Weather in Crystal Lake, IA
Crystal Lake, Wednesday, 11 November, 21:46
Clear. Feels like 35°. High 54°, low 40°.
Monthly outlook for Crystal Lake, IA: average high 44.2°, average low 33.6°. That is 1.4° above the climate normal for November. Precipitation is expected on 3 days (about 1.4 inches), against a normal of 4 days and 1.0 inches. The warmest day looks like 19 November (57.7°), the coolest 26 November (22.6°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 11 November – 20 November | 49° | 43.4° | +3.1° |
| 21 November – 30 November | 36.2° | 37.3° | -0.7° |
| 1 December – 10 December | at normal | 31.6° | — |
November records over 66 years
Climate normals and records are computed from the nearest reference point — Woden (6 mi).
0
Crystal Lake, Thursday, 12 November
Overcast. High 40°, low 30°.
0Crystal Lake, Friday, 13 November
Overcast. High 39°, low 26°.
0
Crystal Lake, Saturday, 14 November
Clear. High 41°, low 25°.
0
Crystal Lake, Sunday, 15 November
Mostly clear. High 47°, low 27°.
0Crystal Lake, Monday, 16 November
Clear. High 52°, low 33°.
0Crystal Lake, Tuesday, 17 November
Overcast. High 53°, low 40°.
0Crystal Lake, Wednesday, 18 November
Overcast. High 55°, low 42°.
0.02
Crystal Lake, Thursday, 19 November
Light rain. High 58°, low 44°.
0.02Crystal Lake, Friday, 20 November
Light rain. High 51°, low 43°.
0.21Crystal Lake, Saturday, 21 November
Rain. High 45°, low 41°.
1.09Crystal Lake, Sunday, 22 November
Heavy rain. High 42°, low 36°.
0
Crystal Lake, Monday, 23 November
Partly cloudy. High 41°, low 33°.
0Crystal Lake, Tuesday, 24 November
Overcast. High 32°, low 27°.
0Crystal Lake, Wednesday, 25 November
Overcast. High 31°, low 25°.
0Crystal Lake, Thursday, 26 November
Overcast. High 27°, low 23°.
0.08Crystal Lake, Friday, 27 November
Climate normal for this date — 60-year average.
0.08Crystal Lake, Saturday, 28 November
Climate normal for this date — 60-year average.
0.07Crystal Lake, Sunday, 29 November
Climate normal for this date — 60-year average.
0.05Crystal Lake, Monday, 30 November
Climate normal for this date — 60-year average.
0.07Crystal Lake, Tuesday, 1 December
Climate normal for this date — 60-year average.
0.03Crystal Lake, Wednesday, 2 December
Climate normal for this date — 60-year average.
0.06Crystal Lake, Thursday, 3 December
Climate normal for this date — 60-year average.
0.03Crystal Lake, Friday, 4 December
Climate normal for this date — 60-year average.
0.04Crystal Lake, Saturday, 5 December
Climate normal for this date — 60-year average.
0.03Crystal Lake, Sunday, 6 December
Climate normal for this date — 60-year average.
0.03Crystal Lake, Monday, 7 December
Climate normal for this date — 60-year average.
0.04Crystal Lake, Tuesday, 8 December
Climate normal for this date — 60-year average.
0.05Crystal Lake, Wednesday, 9 December
Climate normal for this date — 60-year average.
0.03Crystal Lake, Thursday, 10 December
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 Crystal Lake, 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 Crystal Lake, 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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