Monthly outlook for Bowmanville, MI: average high 80.1°, average low 59.1°. That is 1.9° above the climate normal for August. Precipitation is expected on 7 days (about 3.1 inches), against a normal of 5 days and 1.7 inches. The warmest day looks like 20 August (89.2°), the coolest 22 August (53.1°).
80.1°/59.1°
Average high / low
+1.9°
Above normal
7 / 5
Wet days / normal
3.1 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
9 August – 18 August
80.1°
77.1°
+1.7°
19 August – 28 August
80°
76.3°
+2°
29 August – 7 September
at normal
74.4°
—
August records over 66 years
97.5°8 August 2001All-time high
43°29 August 1982All-time low
Climate normals and records are computed from the nearest reference point — Skidway Lake (12 mi).
Mon, 1087° / 67°0.05
87 °
Bowmanville, Monday, 10 August
Light rain. High 87°, low 67°.
Pressure29.88 inHg
Wind7.5 mph W
Humidity69%
Visibility6.2 mi
Dew point66°
Tue, 1185° / 60°0.02
85 °
Bowmanville, Tuesday, 11 August
Light rain. High 85°, low 60°.
Pressure29.88 inHg
Wind4.9 mph S
Humidity36%
Visibility6.2 mi
Dew point54°
Wed, 1284° / 58°0
84 °
Bowmanville, Wednesday, 12 August
Overcast. High 84°, low 58°.
Pressure29.85 inHg
Wind5.2 mph N
Humidity55%
Visibility6.2 mi
Dew point58°
Thu, 1382° / 59°0
82 °
Bowmanville, Thursday, 13 August
Overcast. High 82°, low 59°.
Pressure30.00 inHg
Wind5.5 mph SW
Humidity31%
Visibility6.2 mi
Dew point45°
Fri, 1480° / 57°0
80 °
Bowmanville, Friday, 14 August
Light rain. High 80°, low 57°.
Pressure30.09 inHg
Wind10.7 mph E
Humidity27%
Visibility—
Dew point41°
Sat, 1570° / 56°0.08
70 °
Bowmanville, Saturday, 15 August
Light rain. High 70°, low 56°.
Pressure30.09 inHg
Wind11.5 mph NE
Humidity58%
Visibility—
Dew point50°
Sun, 1668° / 60°0.9
68 °
Bowmanville, Sunday, 16 August
Heavy rain. High 68°, low 60°.
Pressure29.88 inHg
Wind12.6 mph N
Humidity76%
Visibility—
Dew point59°
Mon, 1780° / 56°0
80 °
Bowmanville, Monday, 17 August
Overcast. High 80°, low 56°.
Pressure30.06 inHg
Wind6.8 mph S
Humidity44%
Visibility—
Dew point53°
Tue, 1884° / 64°0.52
84 °
Bowmanville, Tuesday, 18 August
Rain. High 84°, low 64°.
Pressure29.74 inHg
Wind13.5 mph W
Humidity93%
Visibility—
Dew point69°
Wed, 1984° / 59°0
84 °
Bowmanville, Wednesday, 19 August
Mostly clear. High 84°, low 59°.
Pressure30.00 inHg
Wind10 mph NW
Humidity42%
Visibility—
Dew point53°
Thu, 2089° / 62°1.25
89 °
Bowmanville, Thursday, 20 August
Heavy rain. High 89°, low 62°.
Pressure29.80 inHg
Wind12.5 mph SW
Humidity42%
Visibility—
Dew point58°
Fri, 2175° / 58°0.17
75 °
Bowmanville, Friday, 21 August
Rain. High 75°, low 58°.
Pressure29.94 inHg
Wind9.3 mph NE
Humidity73%
Visibility—
Dew point59°
Sat, 2277° / 53°0
77 °
Bowmanville, Saturday, 22 August
Mostly clear. High 77°, low 53°.
Pressure30.00 inHg
Wind6.2 mph SE
Humidity46%
Visibility—
Dew point51°
Sun, 2377° / 58°0.04
77 °
Bowmanville, Sunday, 23 August
Light rain. High 77°, low 58°.
