Monthly outlook for Sand Lake, MI: average high 77.4°, average low 56.2°. That is 0.7° above the climate normal for August. Precipitation is expected on 4 days (about 2.0 inches), against a normal of 5 days and 1.6 inches. The warmest day looks like 12 August (86.1°), the coolest 14 August (49.5°).
77.4°/56.2°
Average high / low
+0.7°
Above normal
4 / 5
Wet days / normal
2.0 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
9 August – 18 August
78.7°
76.5°
+1.2°
19 August – 28 August
75.2°
75.7°
-0.3°
29 August – 7 September
at normal
73.8°
—
August records over 66 years
96.8°8 August 2001All-time high
45.5°27 August 2025All-time low
Climate normals and records are computed from the nearest reference point — Whittemore (9 mi).
Mon, 1085° / 63°0.35
85 °
Sand Lake, Monday, 10 August
Heavy rain. High 85°, low 63°.
Pressure29.88 inHg
Wind8.1 mph W
Humidity77%
Visibility6.2 mi
Dew point66°
Tue, 1183° / 58°0
83 °
Sand Lake, Tuesday, 11 August
Partly cloudy. High 83°, low 58°.
Pressure29.94 inHg
Wind4.5 mph S
Humidity38%
Visibility6.2 mi
Dew point52°
Wed, 1286° / 59°0.01
86 °
Sand Lake, Wednesday, 12 August
Light rain. High 86°, low 59°.
Pressure29.74 inHg
Wind6.6 mph NW
Humidity45%
Visibility6.2 mi
Dew point58°
Thu, 1376° / 55°0
76 °
Sand Lake, Thursday, 13 August
Partly cloudy. High 76°, low 55°.
Pressure29.97 inHg
Wind9.2 mph NW
Humidity31%
Visibility—
Dew point40°
Fri, 1475° / 50°0
75 °
Sand Lake, Friday, 14 August
Clear. High 75°, low 50°.
Pressure30.15 inHg
Wind6.6 mph N
Humidity31%
Visibility—
Dew point40°
Sat, 1575° / 52°0
75 °
Sand Lake, Saturday, 15 August
Overcast. High 75°, low 52°.
Pressure30.30 inHg
Wind9.8 mph SE
Humidity42%
Visibility—
Dew point48°
Sun, 1667° / 54°0.56
67 °
Sand Lake, Sunday, 16 August
Rain. High 67°, low 54°.
Pressure30.06 inHg
Wind7.5 mph SE
Humidity71%
Visibility—
Dew point54°
Mon, 1778° / 59°0
78 °
Sand Lake, Monday, 17 August
Partly cloudy. High 78°, low 59°.
Pressure30.00 inHg
Wind6.5 mph NW
Humidity40%
Visibility—
Dew point49°
Tue, 1877° / 57°0
77 °
Sand Lake, Tuesday, 18 August
Overcast. High 77°, low 57°.
Pressure29.88 inHg
Wind8.1 mph S
Humidity46%
Visibility—
Dew point52°
Wed, 1977° / 62°0.31
77 °
Sand Lake, Wednesday, 19 August
Light rain. High 77°, low 62°.
Pressure29.62 inHg
Wind14.9 mph NW
Humidity56%
Visibility—
Dew point58°
Thu, 2073° / 51°0
73 °
Sand Lake, Thursday, 20 August
Overcast. High 73°, low 51°.
Pressure29.91 inHg
Wind10.1 mph SE
Humidity31%
Visibility—
Dew point38°
Fri, 2176° / 52°0.02
76 °
Sand Lake, Friday, 21 August
Light rain. High 76°, low 52°.
Pressure29.80 inHg
Wind7.7 mph SW
Humidity35%
Visibility—
Dew point44°
Sat, 2272° / 61°0.74
72 °
Sand Lake, Saturday, 22 August
Rain. High 72°, low 61°.
Pressure29.65 inHg
Wind14.1 mph NW
Humidity81%
Visibility—
Dew point65°
Sun, 2374° / 55°0
74 °
Sand Lake, Sunday, 23 August
Mostly clear. High 74°, low 55°.
