Weather in Bay St. Louis, MS
Bay St. Louis, Sunday, 9 August, 09:35
Clear. Feels like 97°. High 91°, low 75°.
Monthly outlook for Bay St. Louis, MS: average high 93.9°, average low 78.3°. That is 3.7° above the climate normal for August. Precipitation is expected on 4 days (about 0.7 inches), against a normal of 10 days and 3.0 inches. The warmest day looks like 20 August (97°), the coolest 9 August (74.6°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 9 August – 18 August | 93.4° | 87.1° | +3.5° |
| 19 August – 28 August | 94.8° | 87.2° | +4.2° |
| 29 August – 7 September | at normal | 85.4° | — |
August records over 66 years
Climate normals and records are computed from the nearest reference point — Pass Christian (8 mi).
0.03
Bay St. Louis, Monday, 10 August
Light rain. High 93°, low 77°.
0
Bay St. Louis, Tuesday, 11 August
Mostly clear. High 91°, low 78°.
0Bay St. Louis, Wednesday, 12 August
Clear. High 92°, low 79°.
0
Bay St. Louis, Thursday, 13 August
Overcast. High 93°, low 79°.
0Bay St. Louis, Friday, 14 August
Clear. High 92°, low 79°.
0Bay St. Louis, Saturday, 15 August
Light rain. High 94°, low 78°.
0.02Bay St. Louis, Sunday, 16 August
Light rain. High 95°, low 78°.
0.04Bay St. Louis, Monday, 17 August
Light rain. High 96°, low 78°.
0
Bay St. Louis, Tuesday, 18 August
Partly cloudy. High 97°, low 80°.
0Bay St. Louis, Wednesday, 19 August
Clear. High 96°, low 80°.
0Bay St. Louis, Thursday, 20 August
Light rain. High 97°, low 79°.
0.04Bay St. Louis, Friday, 21 August
Light rain. High 95°, low 80°.
0Bay St. Louis, Saturday, 22 August
Overcast. High 94°, low 80°.
0.54Bay St. Louis, Sunday, 23 August
Heavy rain. High 96°, low 78°.
0.04Bay St. Louis, Monday, 24 August
Light rain. High 90°, low 76°.
0.16
Bay St. Louis, Tuesday, 25 August
Climate normal for this date — 60-year average.
0.17Bay St. Louis, Wednesday, 26 August
Climate normal for this date — 60-year average.
0.17Bay St. Louis, Thursday, 27 August
Climate normal for this date — 60-year average.
0.22Bay St. Louis, Friday, 28 August
Climate normal for this date — 60-year average.
0.46Bay St. Louis, Saturday, 29 August
Climate normal for this date — 60-year average.
0.37Bay St. Louis, Sunday, 30 August
Climate normal for this date — 60-year average.
0.17Bay St. Louis, Monday, 31 August
Climate normal for this date — 60-year average.
0.2Bay St. Louis, Tuesday, 1 September
Climate normal for this date — 60-year average.
0.22Bay St. Louis, Wednesday, 2 September
Climate normal for this date — 60-year average.
0.23Bay St. Louis, Thursday, 3 September
Climate normal for this date — 60-year average.
0.26Bay St. Louis, Friday, 4 September
Climate normal for this date — 60-year average.
0.28Bay St. Louis, Saturday, 5 September
Climate normal for this date — 60-year average.
0.26Bay St. Louis, Sunday, 6 September
Climate normal for this date — 60-year average.
0.17Bay St. Louis, Monday, 7 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 Bay St. Louis, MS 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 Bay St. Louis, MS 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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