Weather in Merrimac, WI
Merrimac, Wednesday, 21 October, 03:24
Clear. Feels like 40°. High 73°, low 43°.
Monthly outlook for Merrimac, WI: average high 57.1°, average low 42.6°. That is 2° above the climate normal for October. Precipitation is expected on 5 days (about 0.9 inches), against a normal of 5 days and 1.5 inches. The warmest day looks like 21 October (73°), the coolest 30 October (32.1°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 21 October – 30 October | 60° | 55° | +2.8° |
| 31 October – 9 November | 52.3° | 49.9° | +1.3° |
| 10 November – 19 November | at normal | 44.4° | — |
October records over 66 years
Climate normals and records are computed from the nearest reference point — Sauk City (9 mi).
0
Merrimac, Thursday, 22 October
Clear. High 72°, low 44°.
0
Merrimac, Friday, 23 October
Mostly clear. High 68°, low 52°.
0
Merrimac, Saturday, 24 October
Overcast. High 68°, low 54°.
0Merrimac, Sunday, 25 October
Overcast. High 71°, low 56°.
0.05
Merrimac, Monday, 26 October
Light rain. High 58°, low 44°.
0.38Merrimac, Tuesday, 27 October
Rain. High 44°, low 39°.
0.25Merrimac, Wednesday, 28 October
Rain. High 49°, low 42°.
0.09Merrimac, Thursday, 29 October
Light rain. High 47°, low 37°.
0Merrimac, Friday, 30 October
Clear. High 51°, low 32°.
0Merrimac, Saturday, 31 October
Overcast. High 57°, low 39°.
0.03Merrimac, Sunday, 1 November
Light rain. High 55°, low 50°.
0Merrimac, Monday, 2 November
Clear. High 54°, low 41°.
0.05Merrimac, Tuesday, 3 November
Light rain. High 46°, low 33°.
0.01Merrimac, Wednesday, 4 November
Light rain. High 50°, low 39°.
0Merrimac, Thursday, 5 November
Overcast. High 52°, low 36°.
0.08
Merrimac, Friday, 6 November
Climate normal for this date — 60-year average.
0.03Merrimac, Saturday, 7 November
Climate normal for this date — 60-year average.
0.04Merrimac, Sunday, 8 November
Climate normal for this date — 60-year average.
0.1
Merrimac, Monday, 9 November
Climate normal for this date — 60-year average.
0.13Merrimac, Tuesday, 10 November
Climate normal for this date — 60-year average.
0.07Merrimac, Wednesday, 11 November
Climate normal for this date — 60-year average.
0.06Merrimac, Thursday, 12 November
Climate normal for this date — 60-year average.
0.04Merrimac, Friday, 13 November
Climate normal for this date — 60-year average.
0.03Merrimac, Saturday, 14 November
Climate normal for this date — 60-year average.
0.06Merrimac, Sunday, 15 November
Climate normal for this date — 60-year average.
0.06Merrimac, Monday, 16 November
Climate normal for this date — 60-year average.
0.09Merrimac, Tuesday, 17 November
Climate normal for this date — 60-year average.
0.07Merrimac, Wednesday, 18 November
Climate normal for this date — 60-year average.
0.06Merrimac, Thursday, 19 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 Merrimac, WI 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 Merrimac, WI 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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