Weather in McHenry, MD
McHenry, Saturday, 10 October, 05:45
Overcast. Feels like 49°. High 62°, low 43°.
Monthly outlook for McHenry, MD: average high 57.3°, average low 41.1°. That is 0.3° below the climate normal for October. Precipitation is expected on 9 days (about 5.4 inches), against a normal of 6 days and 1.9 inches. The warmest day looks like 13 October (74.4°), the coolest 20 October (25.3°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 10 October – 19 October | 59.1° | 59.1° | +0° |
| 20 October – 29 October | 54.3° | 55° | -0.4° |
| 30 October – 8 November | at normal | 52.4° | — |
October records over 66 years
Climate normals and records are computed from the nearest reference point — Addison (15 mi).
2.2
McHenry, Sunday, 11 October
Heavy rain. High 62°, low 45°.
0.21McHenry, Monday, 12 October
Rain. High 63°, low 55°.
0.01McHenry, Tuesday, 13 October
Light rain. High 74°, low 55°.
0.11McHenry, Wednesday, 14 October
Light rain. High 67°, low 58°.
0.32McHenry, Thursday, 15 October
Rain. High 58°, low 48°.
0.67McHenry, Friday, 16 October
Rain. High 70°, low 54°.
1.3McHenry, Saturday, 17 October
Rain. High 56°, low 42°.
0.16
McHenry, Sunday, 18 October
Snow. High 40°, low 33°.
0.04McHenry, Monday, 19 October
Light snow. High 39°, low 26°.
0
McHenry, Tuesday, 20 October
Clear. High 53°, low 25°.
0McHenry, Wednesday, 21 October
Clear. High 55°, low 31°.
0McHenry, Thursday, 22 October
Clear. High 56°, low 33°.
0McHenry, Friday, 23 October
Overcast. High 54°, low 33°.
0McHenry, Saturday, 24 October
Overcast. High 55°, low 36°.
0.35McHenry, Sunday, 25 October
Rain. High 53°, low 40°.
0.11
McHenry, Monday, 26 October
Climate normal for this date — 60-year average.
0.14McHenry, Tuesday, 27 October
Climate normal for this date — 60-year average.
0.11McHenry, Wednesday, 28 October
Climate normal for this date — 60-year average.
0.21McHenry, Thursday, 29 October
Climate normal for this date — 60-year average.
0.11
McHenry, Friday, 30 October
Climate normal for this date — 60-year average.
0.09McHenry, Saturday, 31 October
Climate normal for this date — 60-year average.
0.1McHenry, Sunday, 1 November
Climate normal for this date — 60-year average.
0.15McHenry, Monday, 2 November
Climate normal for this date — 60-year average.
0.09McHenry, Tuesday, 3 November
Climate normal for this date — 60-year average.
0.12McHenry, Wednesday, 4 November
Climate normal for this date — 60-year average.
0.13McHenry, Thursday, 5 November
Climate normal for this date — 60-year average.
0.07McHenry, Friday, 6 November
Climate normal for this date — 60-year average.
0.13McHenry, Saturday, 7 November
Climate normal for this date — 60-year average.
0.12McHenry, Sunday, 8 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, MD 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, MD 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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