Monthly outlook for Gourley, MI: average high 76.6°, average low 56.4°. That is 0.3° above the climate normal for August. Precipitation is expected on 3 days (about 0.5 inches), against a normal of 5 days and 1.7 inches. The warmest day looks like 18 August (87°), the coolest 15 August (48.3°).
76.6°/56.4°
Average high / low
+0.3°
Above normal
3 / 5
Wet days / normal
0.5 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
8 August – 17 August
78.8°
76.5°
+1.3°
18 August – 27 August
72.9°
75.3°
-1.3°
28 August – 6 September
at normal
73.6°
—
August records over 66 years
95°16 August 1988All-time high
40.1°29 August 2025All-time low
Climate normals and records are computed from the nearest reference point — Stephenson (15 mi).
Sun, 0977° / 62°0
77 °
Gourley, Sunday, 9 August
Overcast. High 77°, low 62°.
Pressure29.88 inHg
Wind10 mph S
Humidity41%
Visibility6.2 mi
Dew point54°
Mon, 1085° / 58°0
85 °
Gourley, Monday, 10 August
Clear. High 85°, low 58°.
Pressure29.91 inHg
Wind5.5 mph S
Humidity39%
Visibility6.2 mi
Dew point53°
Tue, 1178° / 59°0.13
78 °
Gourley, Tuesday, 11 August
Rain. High 78°, low 59°.
Pressure29.85 inHg
Wind3.6 mph NE
Humidity88%
Visibility6.2 mi
Dew point63°
Wed, 1276° / 54°0.03
76 °
Gourley, Wednesday, 12 August
Light rain. High 76°, low 54°.
Pressure29.83 inHg
Wind12.1 mph N
Humidity35%
Visibility6.2 mi
Dew point48°
Thu, 1375° / 49°0
75 °
Gourley, Thursday, 13 August
Partly cloudy. High 75°, low 49°.
Pressure29.97 inHg
Wind8.9 mph NE
Humidity31%
Visibility—
Dew point39°
Fri, 1478° / 52°0
78 °
Gourley, Friday, 14 August
Clear. High 78°, low 52°.
Pressure30.09 inHg
Wind8.9 mph N
Humidity30%
Visibility—
Dew point41°
Sat, 1575° / 48°0
75 °
Gourley, Saturday, 15 August
Overcast. High 75°, low 48°.
Pressure30.27 inHg
Wind5.9 mph SE
Humidity36%
Visibility—
Dew point43°
Sun, 1682° / 57°0
82 °
Gourley, Sunday, 16 August
Partly cloudy. High 82°, low 57°.
Pressure30.06 inHg
Wind8.5 mph SW
Humidity40%
Visibility—
Dew point52°
Mon, 1784° / 62°0
84 °
Gourley, Monday, 17 August
Overcast. High 84°, low 62°.
Pressure29.94 inHg
Wind7.9 mph SE
Humidity41%
Visibility—
Dew point55°
Tue, 1887° / 61°0.1
87 °
Gourley, Tuesday, 18 August
Light rain. High 87°, low 61°.
Pressure29.83 inHg
Wind10.8 mph W
Humidity64%
Visibility—
Dew point64°
Wed, 1963° / 60°0
63 °
Gourley, Wednesday, 19 August
Overcast. High 63°, low 60°.
Pressure29.83 inHg
Wind13.1 mph N
Humidity79%
Visibility—
Dew point55°
Thu, 2075° / 54°0
75 °
Gourley, Thursday, 20 August
Partly cloudy. High 75°, low 54°.
Pressure30.03 inHg
Wind11.9 mph N
Humidity31%
Visibility—
Dew point39°
Fri, 2173° / 50°0
73 °
Gourley, Friday, 21 August
Overcast. High 73°, low 50°.
Pressure30.12 inHg
Wind8.2 mph SE
Humidity35%
Visibility—
Dew point41°
Sat, 2266° / 54°0.16
66 °
Gourley, Saturday, 22 August
Light rain. High 66°, low 54°.
