Weather in Letts, IA
Letts, Thursday, 8 October, 03:08
Overcast. Feels like 51°. High 76°, low 51°.
Monthly outlook for Letts, IA: average high 68.4°, average low 50°. That is 3.1° above the climate normal for October. Precipitation is expected on 4 days (about 0.3 inches), against a normal of 4 days and 1.5 inches. The warmest day looks like 15 October (88.6°), the coolest 21 October (37.1°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 8 October – 17 October | 73° | 64.1° | +5° |
| 18 October – 27 October | 60.7° | 59.5° | +0.7° |
| 28 October – 6 November | at normal | 55.1° | — |
October records over 66 years
0.1
Letts, Friday, 9 October
Rain. High 80°, low 53°.
0
Letts, Saturday, 10 October
Clear. High 82°, low 62°.
0Letts, Sunday, 11 October
Clear. High 75°, low 59°.
0Letts, Monday, 12 October
Clear. High 83°, low 60°.
0
Letts, Tuesday, 13 October
Partly cloudy. High 61°, low 48°.
0Letts, Wednesday, 14 October
Overcast. High 62°, low 44°.
0.07Letts, Thursday, 15 October
Light rain. High 89°, low 66°.
0.08Letts, Friday, 16 October
Light rain. High 75°, low 50°.
0Letts, Saturday, 17 October
Overcast. High 48°, low 45°.
0
Letts, Sunday, 18 October
Mostly clear. High 55°, low 42°.
0Letts, Monday, 19 October
Mostly clear. High 66°, low 44°.
0Letts, Tuesday, 20 October
Clear. High 60°, low 45°.
0Letts, Wednesday, 21 October
Clear. High 58°, low 37°.
0Letts, Thursday, 22 October
Partly cloudy. High 68°, low 45°.
0.06Letts, Friday, 23 October
Light rain. High 56°, low 50°.
0.15Letts, Saturday, 24 October
Climate normal for this date — 60-year average.
0.07Letts, Sunday, 25 October
Climate normal for this date — 60-year average.
0.11Letts, Monday, 26 October
Climate normal for this date — 60-year average.
0.07Letts, Tuesday, 27 October
Climate normal for this date — 60-year average.
0.04Letts, Wednesday, 28 October
Climate normal for this date — 60-year average.
0.06Letts, Thursday, 29 October
Climate normal for this date — 60-year average.
0.09
Letts, Friday, 30 October
Climate normal for this date — 60-year average.
0.14Letts, Saturday, 31 October
Climate normal for this date — 60-year average.
0.17Letts, Sunday, 1 November
Climate normal for this date — 60-year average.
0.09Letts, Monday, 2 November
Climate normal for this date — 60-year average.
0.07Letts, Tuesday, 3 November
Climate normal for this date — 60-year average.
0.11Letts, Wednesday, 4 November
Climate normal for this date — 60-year average.
0.11Letts, Thursday, 5 November
Climate normal for this date — 60-year average.
0.07Letts, Friday, 6 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 Letts, 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 Letts, 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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