Weather in Harlan, IA
Harlan, Friday, 23 October, 01:06
Overcast. Feels like 59°. High 77°, low 55°.
Monthly outlook for Harlan, IA: average high 62.2°, average low 48.2°. That is 4° above the climate normal for October. Precipitation is expected on 5 days (about 1.7 inches), against a normal of 4 days and 1.2 inches. The warmest day looks like 23 October (76.9°), the coolest 4 November (37.4°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 23 October – 1 November | 66.1° | 56.6° | +5.3° |
| 2 November – 11 November | 55.5° | 51° | +2.5° |
| 12 November – 21 November | at normal | 46.7° | — |
October records over 66 years
Climate normals and records are computed from the nearest reference point — Kimballton (13 mi).
0
Harlan, Saturday, 24 October
Partly cloudy. High 75°, low 58°.
0Harlan, Sunday, 25 October
Overcast. High 69°, low 53°.
0Harlan, Monday, 26 October
Overcast. High 71°, low 52°.
0.13
Harlan, Tuesday, 27 October
Light rain. High 68°, low 57°.
0.19Harlan, Wednesday, 28 October
Rain. High 69°, low 58°.
0.77Harlan, Thursday, 29 October
Rain. High 61°, low 46°.
0.2Harlan, Friday, 30 October
Rain. High 54°, low 44°.
0.41Harlan, Saturday, 31 October
Rain. High 59°, low 54°.
0Harlan, Sunday, 1 November
Partly cloudy. High 57°, low 44°.
0Harlan, Monday, 2 November
Overcast. High 53°, low 41°.
0Harlan, Tuesday, 3 November
Overcast. High 45°, low 38°.
0
Harlan, Wednesday, 4 November
Clear. High 50°, low 37°.
0Harlan, Thursday, 5 November
Overcast. High 59°, low 38°.
0Harlan, Friday, 6 November
Clear. High 66°, low 48°.
0Harlan, Saturday, 7 November
Clear. High 60°, low 47°.
0.05
Harlan, Sunday, 8 November
Climate normal for this date — 60-year average.
0.12Harlan, Monday, 9 November
Climate normal for this date — 60-year average.
0.08Harlan, Tuesday, 10 November
Climate normal for this date — 60-year average.
0.07Harlan, Wednesday, 11 November
Climate normal for this date — 60-year average.
0.07Harlan, Thursday, 12 November
Climate normal for this date — 60-year average.
0.07Harlan, Friday, 13 November
Climate normal for this date — 60-year average.
0.03Harlan, Saturday, 14 November
Climate normal for this date — 60-year average.
0.06Harlan, 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.
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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