°.
0.01Decatur City, Saturday, 15 August
Light rain. High 103°, low 72°.
0Decatur City, Sunday, 16 August
Overcast. High 90°, low 66°.
0.34Decatur City, Monday, 17 August
Rain. High 98°, low 68°.
0.02Decatur City, Tuesday, 18 August
Light rain. High 98°, low 70°.
0.11Decatur City, Wednesday, 19 August
Light rain. High 89°, low 69°.
0.11Decatur City, Thursday, 20 August
Light rain. High 104°, low 70°.
0
Decatur City, Friday, 21 August
Partly cloudy. High 90°, low 65°.
0Decatur City, Saturday, 22 August
Partly cloudy. High 90°, low 61°.
0.24Decatur City, Sunday, 23 August
Light rain. High 97°, low 64°.
0.11Decatur City, Monday, 24 August
Light rain. High 96°, low 70°.
0.18
Decatur City, Tuesday, 25 August
Climate normal for this date — 60-year average.
0.17Decatur City, Wednesday, 26 August
Climate normal for this date — 60-year average.
0.13Decatur City, Thursday, 27 August
Climate normal for this date — 60-year average.
0.14Decatur City, Friday, 28 August
Climate normal for this date — 60-year average.
0.07Decatur City, Saturday, 29 August
Climate normal for this date — 60-year average.
0.11Decatur City, Sunday, 30 August
Climate normal for this date — 60-year average.
0.11Decatur City, Monday, 31 August
Climate normal for this date — 60-year average.
0.1Decatur City, Tuesday, 1 September
Climate normal for this date — 60-year average.
0.09Decatur City, Wednesday, 2 September
Climate normal for this date — 60-year average.
0.1Decatur City, Thursday, 3 September
Climate normal for this date — 60-year average.
0.09Decatur City, Friday, 4 September
Climate normal for this date — 60-year average.
0.09Decatur City, Saturday, 5 September
Climate normal for this date — 60-year average.
0.09Decatur City, Sunday, 6 September
Climate normal for this date — 60-year average.
0.17Decatur City, Monday, 7 September
Climate normal for this date — 60-year average.
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 Decatur City, IA 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 Decatur City, IA 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.
Sun and moon today
Weather history
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