Weather in St. Marys, IA
St. Marys, Friday, 30 October, 13:39
Overcast. Feels like 59°. High 61°, low 50°.
0.04
St. Marys, Saturday, 31 October
Light rain. High 66°, low 56°.
0St. Marys, Sunday, 1 November
Overcast. High 69°, low 57°.
0.22St. Marys, Monday, 2 November
Light rain. High 66°, low 60°.
0.3St. Marys, Tuesday, 3 November
Light rain. High 64°, low 55°.
0.02St. Marys, Wednesday, 4 November
Light rain. High 58°, low 50°.
0
St. Marys, Thursday, 5 November
Clear. High 60°, low 45°.
0St. Marys, Friday, 6 November
Overcast. High 59°, low 49°.
0St. Marys, Saturday, 7 November
Overcast. High 55°, low 49°.
0.11St. Marys, Sunday, 8 November
Light rain. High 46°, low 41°.
0.24St. Marys, Monday, 9 November
Light rain. High 41°, low 39°.
0.03St. Marys, Tuesday, 10 November
Light rain. High 41°, low 40°.
0
St. Marys, Wednesday, 11 November
Mostly clear. High 48°, low 36°.
0.13St. Marys, Thursday, 12 November
Light rain. High 49°, low 36°.
0.98St. Marys, Friday, 13 November
Rain. High 44°, low 42°.
0.21St. Marys, Saturday, 14 November
Light rain. High 42°, low 38°.
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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