Weather in Harlan, IA
Harlan, Thursday, 29 October, 23:03
Mostly clear. Feels like 52°. High 66°, low 48°.
Monthly outlook for Harlan, IA: average high 57°, average low 47.2°. That is 3° above the climate normal for October. Precipitation is expected on 7 days (about 3.1 inches), against a normal of 4 days and 1.2 inches. The warmest day looks like 31 October (69.1°), the coolest 13 November (39.6°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 29 October – 7 November | 62.3° | 53.3° | +5° |
| 8 November – 17 November | 48° | 48.1° | -0.1° |
| 18 November – 27 November | at normal | 43.6° | — |
October records over 66 years
Climate normals and records are computed from the nearest reference point — Kimballton (13 mi).
0.99
Harlan, Friday, 30 October
Heavy rain. High 62°, low 51°.
0.01Harlan, Saturday, 31 October
Light rain. High 69°, low 55°.
0.02Harlan, Sunday, 1 November
Light rain. High 69°, low 56°.
1.13Harlan, Monday, 2 November
Rain. High 64°, low 61°.
0.08Harlan, Tuesday, 3 November
Light rain. High 62°, low 49°.
0.01Harlan, Wednesday, 4 November
Light rain. High 56°, low 44°.
0
Harlan, Thursday, 5 November
Overcast. High 59°, low 44°.
0
Harlan, Friday, 6 November
Clear. High 58°, low 45°.
0.07Harlan, Saturday, 7 November
Light rain. High 57°, low 46°.
0.67Harlan, Sunday, 8 November
Rain. High 50°, low 46°.
0.06Harlan, Monday, 9 November
Light rain. High 45°, low 43°.
0Harlan, Tuesday, 10 November
Light rain. High 46°, low 42°.
0.07Harlan, Wednesday, 11 November
Light rain. High 44°, low 42°.
0Harlan, Thursday, 12 November
Overcast. High 49°, low 43°.
0Harlan, Friday, 13 November
Overcast. High 55°, low 40°.
0.03
Harlan, Saturday, 14 November
Climate normal for this date — 60-year average.
0.06
Harlan, Sunday, 15 November
Climate normal for this date — 60-year average.
0.04Harlan, Monday, 16 November
Climate normal for this date — 60-year average.
0.07Harlan, Tuesday, 17 November
Climate normal for this date — 60-year average.
0.06Harlan, Wednesday, 18 November
Climate normal for this date — 60-year average.
0.07Harlan, Thursday, 19 November
Climate normal for this date — 60-year average.
0.1Harlan, Friday, 20 November
Climate normal for this date — 60-year average.
0.03Harlan, Saturday, 21 November
Climate normal for this date — 60-year average.
0.02Harlan, Sunday, 22 November
Climate normal for this date — 60-year average.
0.06Harlan, Monday, 23 November
Climate normal for this date — 60-year average.
0.05Harlan, Tuesday, 24 November
Climate normal for this date — 60-year average.
0.02Harlan, Wednesday, 25 November
Climate normal for this date — 60-year average.
0.07Harlan, Thursday, 26 November
Climate normal for this date — 60-year average.
0.08Harlan, Friday, 27 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 Harlan, 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 Harlan, 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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