Weather in St. Marys, IA
St. Marys, Sunday, 25 October, 02:22
Overcast. Feels like 56°. High 75°, low 53°.
0.11
St. Marys, Monday, 26 October
Rain. High 73°, low 52°.
0St. Marys, Tuesday, 27 October
Overcast. High 69°, low 60°.
0
St. Marys, Wednesday, 28 October
Clear. High 74°, low 58°.
0.41St. Marys, Thursday, 29 October
Rain. High 65°, low 60°.
0.16St. Marys, Friday, 30 October
Light rain. High 74°, low 60°.
0.74St. Marys, Saturday, 31 October
Rain. High 65°, low 57°.
0.04St. Marys, Sunday, 1 November
Light rain. High 69°, low 59°.
0
St. Marys, Monday, 2 November
Partly cloudy. High 68°, low 55°.
0.09St. Marys, Tuesday, 3 November
Light rain. High 59°, low 53°.
0.01St. Marys, Wednesday, 4 November
Light rain. High 63°, low 51°.
0St. Marys, Thursday, 5 November
Overcast. High 61°, low 47°.
0St. Marys, Friday, 6 November
Partly cloudy. High 72°, low 49°.
0St. Marys, Saturday, 7 November
Overcast. High 71°, low 55°.
0St. Marys, Sunday, 8 November
Overcast. High 59°, low 48°.
0St. Marys, Monday, 9 November
Clear. High 51°, low 41°.
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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