Weather in St. Mary, MO
St. Mary, Saturday, 8 August, 22:17
Clear. Feels like 79°. High 90°, low 71°.
Monthly outlook for St. Mary, MO: average high 90.6°, average low 70.4°. That is 2.3° above the climate normal for August. Precipitation is expected on 9 days (about 3.2 inches), against a normal of 5 days and 1.6 inches. The warmest day looks like 11 August (105.2°), the coolest 21 August (61.2°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 8 August – 17 August | 92.2° | 86.4° | +3.2° |
| 18 August – 27 August | 88° | 86.8° | +0.7° |
| 28 August – 6 September | at normal | 84.5° | — |
August records over 66 years
0
St. Mary, Sunday, 9 August
Mostly clear. High 97°, low 72°.
0
St. Mary, Monday, 10 August
Partly cloudy. High 102°, low 78°.
0St. Mary, Tuesday, 11 August
Mostly clear. High 105°, low 79°.
0.11
St. Mary, Wednesday, 12 August
Light rain. High 95°, low 75°.
2.12St. Mary, Thursday, 13 August
Heavy rain. High 89°, low 72°.
0.14St. Mary, Friday, 14 August
Rain. High 81°, low 72°.
0.2St. Mary, Saturday, 15 August
Light rain. High 82°, low 68°.
0.06St. Mary, Sunday, 16 August
Light rain. High 90°, low 69°.
0.26St. Mary, Monday, 17 August
Rain. High 90°, low 72°.
0.09St. Mary, Tuesday, 18 August
Light rain. High 81°, low 71°.
0
St. Mary, Wednesday, 19 August
Overcast. High 92°, low 69°.
0
St. Mary, Thursday, 20 August
Clear. High 80°, low 62°.
0.1St. Mary, Friday, 21 August
Light rain. High 77°, low 61°.
0.08St. Mary, Saturday, 22 August
Light rain. High 100°, low 64°.
0.02St. Mary, Sunday, 23 August
Light rain. High 99°, low 72°.
0.08St. Mary, Monday, 24 August
Climate normal for this date — 60-year average.
0.04St. Mary, Tuesday, 25 August
Climate normal for this date — 60-year average.
0.09St. Mary, Wednesday, 26 August
Climate normal for this date — 60-year average.
0.12St. Mary, Thursday, 27 August
Climate normal for this date — 60-year average.
0.09
St. Mary, Friday, 28 August
Climate normal for this date — 60-year average.
0.11St. Mary, Saturday, 29 August
Climate normal for this date — 60-year average.
0.13St. Mary, Sunday, 30 August
Climate normal for this date — 60-year average.
0.09St. Mary, Monday, 31 August
Climate normal for this date — 60-year average.
0.11St. Mary, Tuesday, 1 September
Climate normal for this date — 60-year average.
0.11St. Mary, Wednesday, 2 September
Climate normal for this date — 60-year average.
0.08St. Mary, Thursday, 3 September
Climate normal for this date — 60-year average.
0.13St. Mary, Friday, 4 September
Climate normal for this date — 60-year average.
0.13St. Mary, Saturday, 5 September
Climate normal for this date — 60-year average.
0.03St. Mary, Sunday, 6 September
Climate normal for this date — 60-year average.
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. Mary, MO 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. Mary, MO 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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