Weather in McHenry, PA
McHenry, Sunday, 11 October, 03:06
Light rain. Feels like 51°. High 58°, low 49°.
Monthly outlook for McHenry, PA: average high 57.6°, average low 39.7°. That is 1.2° above the climate normal for October. Precipitation is expected on 5 days (about 1.9 inches), against a normal of 5 days and 2.0 inches. The warmest day looks like 13 October (80.7°), the coolest 19 October (27.5°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 11 October – 20 October | 61.1° | 56.6° | +2.5° |
| 21 October – 30 October | 51.7° | 53° | -0.7° |
| 31 October – 9 November | at normal | 49.8° | — |
October records over 66 years
Climate normals and records are computed from the nearest reference point — Cummings (8 mi).
0McHenry, Monday, 12 October
Light rain. High 74°, low 48°.
0
McHenry, Tuesday, 13 October
Clear. High 81°, low 57°.
0.23McHenry, Wednesday, 14 October
Rain. High 71°, low 60°.
0
McHenry, Thursday, 15 October
Overcast. High 59°, low 45°.
0.2McHenry, Friday, 16 October
Rain. High 68°, low 42°.
0.1
McHenry, Saturday, 17 October
Snow. High 53°, low 32°.
0
McHenry, Sunday, 18 October
Partly cloudy. High 41°, low 29°.
0McHenry, Monday, 19 October
Partly cloudy. High 51°, low 27°.
0McHenry, Tuesday, 20 October
Partly cloudy. High 56°, low 31°.
0McHenry, Wednesday, 21 October
Partly cloudy. High 55°, low 34°.
0McHenry, Thursday, 22 October
Overcast. High 62°, low 39°.
0McHenry, Friday, 23 October
Light rain. High 53°, low 42°.
0McHenry, Saturday, 24 October
Partly cloudy. High 43°, low 31°.
0.08McHenry, Sunday, 25 October
Light rain. High 43°, low 34°.
0McHenry, Monday, 26 October
Overcast. High 53°, low 34°.
0.15McHenry, Tuesday, 27 October
Climate normal for this date — 60-year average.
0.09
McHenry, Wednesday, 28 October
Climate normal for this date — 60-year average.
0.17McHenry, Thursday, 29 October
Climate normal for this date — 60-year average.
0.12McHenry, Friday, 30 October
Climate normal for this date — 60-year average.
0.1McHenry, Saturday, 31 October
Climate normal for this date — 60-year average.
0.09McHenry, Sunday, 1 November
Climate normal for this date — 60-year average.
0.14McHenry, Monday, 2 November
Climate normal for this date — 60-year average.
0.07McHenry, Tuesday, 3 November
Climate normal for this date — 60-year average.
0.09McHenry, Wednesday, 4 November
Climate normal for this date — 60-year average.
0.1McHenry, Thursday, 5 November
Climate normal for this date — 60-year average.
0.07McHenry, Friday, 6 November
Climate normal for this date — 60-year average.
0.09McHenry, Saturday, 7 November
Climate normal for this date — 60-year average.
0.13McHenry, Sunday, 8 November
Climate normal for this date — 60-year average.
0.11McHenry, Monday, 9 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 McHenry, PA 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 McHenry, PA 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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