Monthly outlook for Riley Center, MI: average high 80°, average low 57.9°. That is 1.3° above the climate normal for August. Precipitation is expected on 4 days (about 0.9 inches), against a normal of 5 days and 1.5 inches. The warmest day looks like 10 August (88.7°), the coolest 22 August (50.1°).
80°/57.9°
Average high / low
+1.3°
Above normal
4 / 5
Wet days / normal
0.9 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
9 August – 18 August
81.3°
78°
+1.8°
19 August – 28 August
77.8°
77.2°
+0.3°
29 August – 7 September
at normal
75.8°
—
August records over 66 years
95.9°8 August 2001All-time high
43.7°29 August 1982All-time low
Climate normals and records are computed from the nearest reference point — Memphis (5 mi).
Mon, 1089° / 68°0.11
89 °
Riley Center, Monday, 10 August
Rain. High 89°, low 68°.
Pressure29.91 inHg
Wind9.6 mph W
Humidity92%
Visibility6.2 mi
Dew point70°
Tue, 1182° / 64°0.57
82 °
Riley Center, Tuesday, 11 August
Heavy rain. High 82°, low 64°.
Pressure29.83 inHg
Wind12.2 mph S
Humidity58%
Visibility6.2 mi
Dew point65°
Wed, 1282° / 59°0.06
82 °
Riley Center, Wednesday, 12 August
Light rain. High 82°, low 59°.
Pressure29.77 inHg
Wind7.1 mph NW
Humidity63%
Visibility6.2 mi
Dew point64°
Thu, 1371° / 50°0
71 °
Riley Center, Thursday, 13 August
Overcast. High 71°, low 50°.
Pressure30.00 inHg
Wind14.9 mph NW
Humidity42%
Visibility—
Dew point44°
Fri, 1475° / 53°0
75 °
Riley Center, Friday, 14 August
Mostly clear. High 75°, low 53°.
Pressure30.06 inHg
Wind9.5 mph NW
Humidity41%
Visibility—
Dew point47°
Sat, 1577° / 53°0
77 °
Riley Center, Saturday, 15 August
Overcast. High 77°, low 53°.
Pressure30.27 inHg
Wind7.1 mph NE
Humidity41%
Visibility—
Dew point49°
Sun, 1680° / 55°0
80 °
Riley Center, Sunday, 16 August
Overcast. High 80°, low 55°.
Pressure30.15 inHg
Wind11.8 mph S
Humidity38%
Visibility—
Dew point49°
Mon, 1783° / 62°0
83 °
Riley Center, Monday, 17 August
Overcast. High 83°, low 62°.
Pressure30.00 inHg
Wind8.9 mph S
Humidity39%
Visibility—
Dew point52°
Tue, 1887° / 63°0
87 °
Riley Center, Tuesday, 18 August
Partly cloudy. High 87°, low 63°.
Pressure29.94 inHg
Wind12 mph S
Humidity39%
Visibility—
Dew point56°
Wed, 1974° / 61°0.1
74 °
Riley Center, Wednesday, 19 August
Light rain. High 74°, low 61°.
Pressure29.77 inHg
Wind21.6 mph W
Humidity69%
Visibility—
Dew point60°
Thu, 2076° / 55°0
76 °
Riley Center, Thursday, 20 August
Overcast. High 76°, low 55°.
Pressure29.88 inHg
Wind16.6 mph NW
Humidity44%
Visibility—
Dew point49°
Fri, 2174° / 51°0
74 °
Riley Center, Friday, 21 August
Overcast. High 74°, low 51°.
Pressure30.06 inHg
Wind12.6 mph NE
Humidity37%
Visibility—
Dew point44°
Sat, 2276° / 50°0
76 °
Riley Center, Saturday, 22 August
Overcast. High 76°, low 50°.
Pressure29.97 inHg
Wind13.1 mph S
Humidity38%
Visibility—
Dew point46°
Sun, 2387° / 63°0
87 °
Riley Center, Sunday, 23 August
Light rain. High 87°, low 63°.
