Weather in Lyman, IA
Lyman, Friday, 9 October, 14:26
Clear. Feels like 87°. High 87°, low 61°.
Monthly outlook for Lyman, IA: average high 66.3°, average low 50.4°. That is 2.1° above the climate normal for October. Precipitation is expected on 3 days (about 0.9 inches), against a normal of 4 days and 1.4 inches. The warmest day looks like 9 October (87.4°), the coolest 24 October (31.2°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 9 October – 18 October | 70.1° | 63.4° | +3.7° |
| 19 October – 28 October | 60° | 59.7° | +0.1° |
| 29 October – 7 November | at normal | 54.4° | — |
October records over 66 years
Climate normals and records are computed from the nearest reference point — Lewis (7 mi).
0Lyman, Saturday, 10 October
Clear. High 85°, low 65°.
0Lyman, Sunday, 11 October
Clear. High 82°, low 63°.
0Lyman, Monday, 12 October
Clear. High 86°, low 68°.
0.01
Lyman, Tuesday, 13 October
Light rain. High 68°, low 58°.
0.02Lyman, Wednesday, 14 October
Light rain. High 66°, low 58°.
0.66Lyman, Thursday, 15 October
Rain. High 67°, low 56°.
0.09Lyman, Friday, 16 October
Light rain. High 51°, low 41°.
0Lyman, Saturday, 17 October
Clear. High 48°, low 34°.
0Lyman, Sunday, 18 October
Clear. High 61°, low 38°.
0
Lyman, Monday, 19 October
Mostly clear. High 65°, low 45°.
0
Lyman, Tuesday, 20 October
Partly cloudy. High 65°, low 46°.
0.09Lyman, Wednesday, 21 October
Light rain. High 64°, low 51°.
0Lyman, Thursday, 22 October
Partly cloudy. High 67°, low 51°.
0Lyman, Friday, 23 October
Clear. High 50°, low 38°.
0Lyman, Saturday, 24 October
Clear. High 49°, low 31°.
0.05Lyman, Sunday, 25 October
Climate normal for this date — 60-year average.
0.08Lyman, Monday, 26 October
Climate normal for this date — 60-year average.
0.06Lyman, Tuesday, 27 October
Climate normal for this date — 60-year average.
0.07Lyman, Wednesday, 28 October
Climate normal for this date — 60-year average.
0.09Lyman, Thursday, 29 October
Climate normal for this date — 60-year average.
0.12Lyman, Friday, 30 October
Climate normal for this date — 60-year average.
0.11Lyman, Saturday, 31 October
Climate normal for this date — 60-year average.
0.16Lyman, Sunday, 1 November
Climate normal for this date — 60-year average.
0.08Lyman, Monday, 2 November
Climate normal for this date — 60-year average.
0.09Lyman, Tuesday, 3 November
Climate normal for this date — 60-year average.
0.07Lyman, Wednesday, 4 November
Climate normal for this date — 60-year average.
0.05Lyman, Thursday, 5 November
Climate normal for this date — 60-year average.
0.06Lyman, Friday, 6 November
Climate normal for this date — 60-year average.
0.02Lyman, Saturday, 7 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 Lyman, 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 Lyman, 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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