Monthly outlook for Marysville, MI: average high 80.3°, average low 59.2°. That is 1.5° above the climate normal for August. Precipitation is expected on 4 days (about 0.8 inches), against a normal of 5 days and 1.4 inches. The warmest day looks like 23 August (91.1°), the coolest 22 August (50.4°).
80.3°/59.2°
Average high / low
+1.5°
Above normal
4 / 5
Wet days / normal
0.8 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
9 August – 18 August
81.4°
78.1°
+1.8°
19 August – 28 August
78.4°
77.1°
+0.7°
29 August – 7 September
at normal
75.8°
—
August records over 66 years
96.3°8 August 2001All-time high
46.6°30 August 2025All-time low
Mon, 1089° / 70°0.1
89 °
Marysville, Monday, 10 August
Rain. High 89°, low 70°.
Pressure29.91 inHg
Wind10 mph W
Humidity91%
Visibility6.2 mi
Dew point70°
Tue, 1184° / 64°0.49
84 °
Marysville, Tuesday, 11 August
Heavy rain. High 84°, low 64°.
Pressure29.85 inHg
Wind10.1 mph S
Humidity55%
Visibility6.2 mi
Dew point65°
Wed, 1281° / 63°0.09
81 °
Marysville, Wednesday, 12 August
Light rain. High 81°, low 63°.
Pressure29.77 inHg
Wind6.6 mph NW
Humidity63%
Visibility6.2 mi
Dew point64°
Thu, 1372° / 52°0
72 °
Marysville, Thursday, 13 August
Overcast. High 72°, low 52°.
Pressure30.00 inHg
Wind15.3 mph N
Humidity43%
Visibility—
Dew point46°
Fri, 1476° / 54°0
76 °
Marysville, Friday, 14 August
Clear. High 76°, low 54°.
Pressure30.06 inHg
Wind10.6 mph NE
Humidity38%
Visibility—
Dew point47°
Sat, 1575° / 58°0
75 °
Marysville, Saturday, 15 August
Overcast. High 75°, low 58°.
Pressure30.27 inHg
Wind9 mph NE
Humidity46%
Visibility—
Dew point51°
Sun, 1680° / 55°0
80 °
Marysville, Sunday, 16 August
Overcast. High 80°, low 55°.
Pressure30.15 inHg
Wind10.7 mph S
Humidity39%
Visibility—
Dew point50°
Mon, 1784° / 62°0
84 °
Marysville, Monday, 17 August
Overcast. High 84°, low 62°.
Pressure30.00 inHg
Wind6.7 mph SW
Humidity39%
Visibility—
Dew point53°
Tue, 1887° / 63°0.03
87 °
Marysville, Tuesday, 18 August
Light rain. High 87°, low 63°.
Pressure29.94 inHg
Wind11.8 mph S
Humidity41%
Visibility—
Dew point58°
Wed, 1974° / 62°0.12
74 °
Marysville, Wednesday, 19 August
Light rain. High 74°, low 62°.
Pressure29.77 inHg
Wind20.3 mph W
Humidity73%
Visibility—
Dew point63°
Thu, 2074° / 57°0
74 °
Marysville, Thursday, 20 August
Overcast. High 74°, low 57°.
Pressure29.85 inHg
Wind17.9 mph NW
Humidity45%
Visibility—
Dew point50°
Fri, 2171° / 52°0
71 °
Marysville, Friday, 21 August
Overcast. High 71°, low 52°.
Pressure30.06 inHg
Wind13.9 mph N
Humidity44%
Visibility—
Dew point46°
Sat, 2279° / 50°0
79 °
Marysville, Saturday, 22 August
Overcast. High 79°, low 50°.
Pressure29.97 inHg
Wind11.1 mph S
Humidity28%
Visibility—
Dew point40°
Sun, 2391° / 63°0
91 °
Marysville, Sunday, 23 August
Clear. High 91°, low 63°.
Pressure29.74 inHg
Wind24.3 mph W
Humidity31%
Visibility—
Dew point53°
Mon, 2481° / 57°0
81 °
Marysville, Monday, 24 August
Partly cloudy. High 81°, low 57°.
