Weather in Mercer, IA
Mercer, Saturday, 17 October, 09:27
Clear. Feels like 40°. High 55°, low 33°.
Monthly outlook for Mercer, IA: average high 65.7°, average low 49°. That is 3.7° above the climate normal for October. Precipitation is expected on 6 days (about 2.0 inches), against a normal of 4 days and 1.6 inches. The warmest day looks like 23 October (76°), the coolest 17 October (33.2°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 17 October – 26 October | 66.9° | 60.6° | +3.5° |
| 27 October – 5 November | 63.7° | 55.3° | +4.6° |
| 6 November – 15 November | at normal | 50.3° | — |
October records over 66 years
Climate normals and records are computed from the nearest reference point — Prescott (6 mi).
0Mercer, Sunday, 18 October
Clear. High 61°, low 41°.
0Mercer, Monday, 19 October
Clear. High 64°, low 46°.
0.05
Mercer, Tuesday, 20 October
Rain. High 65°, low 47°.
0Mercer, Wednesday, 21 October
Clear. High 70°, low 53°.
0Mercer, Thursday, 22 October
Clear. High 72°, low 52°.
0.18Mercer, Friday, 23 October
Light rain. High 76°, low 59°.
0.03Mercer, Saturday, 24 October
Light rain. High 75°, low 62°.
0
Mercer, Sunday, 25 October
Mostly clear. High 62°, low 48°.
0.6Mercer, Monday, 26 October
Rain. High 70°, low 47°.
0.15Mercer, Tuesday, 27 October
Light rain. High 72°, low 61°.
0.37Mercer, Wednesday, 28 October
Light rain. High 69°, low 51°.
0.03Mercer, Thursday, 29 October
Light rain. High 57°, low 46°.
0.6Mercer, Friday, 30 October
Rain. High 70°, low 52°.
0.01Mercer, Saturday, 31 October
Light rain. High 58°, low 44°.
0
Mercer, Sunday, 1 November
Overcast. High 56°, low 43°.
0.09
Mercer, Monday, 2 November
Climate normal for this date — 60-year average.
0.09Mercer, Tuesday, 3 November
Climate normal for this date — 60-year average.
0.08Mercer, Wednesday, 4 November
Climate normal for this date — 60-year average.
0.05Mercer, Thursday, 5 November
Climate normal for this date — 60-year average.
0.06Mercer, Friday, 6 November
Climate normal for this date — 60-year average.
0.02Mercer, Saturday, 7 November
Climate normal for this date — 60-year average.
0.04Mercer, Sunday, 8 November
Climate normal for this date — 60-year average.
0.11Mercer, Monday, 9 November
Climate normal for this date — 60-year average.
0.09Mercer, Tuesday, 10 November
Climate normal for this date — 60-year average.
0.07Mercer, Wednesday, 11 November
Climate normal for this date — 60-year average.
0.06Mercer, Thursday, 12 November
Climate normal for this date — 60-year average.
0.07Mercer, Friday, 13 November
Climate normal for this date — 60-year average.
0.03Mercer, Saturday, 14 November
Climate normal for this date — 60-year average.
0.04Mercer, Sunday, 15 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 Mercer, 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 Mercer, 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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