Pressure29.74 inHg
Wind25.2 mph W
Humidity47%
Visibility—
Dew point59°
Mon, 2481° / 55°0
81 °
Riley Center, Monday, 24 August
Partly cloudy. High 81°, low 55°.
Pressure30.00 inHg
Wind12.2 mph NW
Humidity33%
Visibility—
Dew point46°
From day 17 onward the outlook is built from 60-year climate statistics
Tue, 2578° / 62°0.08
78 °
Riley Center, Tuesday, 25 August
Climate normal for this date — 60-year average.
Average high78°
Average low62°
Average precipitation0.08 in
Chance of precipitation23%
Record high90° (2021)
Record low48° (1977)
Wed, 2678° / 62°0.11
78 °
Riley Center, Wednesday, 26 August
Climate normal for this date — 60-year average.
Average high78°
Average low62°
Average precipitation0.11 in
Chance of precipitation33%
Record high89° (2024)
Record low49° (2017)
Thu, 2778° / 63°0.12
78 °
Riley Center, Thursday, 27 August
Climate normal for this date — 60-year average.
Average high78°
Average low63°
Average precipitation0.12 in
Chance of precipitation40%
Record high93° (1973)
Record low49° (2025)
Fri, 2877° / 63°0.17
77 °
Riley Center, Friday, 28 August
Climate normal for this date — 60-year average.
Average high77°
Average low63°
Average precipitation0.17 in
Chance of precipitation43%
Record high93° (1973)
Record low47° (1986)
Sat, 2977° / 62°0.1
77 °
Riley Center, Saturday, 29 August
Climate normal for this date — 60-year average.
Average high77°
Average low62°
Average precipitation0.1 in
Chance of precipitation32%
Record high90° (1973)
Record low44° (1982)
Sun, 3076° / 61°0.07
76 °
Riley Center, Sunday, 30 August
Climate normal for this date — 60-year average.
Average high76°
Average low61°
Average precipitation0.07 in
Chance of precipitation27%
Record high90° (1991)
Record low45° (2025)
Mon, 3176° / 60°0.05
76 °
Riley Center, Monday, 31 August
Climate normal for this date — 60-year average.
Average high76°
Average low60°
Average precipitation0.05 in
Chance of precipitation20%
Record high90° (2012)
Record low47° (2009)
Tue, 0176° / 60°0.08
76 °
Riley Center, Tuesday, 1 September
Climate normal for this date — 60-year average.
Average high76°
Average low60°
Average precipitation0.08 in
Chance of precipitation28%
Record high89° (2010)
Record low47° (2009)
Wed, 0276° / 61°0.08
76 °
Riley Center, Wednesday, 2 September
Climate normal for this date — 60-year average.
Average high76°
Average low61°
Average precipitation0.08 in
Chance of precipitation37%
Record high92° (2011)
Record low47° (1965)
Thu, 0376° / 60°0.09
76 °
Riley Center, Thursday, 3 September
Climate normal for this date — 60-year average.
Average high76°
Average low60°
Average precipitation0.09 in
Chance of precipitation28%
Record high90° (2011)
Record low47° (1994)
Fri, 0475° / 60°0.09
75 °
Riley Center, Friday, 4 September
Climate normal for this date — 60-year average.
Average high75°
Average low60°
Average precipitation0.09 in
Chance of precipitation30%
Record high89° (1973)
Record low48° (1974)
Sat, 0575° / 60°0.05
75 °
Riley Center, Saturday, 5 September
Climate normal for this date — 60-year average.
Average high75°
Average low60°
Average precipitation0.05 in
Chance of precipitation23%
Record high89° (2014)
Record low48° (2025)
Sun, 0675° / 59°0.06
75 °
Riley Center, Sunday, 6 September
Climate normal for this date — 60-year average.
Average high75°
Average low59°
Average precipitation0.06 in
Chance of precipitation27%
Record high89° (1998)
Record low44° (1984)
Mon, 0775° / 59°0.11
75 °
Riley Center, Monday, 7 September
Climate normal for this date — 60-year average.
Average high75°
Average low59°
Average precipitation0.11 in
Chance of precipitation38%
Record high88° (2015)
Record low44° (2025)
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 Riley Center, 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 Riley Center, 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.