Weather in St. Marys, OH
St. Marys, Saturday, 31 October, 00:20
Overcast. Feels like 51°. High 64°, low 47°.
Monthly outlook for St. Marys, OH: average high 59.7°, average low 46.5°. That is 3.7° above the climate normal for October. Precipitation is expected on 4 days (about 1.0 inches), against a normal of 5 days and 1.6 inches. The warmest day looks like 3 November (71.1°), the coolest 15 November (29.3°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 31 October – 9 November | 63.6° | 55° | +4.8° |
| 10 November – 19 November | 53.1° | 49.5° | +2° |
| 20 November – 29 November | at normal | 46.1° | — |
October records over 66 years
Climate normals and records are computed from the nearest reference point — Maria Stein (11 mi).
0St. Marys, Sunday, 1 November
Overcast. High 70°, low 53°.
0St. Marys, Monday, 2 November
Overcast. High 65°, low 55°.
0St. Marys, Tuesday, 3 November
Overcast. High 71°, low 56°.
0.63
St. Marys, Wednesday, 4 November
Rain. High 69°, low 60°.
0.19St. Marys, Thursday, 5 November
Light rain. High 66°, low 55°.
0.02St. Marys, Friday, 6 November
Light rain. High 56°, low 52°.
0
St. Marys, Saturday, 7 November
Clear. High 57°, low 45°.
0St. Marys, Sunday, 8 November
Overcast. High 58°, low 43°.
0St. Marys, Monday, 9 November
Clear. High 59°, low 44°.
0St. Marys, Tuesday, 10 November
Clear. High 62°, low 45°.
0
St. Marys, Wednesday, 11 November
Partly cloudy. High 64°, low 47°.
0
St. Marys, Thursday, 12 November
Mostly clear. High 59°, low 43°.
0.05St. Marys, Friday, 13 November
Light rain. High 49°, low 37°.
0.09
St. Marys, Saturday, 14 November
Light snow. High 40°, low 33°.
0St. Marys, Sunday, 15 November
Partly cloudy. High 44°, low 29°.
0.09St. Marys, Monday, 16 November
Climate normal for this date — 60-year average.
0.12St. Marys, Tuesday, 17 November
Climate normal for this date — 60-year average.
0.11St. Marys, Wednesday, 18 November
Climate normal for this date — 60-year average.
0.09
St. Marys, Thursday, 19 November
Climate normal for this date — 60-year average.
0.09St. Marys, Friday, 20 November
Climate normal for this date — 60-year average.
0.09St. Marys, Saturday, 21 November
Climate normal for this date — 60-year average.
0.1St. Marys, Sunday, 22 November
Climate normal for this date — 60-year average.
0.1St. Marys, Monday, 23 November
Climate normal for this date — 60-year average.
0.11St. Marys, Tuesday, 24 November
Climate normal for this date — 60-year average.
0.18St. Marys, Wednesday, 25 November
Climate normal for this date — 60-year average.
0.11St. Marys, Thursday, 26 November
Climate normal for this date — 60-year average.
0.17St. Marys, Friday, 27 November
Climate normal for this date — 60-year average.
0.19St. Marys, Saturday, 28 November
Climate normal for this date — 60-year average.
0.07St. Marys, Sunday, 29 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 St. Marys, OH 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 St. Marys, OH 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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