Pressure29.88 inHg
Wind10.8 mph S
Humidity78%
Visibility—
Dew point56°
Sun, 2373° / 58°0.02
73 °
Gourley, Sunday, 23 August
Light rain. High 73°, low 58°.
Pressure29.77 inHg
Wind14 mph W
Humidity54%
Visibility—
Dew point53°
From day 17 onward the outlook is built from 60-year climate statistics
Mon, 2475° / 62°0.1
75 °
Gourley, Monday, 24 August
Climate normal for this date — 60-year average.
Average high75°
Average low62°
Average precipitation0.1 in
Chance of precipitation30%
Record high88° (1969)
Record low46° (2017)
Tue, 2576° / 62°0.13
76 °
Gourley, Tuesday, 25 August
Climate normal for this date — 60-year average.
Average high76°
Average low62°
Average precipitation0.13 in
Chance of precipitation28%
Record high91° (2013)
Record low43° (2017)
Wed, 2676° / 62°0.15
76 °
Gourley, Wednesday, 26 August
Climate normal for this date — 60-year average.
Average high76°
Average low62°
Average precipitation0.15 in
Chance of precipitation45%
Record high92° (2020)
Record low44° (2017)
Thu, 2776° / 62°0.17
76 °
Gourley, Thursday, 27 August
Climate normal for this date — 60-year average.
Average high76°
Average low62°
Average precipitation0.17 in
Chance of precipitation43%
Record high91° (1976)
Record low43° (2025)
Fri, 2874° / 62°0.09
74 °
Gourley, Friday, 28 August
Climate normal for this date — 60-year average.
Average high74°
Average low62°
Average precipitation0.09 in
Chance of precipitation30%
Record high88° (1973)
Record low46° (1986)
Sat, 2975° / 61°0.09
75 °
Gourley, Saturday, 29 August
Climate normal for this date — 60-year average.
Average high75°
Average low61°
Average precipitation0.09 in
Chance of precipitation35%
Record high88° (1973)
Record low40° (2025)
Sun, 3074° / 60°0.15
74 °
Gourley, Sunday, 30 August
Climate normal for this date — 60-year average.
Average high74°
Average low60°
Average precipitation0.15 in
Chance of precipitation37%
Record high91° (1991)
Record low46° (2023)
Mon, 3174° / 60°0.07
74 °
Gourley, Monday, 31 August
Climate normal for this date — 60-year average.
Average high74°
Average low60°
Average precipitation0.07 in
Chance of precipitation23%
Record high86° (1960)
Record low47° (2019)
Tue, 0174° / 60°0.1
74 °
Gourley, Tuesday, 1 September
Climate normal for this date — 60-year average.
Average high74°
Average low60°
Average precipitation0.1 in
Chance of precipitation32%
Record high86° (2022)
Record low46° (2017)
Wed, 0274° / 60°0.1
74 °
Gourley, Wednesday, 2 September
Climate normal for this date — 60-year average.
Average high74°
Average low60°
Average precipitation0.1 in
Chance of precipitation37%
Record high87° (2011)
Record low46° (2021)
Thu, 0374° / 60°0.13
74 °
Gourley, Thursday, 3 September
Climate normal for this date — 60-year average.
Average high74°
Average low60°
Average precipitation0.13 in
Chance of precipitation33%
Record high93° (2023)
Record low45° (1974)
Fri, 0473° / 60°0.07
73 °
Gourley, Friday, 4 September
Climate normal for this date — 60-year average.
Average high73°
Average low60°
Average precipitation0.07 in
Chance of precipitation27%
Record high94° (2023)
Record low41° (2025)
Sat, 0572° / 59°0.11
72 °
Gourley, Saturday, 5 September
Climate normal for this date — 60-year average.
Average high72°
Average low59°
Average precipitation0.11 in
Chance of precipitation37%
Record high87° (2007)
Record low44° (2025)
Sun, 0673° / 59°0.08
73 °
Gourley, Sunday, 6 September
Climate normal for this date — 60-year average.
Average high73°
Average low59°
Average precipitation0.08 in
Chance of precipitation33%
Record high86° (1960)
Record low46° (2017)
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 Gourley, 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 Gourley, 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.