Pressure30.03 inHg
Wind12.9 mph N
Humidity33%
Visibility—
Dew point40°
Mon, 2479° / 52°0
79 °
Sand Lake, Monday, 24 August
Partly cloudy. High 79°, low 52°.
Pressure30.18 inHg
Wind7.5 mph W
Humidity35%
Visibility—
Dew point44°
From day 17 onward the outlook is built from 60-year climate statistics
Tue, 2576° / 62°0.09
76 °
Sand Lake, Tuesday, 25 August
Climate normal for this date — 60-year average.
Average high76°
Average low62°
Average precipitation0.09 in
Chance of precipitation23%
Record high91° (2021)
Record low47° (2017)
Wed, 2676° / 62°0.13
76 °
Sand Lake, Wednesday, 26 August
Climate normal for this date — 60-year average.
Average high76°
Average low62°
Average precipitation0.13 in
Chance of precipitation35%
Record high90° (2024)
Record low48° (2025)
Thu, 2776° / 62°0.13
76 °
Sand Lake, Thursday, 27 August
Climate normal for this date — 60-year average.
Average high76°
Average low62°
Average precipitation0.13 in
Chance of precipitation42%
Record high92° (1973)
Record low46° (2025)
Fri, 2875° / 62°0.09
75 °
Sand Lake, Friday, 28 August
Climate normal for this date — 60-year average.
Average high75°
Average low62°
Average precipitation0.09 in
Chance of precipitation40%
Record high92° (1973)
Record low46° (1986)
Sat, 2975° / 61°0.12
75 °
Sand Lake, Saturday, 29 August
Climate normal for this date — 60-year average.
Average high75°
Average low61°
Average precipitation0.12 in
Chance of precipitation42%
Record high90° (1991)
Record low46° (1982)
Sun, 3075° / 60°0.08
75 °
Sand Lake, Sunday, 30 August
Climate normal for this date — 60-year average.
Average high75°
Average low60°
Average precipitation0.08 in
Chance of precipitation32%
Record high89° (1973)
Record low46° (2025)
Mon, 3174° / 60°0.04
74 °
Sand Lake, Monday, 31 August
Climate normal for this date — 60-year average.
Average high74°
Average low60°
Average precipitation0.04 in
Chance of precipitation23%
Record high88° (2010)
Record low47° (2009)
Tue, 0174° / 59°0.07
74 °
Sand Lake, Tuesday, 1 September
Climate normal for this date — 60-year average.
Average high74°
Average low59°
Average precipitation0.07 in
Chance of precipitation28%
Record high86° (1973)
Record low47° (2017)
Wed, 0274° / 60°0.07
74 °
Sand Lake, Wednesday, 2 September
Climate normal for this date — 60-year average.
Average high74°
Average low60°
Average precipitation0.07 in
Chance of precipitation28%
Record high89° (2011)
Record low45° (2017)
Thu, 0374° / 60°0.12
74 °
Sand Lake, Thursday, 3 September
Climate normal for this date — 60-year average.
Average high74°
Average low60°
Average precipitation0.12 in
Chance of precipitation30%
Record high87° (1973)
Record low48° (1974)
Fri, 0473° / 59°0.08
73 °
Sand Lake, Friday, 4 September
Climate normal for this date — 60-year average.
Average high73°
Average low59°
Average precipitation0.08 in
Chance of precipitation28%
Record high91° (2023)
Record low44° (2025)
Sat, 0573° / 59°0.09
73 °
Sand Lake, Saturday, 5 September
Climate normal for this date — 60-year average.
Average high73°
Average low59°
Average precipitation0.09 in
Chance of precipitation23%
Record high90° (2023)
Record low47° (1984)
Sun, 0674° / 59°0.06
74 °
Sand Lake, Sunday, 6 September
Climate normal for this date — 60-year average.
Average high74°
Average low59°
Average precipitation0.06 in
Chance of precipitation37%
Record high86° (1998)
Record low46° (2020)
Mon, 0772° / 58°0.08
72 °
Sand Lake, Monday, 7 September
Climate normal for this date — 60-year average.
Average high72°
Average low58°
Average precipitation0.08 in
Chance of precipitation37%
Record high87° (1960)
Record low43° (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 Sand Lake, 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 Sand Lake, 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.