Weather in Marietta, IA
Marietta, Tuesday, 20 October, 08:02
Clear. Feels like 40°. High 68°, low 42°.
Monthly outlook for Marietta, IA: average high 57.8°, average low 41.7°. That is 0.7° above the climate normal for October. Precipitation is expected on 1 day (about 0.4 inches), against a normal of 4 days and 1.5 inches. The warmest day looks like 24 October (72.7°), the coolest 28 October (27.1°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 20 October – 29 October | 60.9° | 58.2° | +1.5° |
| 30 October – 8 November | 52.7° | 53.1° | -0.2° |
| 9 November – 18 November | at normal | 47.7° | — |
October records over 66 years
Climate normals and records are computed from the nearest reference point — Ferguson (12 mi).
0Marietta, Wednesday, 21 October
Clear. High 71°, low 45°.
0Marietta, Thursday, 22 October
Clear. High 72°, low 49°.
0Marietta, Friday, 23 October
Clear. High 71°, low 51°.
0
Marietta, Saturday, 24 October
Overcast. High 73°, low 57°.
0.01
Marietta, Sunday, 25 October
Light rain. High 68°, low 54°.
0.43Marietta, Monday, 26 October
Rain. High 50°, low 40°.
0Marietta, Tuesday, 27 October
Clear. High 43°, low 32°.
0Marietta, Wednesday, 28 October
Clear. High 43°, low 27°.
0
Marietta, Thursday, 29 October
Partly cloudy. High 51°, low 31°.
0Marietta, Friday, 30 October
Overcast. High 50°, low 37°.
0Marietta, Saturday, 31 October
Clear. High 52°, low 36°.
0Marietta, Sunday, 1 November
Overcast. High 46°, low 42°.
0Marietta, Monday, 2 November
Overcast. High 52°, low 37°.
0Marietta, Tuesday, 3 November
Overcast. High 57°, low 44°.
0Marietta, Wednesday, 4 November
Overcast. High 60°, low 43°.
0.06Marietta, Thursday, 5 November
Climate normal for this date — 60-year average.
0.07
Marietta, Friday, 6 November
Climate normal for this date — 60-year average.
0.02Marietta, Saturday, 7 November
Climate normal for this date — 60-year average.
0.04Marietta, Sunday, 8 November
Climate normal for this date — 60-year average.
0.09Marietta, Monday, 9 November
Climate normal for this date — 60-year average.
0.1Marietta, Tuesday, 10 November
Climate normal for this date — 60-year average.
0.09Marietta, Wednesday, 11 November
Climate normal for this date — 60-year average.
0.06Marietta, Thursday, 12 November
Climate normal for this date — 60-year average.
0.07Marietta, Friday, 13 November
Climate normal for this date — 60-year average.
0.03Marietta, Saturday, 14 November
Climate normal for this date — 60-year average.
0.06Marietta, Sunday, 15 November
Climate normal for this date — 60-year average.
0.04Marietta, Monday, 16 November
Climate normal for this date — 60-year average.
0.1Marietta, Tuesday, 17 November
Climate normal for this date — 60-year average.
0.06Marietta, Wednesday, 18 November
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 Marietta, 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 Marietta, 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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