Pressure29.97 inHg
Wind11.7 mph NW
Humidity34%
Visibility—
Dew point47°
From day 17 onward the outlook is built from 60-year climate statistics
Tue, 2577° / 63°0.08
77 °
Marysville, Tuesday, 25 August
Climate normal for this date — 60-year average.
Average high77°
Average low63°
Average precipitation0.08 in
Chance of precipitation20%
Record high89° (2021)
Record low52° (1977)
Wed, 2678° / 64°0.09
78 °
Marysville, Wednesday, 26 August
Climate normal for this date — 60-year average.
Average high78°
Average low64°
Average precipitation0.09 in
Chance of precipitation35%
Record high88° (2024)
Record low50° (2025)
Thu, 2778° / 64°0.11
78 °
Marysville, Thursday, 27 August
Climate normal for this date — 60-year average.
Average high78°
Average low64°
Average precipitation0.11 in
Chance of precipitation38%
Record high93° (1973)
Record low50° (2025)
Fri, 2877° / 64°0.17
77 °
Marysville, Friday, 28 August
Climate normal for this date — 60-year average.
Average high77°
Average low64°
Average precipitation0.17 in
Chance of precipitation47%
Record high93° (1973)
Record low49° (1986)
Sat, 2977° / 64°0.13
77 °
Marysville, Saturday, 29 August
Climate normal for this date — 60-year average.
Average high77°
Average low64°
Average precipitation0.13 in
Chance of precipitation32%
Record high91° (1973)
Record low48° (1982)
Sun, 3076° / 63°0.07
76 °
Marysville, Sunday, 30 August
Climate normal for this date — 60-year average.
Average high76°
Average low63°
Average precipitation0.07 in
Chance of precipitation27%
Record high90° (1991)
Record low47° (2025)
Mon, 3176° / 62°0.05
76 °
Marysville, Monday, 31 August
Climate normal for this date — 60-year average.
Average high76°
Average low62°
Average precipitation0.05 in
Chance of precipitation22%
Record high91° (2012)
Record low47° (2025)
Tue, 0176° / 62°0.06
76 °
Marysville, Tuesday, 1 September
Climate normal for this date — 60-year average.
Average high76°
Average low62°
Average precipitation0.06 in
Chance of precipitation23%
Record high88° (1973)
Record low51° (2017)
Wed, 0276° / 62°0.08
76 °
Marysville, Wednesday, 2 September
Climate normal for this date — 60-year average.
Average high76°
Average low62°
Average precipitation0.08 in
Chance of precipitation37%
Record high91° (2011)
Record low49° (2017)
Thu, 0376° / 62°0.1
76 °
Marysville, Thursday, 3 September
Climate normal for this date — 60-year average.
Average high76°
Average low62°
Average precipitation0.1 in
Chance of precipitation28%
Record high89° (1973)
Record low47° (2024)
Fri, 0476° / 62°0.09
76 °
Marysville, Friday, 4 September
Climate normal for this date — 60-year average.
Average high76°
Average low62°
Average precipitation0.09 in
Chance of precipitation30%
Record high90° (2023)
Record low52° (1974)
Sat, 0575° / 61°0.04
75 °
Marysville, Saturday, 5 September
Climate normal for this date — 60-year average.
Average high75°
Average low61°
Average precipitation0.04 in
Chance of precipitation20%
Record high89° (2018)
Record low48° (2025)
Sun, 0675° / 61°0.06
75 °
Marysville, Sunday, 6 September
Climate normal for this date — 60-year average.
Average high75°
Average low61°
Average precipitation0.06 in
Chance of precipitation27%
Record high89° (1998)
Record low48° (1984)
Mon, 0775° / 61°0.11
75 °
Marysville, Monday, 7 September
Climate normal for this date — 60-year average.
Average high75°
Average low61°
Average precipitation0.11 in
Chance of precipitation38%
Record high87° (2002)
Record low45° (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 Marysville, 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 Marysville, 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.