Weather in St. Marys, IA
St. Marys, Saturday, 24 October, 00:49
Overcast. Feels like 61°. High 76°, low 57°.
0
St. Marys, Sunday, 25 October
Mostly clear. High 76°, low 54°.
0St. Marys, Monday, 26 October
Overcast. High 74°, low 54°.
0.01
St. Marys, Tuesday, 27 October
Light rain. High 70°, low 59°.
0.07St. Marys, Wednesday, 28 October
Light rain. High 73°, low 58°.
0.09St. Marys, Thursday, 29 October
Light rain. High 74°, low 60°.
0.61St. Marys, Friday, 30 October
Rain. High 72°, low 62°.
0.55St. Marys, Saturday, 31 October
Rain. High 62°, low 56°.
0.04St. Marys, Sunday, 1 November
Light rain. High 62°, low 46°.
0
St. Marys, Monday, 2 November
Clear. High 58°, low 41°.
0St. Marys, Tuesday, 3 November
Overcast. High 52°, low 41°.
0St. Marys, Wednesday, 4 November
Overcast. High 58°, low 41°.
0St. Marys, Thursday, 5 November
Clear. High 67°, low 44°.
0St. Marys, Friday, 6 November
Mostly clear. High 70°, low 55°.
0
St. Marys, Saturday, 7 November
Partly cloudy. High 65°, low 51°.
0St. Marys, Sunday, 8 November
Overcast. High 69°, low 52°.
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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