Weather in St. Marys, IA
St. Marys, Tuesday, 27 October, 06:54
Light rain. Feels like 57°. High 69°, low 57°.
0St. Marys, Wednesday, 28 October
Light rain. High 76°, low 56°.
0.01St. Marys, Thursday, 29 October
Light rain. High 67°, low 53°.
0.18St. Marys, Friday, 30 October
Light rain. High 68°, low 51°.
0St. Marys, Saturday, 31 October
Light rain. High 68°, low 58°.
0.01St. Marys, Sunday, 1 November
Light rain. High 67°, low 57°.
0
St. Marys, Monday, 2 November
Overcast. High 58°, low 48°.
0.02St. Marys, Tuesday, 3 November
Light rain. High 53°, low 50°.
0St. Marys, Wednesday, 4 November
Overcast. High 53°, low 44°.
0
St. Marys, Thursday, 5 November
Clear. High 58°, low 39°.
0St. Marys, Friday, 6 November
Clear. High 49°, low 37°.
0St. Marys, Saturday, 7 November
Overcast. High 49°, low 37°.
0.02St. Marys, Sunday, 8 November
Light rain. High 57°, low 45°.
0.04St. Marys, Monday, 9 November
Light rain. High 59°, low 50°.
0St. Marys, Tuesday, 10 November
Overcast. High 60°, low 49°.
0St. Marys, Wednesday, 11 November
Overcast. High 56°, low 43°.
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, 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 St. Marys, 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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