Weather in Vandalia, IA
Vandalia, Wednesday, 21 October, 07:21
Overcast. Feels like 50°. High 74°, low 50°.
Monthly outlook for Vandalia, IA: average high 62.5°, average low 48.8°. That is 3.4° above the climate normal for October. Precipitation is expected on 6 days (about 2.2 inches), against a normal of 4 days and 1.6 inches. The warmest day looks like 25 October (75.4°), the coolest 30 October (39.7°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 21 October – 30 October | 65.6° | 58.2° | +4.1° |
| 31 October – 9 November | 57.3° | 52.8° | +2.5° |
| 10 November – 19 November | at normal | 47.9° | — |
October records over 66 years
Climate normals and records are computed from the nearest reference point — Mitchellville (9 mi).
0
Vandalia, Thursday, 22 October
Clear. High 75°, low 49°.
0Vandalia, Friday, 23 October
Overcast. High 74°, low 53°.
0Vandalia, Saturday, 24 October
Overcast. High 74°, low 58°.
0Vandalia, Sunday, 25 October
Overcast. High 75°, low 55°.
0.05
Vandalia, Monday, 26 October
Light rain. High 71°, low 55°.
0.24Vandalia, Tuesday, 27 October
Rain. High 50°, low 45°.
0.34Vandalia, Wednesday, 28 October
Rain. High 55°, low 45°.
0Vandalia, Thursday, 29 October
Overcast. High 53°, low 43°.
0
Vandalia, Friday, 30 October
Partly cloudy. High 55°, low 40°.
0.11Vandalia, Saturday, 31 October
Light rain. High 48°, low 41°.
0.12Vandalia, Sunday, 1 November
Light rain. High 49°, low 44°.
0Vandalia, Monday, 2 November
Partly cloudy. High 60°, low 48°.
0Vandalia, Tuesday, 3 November
Overcast. High 62°, low 48°.
1.3Vandalia, Wednesday, 4 November
Heavy rain. High 66°, low 59°.
0Vandalia, Thursday, 5 November
Clear. High 59°, low 49°.
0.06
Vandalia, Friday, 6 November
Climate normal for this date — 60-year average.
0.02Vandalia, Saturday, 7 November
Climate normal for this date — 60-year average.
0.04Vandalia, Sunday, 8 November
Climate normal for this date — 60-year average.
0.09Vandalia, Monday, 9 November
Climate normal for this date — 60-year average.
0.08Vandalia, Tuesday, 10 November
Climate normal for this date — 60-year average.
0.09Vandalia, Wednesday, 11 November
Climate normal for this date — 60-year average.
0.06Vandalia, Thursday, 12 November
Climate normal for this date — 60-year average.
0.07Vandalia, Friday, 13 November
Climate normal for this date — 60-year average.
0.03Vandalia, Saturday, 14 November
Climate normal for this date — 60-year average.
0.06Vandalia, Sunday, 15 November
Climate normal for this date — 60-year average.
0.05Vandalia, Monday, 16 November
Climate normal for this date — 60-year average.
0.1Vandalia, Tuesday, 17 November
Climate normal for this date — 60-year average.
0.06Vandalia, Wednesday, 18 November
Climate normal for this date — 60-year average.
0.07Vandalia, Thursday, 19 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 Vandalia, 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 Vandalia, 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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