Weather in St. Marys, IA
St. Marys, Friday, 23 October, 07:53
Partly cloudy. Feels like 54°. High 76°, low 55°.
0
St. Marys, Saturday, 24 October
Clear. High 76°, low 55°.
0
St. Marys, Sunday, 25 October
Overcast. High 75°, low 55°.
0St. Marys, Monday, 26 October
Overcast. High 71°, low 54°.
0.02
St. Marys, Tuesday, 27 October
Light rain. High 71°, low 59°.
0St. Marys, Wednesday, 28 October
Overcast. High 67°, low 59°.
0.95St. Marys, Thursday, 29 October
Rain. High 60°, low 48°.
0.63St. Marys, Friday, 30 October
Rain. High 49°, low 47°.
0St. Marys, Saturday, 31 October
Overcast. High 46°, low 43°.
0St. Marys, Sunday, 1 November
Light rain. High 42°, low 39°.
0
St. Marys, Monday, 2 November
Mostly clear. High 51°, low 35°.
0St. Marys, Tuesday, 3 November
Clear. High 55°, low 37°.
0St. Marys, Wednesday, 4 November
Clear. High 56°, low 37°.
0St. Marys, Thursday, 5 November
Clear. High 59°, low 39°.
0St. Marys, Friday, 6 November
Overcast. High 61°, low 46°.
0St. Marys, Saturday, 7 November
Overcast. High 56°, low 46°.
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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