Weather in Griswold, IA
Griswold, Thursday, 15 October, 12:36
Rain. Feels like 55°. High 55°, low 50°.
Monthly outlook for Griswold, IA: average high 63.3°, average low 49.6°. That is 1.9° above the climate normal for October. Precipitation is expected on 7 days (about 2.3 inches), against a normal of 4 days and 1.3 inches. The warmest day looks like 22 October (72.8°), the coolest 17 October (34.4°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 15 October – 24 October | 63.7° | 61.2° | +1.4° |
| 25 October – 3 November | 62.6° | 56.4° | +3.5° |
| 4 November – 13 November | at normal | 50.9° | — |
October records over 66 years
Climate normals and records are computed from the nearest reference point — Lewis (6 mi).
0
Griswold, Friday, 16 October
Partly cloudy. High 52°, low 40°.
0
Griswold, Saturday, 17 October
Clear. High 57°, low 34°.
0Griswold, Sunday, 18 October
Clear. High 63°, low 43°.
0.01Griswold, Monday, 19 October
Light rain. High 64°, low 49°.
0Griswold, Tuesday, 20 October
Clear. High 67°, low 50°.
0.02Griswold, Wednesday, 21 October
Light rain. High 73°, low 53°.
0.35Griswold, Thursday, 22 October
Rain. High 73°, low 60°.
0.21Griswold, Friday, 23 October
Rain. High 71°, low 61°.
0.06Griswold, Saturday, 24 October
Light rain. High 63°, low 52°.
0Griswold, Sunday, 25 October
Clear. High 64°, low 47°.
0.43Griswold, Monday, 26 October
Rain. High 59°, low 48°.
0.35Griswold, Tuesday, 27 October
Light rain. High 62°, low 59°.
0.21Griswold, Wednesday, 28 October
Light rain. High 65°, low 54°.
0.01Griswold, Thursday, 29 October
Light rain. High 68°, low 51°.
0.01Griswold, Friday, 30 October
Light rain. High 58°, low 43°.
0.11Griswold, Saturday, 31 October
Climate normal for this date — 60-year average.
0.16Griswold, Sunday, 1 November
Climate normal for this date — 60-year average.
0.08Griswold, Monday, 2 November
Climate normal for this date — 60-year average.
0.09Griswold, Tuesday, 3 November
Climate normal for this date — 60-year average.
0.07
Griswold, Wednesday, 4 November
Climate normal for this date — 60-year average.
0.05Griswold, Thursday, 5 November
Climate normal for this date — 60-year average.
0.06Griswold, Friday, 6 November
Climate normal for this date — 60-year average.
0.02Griswold, Saturday, 7 November
Climate normal for this date — 60-year average.
0.04Griswold, Sunday, 8 November
Climate normal for this date — 60-year average.
0.13Griswold, Monday, 9 November
Climate normal for this date — 60-year average.
0.08Griswold, Tuesday, 10 November
Climate normal for this date — 60-year average.
0.07Griswold, Wednesday, 11 November
Climate normal for this date — 60-year average.
0.07Griswold, Thursday, 12 November
Climate normal for this date — 60-year average.
0.07Griswold, Friday, 13 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 Griswold, 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 Griswold, 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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