Weather in South Riley, MI
South Riley, Sunday, 9 August, 05:56
Clear. Feels like 58°. High 86°, low 59°.
Monthly outlook for South Riley, MI: average high 86.1°, average low 61.9°. That is 4.4° above the climate normal for August. Precipitation is expected on 3 days (about 0.6 inches), against a normal of 5 days and 1.7 inches. The warmest day looks like 20 August (101.5°), the coolest 14 August (51.2°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 9 August – 18 August | 82.4° | 78.5° | +2.2° |
| 19 August – 28 August | 92.2° | 78° | +7.9° |
| 29 August – 7 September | at normal | 76.4° | — |
August records over 66 years
Climate normals and records are computed from the nearest reference point — St. Johns (11 mi).
0.26
South Riley, Monday, 10 August
Rain. High 87°, low 70°.
0.26South Riley, Tuesday, 11 August
Heavy rain. High 85°, low 62°.
0
South Riley, Wednesday, 12 August
Clear. High 84°, low 63°.
0
South Riley, Thursday, 13 August
Overcast. High 76°, low 57°.
0South Riley, Friday, 14 August
Clear. High 77°, low 51°.
0South Riley, Saturday, 15 August
Overcast. High 79°, low 51°.
0South Riley, Sunday, 16 August
Overcast. High 79°, low 62°.
0
South Riley, Monday, 17 August
Partly cloudy. High 85°, low 62°.
0South Riley, Tuesday, 18 August
Overcast. High 87°, low 58°.
0South Riley, Wednesday, 19 August
Overcast. High 87°, low 61°.
0South Riley, Thursday, 20 August
Overcast. High 101°, low 70°.
0South Riley, Friday, 21 August
Clear. High 97°, low 71°.
0South Riley, Saturday, 22 August
Clear. High 97°, low 62°.
0.02South Riley, Sunday, 23 August
Light rain. High 99°, low 66°.
0.04South Riley, Monday, 24 August
Light rain. High 72°, low 65°.
0.05South Riley, Tuesday, 25 August
Climate normal for this date — 60-year average.
0.14
South Riley, Wednesday, 26 August
Climate normal for this date — 60-year average.
0.11South Riley, Thursday, 27 August
Climate normal for this date — 60-year average.
0.13South Riley, Friday, 28 August
Climate normal for this date — 60-year average.
0.11South Riley, Saturday, 29 August
Climate normal for this date — 60-year average.
0.06South Riley, Sunday, 30 August
Climate normal for this date — 60-year average.
0.1
South Riley, Monday, 31 August
Climate normal for this date — 60-year average.
0.09South Riley, Tuesday, 1 September
Climate normal for this date — 60-year average.
0.07South Riley, Wednesday, 2 September
Climate normal for this date — 60-year average.
0.07South Riley, Thursday, 3 September
Climate normal for this date — 60-year average.
0.06South Riley, Friday, 4 September
Climate normal for this date — 60-year average.
0.07South Riley, Saturday, 5 September
Climate normal for this date — 60-year average.
0.07South Riley, Sunday, 6 September
Climate normal for this date — 60-year average.
0.12South Riley, 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 South Riley, MI 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 South Riley, MI 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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