Weather in Lannon, WI
Lannon, Monday, 19 October, 17:03
Overcast. Feels like 61°. High 65°, low 41°.
Monthly outlook for Lannon, WI: average high 56.1°, average low 39.5°. That is 1.2° above the climate normal for October. Precipitation is expected on 0 days (about 0.0 inches), against a normal of 5 days and 1.5 inches. The warmest day looks like 20 October (66.2°), the coolest 28 October (24.8°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 19 October – 28 October | 58.4° | 55.1° | +1.8° |
| 29 October – 7 November | 52.4° | 51.1° | +0.7° |
| 8 November – 17 November | at normal | 45.7° | — |
October records over 66 years
Climate normals and records are computed from the nearest reference point — Thiensville (11 mi).
0
Lannon, Tuesday, 20 October
Clear. High 66°, low 42°.
0Lannon, Wednesday, 21 October
Clear. High 66°, low 44°.
0
Lannon, Thursday, 22 October
Partly cloudy. High 64°, low 48°.
0Lannon, Friday, 23 October
Overcast. High 59°, low 44°.
0Lannon, Saturday, 24 October
Overcast. High 60°, low 45°.
0Lannon, Sunday, 25 October
Overcast. High 63°, low 48°.
0Lannon, Monday, 26 October
Clear. High 53°, low 41°.
0Lannon, Tuesday, 27 October
Overcast. High 47°, low 32°.
0Lannon, Wednesday, 28 October
Clear. High 41°, low 25°.
0Lannon, Thursday, 29 October
Clear. High 47°, low 26°.
0Lannon, Friday, 30 October
Overcast. High 52°, low 29°.
0Lannon, Saturday, 31 October
Overcast. High 58°, low 41°.
0Lannon, Sunday, 1 November
Overcast. High 58°, low 46°.
0Lannon, Monday, 2 November
Overcast. High 48°, low 41°.
0
Lannon, Tuesday, 3 November
Mostly clear. High 51°, low 40°.
0.09Lannon, Wednesday, 4 November
Climate normal for this date — 60-year average.
0.1Lannon, Thursday, 5 November
Climate normal for this date — 60-year average.
0.09Lannon, Friday, 6 November
Climate normal for this date — 60-year average.
0.04Lannon, Saturday, 7 November
Climate normal for this date — 60-year average.
0.05Lannon, Sunday, 8 November
Climate normal for this date — 60-year average.
0.11
Lannon, Monday, 9 November
Climate normal for this date — 60-year average.
0.12Lannon, Tuesday, 10 November
Climate normal for this date — 60-year average.
0.07Lannon, Wednesday, 11 November
Climate normal for this date — 60-year average.
0.06Lannon, Thursday, 12 November
Climate normal for this date — 60-year average.
0.05Lannon, Friday, 13 November
Climate normal for this date — 60-year average.
0.04Lannon, Saturday, 14 November
Climate normal for this date — 60-year average.
0.07Lannon, Sunday, 15 November
Climate normal for this date — 60-year average.
0.05Lannon, Monday, 16 November
Climate normal for this date — 60-year average.
0.08Lannon, Tuesday, 17 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 Lannon, 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 Lannon, 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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