Pressure29.91 inHg
Wind12.1 mph W
Humidity73%
Visibility—
Dew point62°
Mon, 2479° / 61°0
79 °
Bowmanville, Monday, 24 August
Overcast. High 79°, low 61°.
Pressure30.00 inHg
Wind9.4 mph NW
Humidity38%
Visibility—
Dew point49°
From day 17 onward the outlook is built from 60-year climate statistics
Tue, 2577° / 61°0.09
77 °
Bowmanville, Tuesday, 25 August
Climate normal for this date — 60-year average.
Average high77°
Average low61°
Average precipitation0.09 in
Chance of precipitation22%
Record high90° (2021)
Record low46° (1977)
Wed, 2677° / 61°0.14
77 °
Bowmanville, Wednesday, 26 August
Climate normal for this date — 60-year average.
Average high77°
Average low61°
Average precipitation0.14 in
Chance of precipitation35%
Record high91° (2024)
Record low49° (2025)
Thu, 2777° / 61°0.13
77 °
Bowmanville, Thursday, 27 August
Climate normal for this date — 60-year average.
Average high77°
Average low61°
Average precipitation0.13 in
Chance of precipitation42%
Record high94° (1973)
Record low48° (2025)
Fri, 2876° / 60°0.09
76 °
Bowmanville, Friday, 28 August
Climate normal for this date — 60-year average.
Average high76°
Average low60°
Average precipitation0.09 in
Chance of precipitation35%
Record high92° (1973)
Record low44° (1986)
Sat, 2976° / 59°0.13
76 °
Bowmanville, Saturday, 29 August
Climate normal for this date — 60-year average.
Average high76°
Average low59°
Average precipitation0.13 in
Chance of precipitation45%
Record high91° (1991)
Record low43° (1982)
Sun, 3075° / 59°0.09
75 °
Bowmanville, Sunday, 30 August
Climate normal for this date — 60-year average.
Average high75°
Average low59°
Average precipitation0.09 in
Chance of precipitation33%
Record high89° (1973)
Record low44° (1976)
Mon, 3175° / 58°0.04
75 °
Bowmanville, Monday, 31 August
Climate normal for this date — 60-year average.
Average high75°
Average low58°
Average precipitation0.04 in
Chance of precipitation20%
Record high88° (2010)
Record low44° (2009)
Tue, 0175° / 58°0.08
75 °
Bowmanville, Tuesday, 1 September
Climate normal for this date — 60-year average.
Average high75°
Average low58°
Average precipitation0.08 in
Chance of precipitation30%
Record high87° (1973)
Record low46° (2009)
Wed, 0274° / 58°0.07
74 °
Bowmanville, Wednesday, 2 September
Climate normal for this date — 60-year average.
Average high74°
Average low58°
Average precipitation0.07 in
Chance of precipitation28%
Record high91° (2011)
Record low46° (1976)
Thu, 0375° / 58°0.13
75 °
Bowmanville, Thursday, 3 September
Climate normal for this date — 60-year average.
Average high75°
Average low58°
Average precipitation0.13 in
Chance of precipitation27%
Record high87° (1973)
Record low46° (1974)
Fri, 0474° / 57°0.08
74 °
Bowmanville, Friday, 4 September
Climate normal for this date — 60-year average.
Average high74°
Average low57°
Average precipitation0.08 in
Chance of precipitation28%
Record high90° (2023)
Record low44° (1974)
Sat, 0574° / 57°0.09
74 °
Bowmanville, Saturday, 5 September
Climate normal for this date — 60-year average.
Average high74°
Average low57°
Average precipitation0.09 in
Chance of precipitation25%
Record high89° (2023)
Record low45° (1984)
Sun, 0674° / 58°0.06
74 °
Bowmanville, Sunday, 6 September
Climate normal for this date — 60-year average.
Average high74°
Average low58°
Average precipitation0.06 in
Chance of precipitation32%
Record high86° (1998)
Record low44° (1988)
Mon, 0773° / 57°0.08
73 °
Bowmanville, Monday, 7 September
Climate normal for this date — 60-year average.
Average high73°
Average low57°
Average precipitation0.08 in
Chance of precipitation38%
Record high89° (1960)
Record low42° (1986)
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 Bowmanville, 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 Bowmanville, 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.