Monthly outlook for Ottawa, MI: average high 66.9°, average low 49.7°. That is 3° above the climate normal for October. Precipitation is expected on 3 days (about 1.9 inches), against a normal of 5 days and 1.4 inches. The warmest day looks like 15 October (80.9°), the coolest 18 October (37.8°).
66.9°/49.7°
Average high / low
+3°
Above normal
3 / 5
Wet days / normal
1.9 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
8 October – 17 October
69.8°
63°
+3.8°
18 October – 27 October
62.1°
58.4°
+2.1°
28 October – 6 November
at normal
55.1°
—
October records over 66 years
87.6°4 October 2025All-time high
24.3°31 October 1988All-time low
Climate normals and records are computed from the nearest reference point — Toledo (8 mi).
Fri, 0974° / 45°0
74 °
Ottawa, Friday, 9 October
Clear. High 74°, low 45°.
Pressure30.24 inHg
Wind4.6 mph SW
Humidity40%
Visibility6.2 mi
Dew point42°
Sat, 1079° / 53°0
79 °
Ottawa, Saturday, 10 October
Overcast. High 79°, low 53°.
Pressure30.24 inHg
Wind6.6 mph SE
Humidity44%
Visibility6.2 mi
Dew point48°
Sun, 1165° / 57°0.47
65 °
Ottawa, Sunday, 11 October
Rain. High 65°, low 57°.
Pressure30.03 inHg
Wind7.9 mph E
Humidity94%
Visibility3.2 mi
Dew point58°
Mon, 1277° / 55°0
77 °
Ottawa, Monday, 12 October
Clear. High 77°, low 55°.
Pressure29.91 inHg
Wind6.4 mph SW
Humidity76%
Visibility6.2 mi
Dew point59°
Tue, 1368° / 53°0.03
68 °
Ottawa, Tuesday, 13 October
Light rain. High 68°, low 53°.
Pressure29.94 inHg
Wind10.4 mph N
Humidity67%
Visibility—
Dew point53°
Wed, 1458° / 45°0
58 °
Ottawa, Wednesday, 14 October
Partly cloudy. High 58°, low 45°.
Pressure30.15 inHg
Wind11.9 mph E
Humidity68%
Visibility—
Dew point45°
Thu, 1581° / 60°1.17
81 °
Ottawa, Thursday, 15 October
Heavy rain. High 81°, low 60°.
Pressure29.97 inHg
Wind13 mph SW
Humidity70%
Visibility—
Dew point67°
Fri, 1671° / 53°0.2
71 °
Ottawa, Friday, 16 October
Rain. High 71°, low 53°.
Pressure30.09 inHg
Wind15.3 mph NW
Humidity62%
Visibility—
Dew point57°
Sat, 1754° / 44°0
54 °
Ottawa, Saturday, 17 October
Overcast. High 54°, low 44°.
Pressure30.36 inHg
Wind14.9 mph NW
Humidity41%
Visibility—
Dew point29°
Sun, 1852° / 38°0
52 °
Ottawa, Sunday, 18 October
Clear. High 52°, low 38°.
Pressure30.56 inHg
Wind9.1 mph N
Humidity39%
Visibility—
Dew point25°
Mon, 1958° / 41°0
58 °
Ottawa, Monday, 19 October
Clear. High 58°, low 41°.
Pressure30.50 inHg
Wind7.2 mph S
Humidity31%
Visibility—
Dew point24°
Tue, 2062° / 45°0
62 °
Ottawa, Tuesday, 20 October
Overcast. High 62°, low 45°.
Pressure30.36 inHg
Wind6.7 mph S
Humidity32%
Visibility—
Dew point29°
Wed, 2167° / 50°0.01
67 °
Ottawa, Wednesday, 21 October
Light rain. High 67°, low 50°.
Pressure30.15 inHg
Wind12 mph SW
Humidity41%
Visibility—
Dew point39°
Thu, 2266° / 55°0
66 °
Ottawa, Thursday, 22 October
Light rain. High 66°, low 55°.
Pressure30.09 inHg
Wind11.7 mph W
Humidity48%
Visibility—
Dew point45°
Fri, 2367° / 51°0
67 °
Ottawa, Friday, 23 October
Clear. High 67°, low 51°.
Pressure30.18 inHg
Wind7.6 mph NW
Humidity53%
Visibility—
Dew point46°
From day 17 onward the outlook is built from 60-year climate statistics
Sat, 2458° / 45°0.07
58 °
Ottawa, Saturday, 24 October
Climate normal for this date — 60-year average.
Average high58°
Average low45°
Average precipitation0.07 in
Chance of precipitation27%
Record high81° (1963)
Record low27° (1981)
Sun, 2558° / 44°0.07
58 °
Ottawa, Sunday, 25 October
Climate normal for this date — 60-year average.
Average high58°
Average low44°
Average precipitation0.07 in
Chance of precipitation28%
Record high80° (1963)
Record low28° (2018)
Mon, 2657° / 43°0.06
57 °
Ottawa, Monday, 26 October
Climate normal for this date — 60-year average.
Average high57°
Average low43°
Average precipitation0.06 in
Chance of precipitation30%
Record high80° (1963)
Record low27° (1962)
Tue, 2757° / 43°0.09
57 °
Ottawa, Tuesday, 27 October
Climate normal for this date — 60-year average.
Average high57°
Average low43°
Average precipitation0.09 in
Chance of precipitation37%
Record high76° (2023)
Record low26° (1962)
Wed, 2856° / 42°0.07
56 °
Ottawa, Wednesday, 28 October
Climate normal for this date — 60-year average.
Average high56°
Average low42°
Average precipitation0.07 in
Chance of precipitation28%
Record high71° (1999)
Record low26° (1976)
Thu, 2955° / 42°0.06
55 °
Ottawa, Thursday, 29 October
Climate normal for this date — 60-year average.
Average high55°
Average low42°
Average precipitation0.06 in
Chance of precipitation23%
Record high77° (2024)
Record low26° (1965)
Fri, 3056° / 42°0.07
56 °
Ottawa, Friday, 30 October
Climate normal for this date — 60-year average.
Average high56°
Average low42°
Average precipitation0.07 in
Chance of precipitation30%
Record high77° (2024)
Record low27° (1988)
Sat, 3157° / 44°0.09
57 °
Ottawa, Saturday, 31 October
Climate normal for this date — 60-year average.
Average high57°
Average low44°
Average precipitation0.09 in
Chance of precipitation33%
Record high76° (2024)
Record low24° (1988)
Sun, 0156° / 44°0.13
56 °
Ottawa, Sunday, 1 November
Climate normal for this date — 60-year average.
Average high56°
Average low44°
Average precipitation0.13 in
Chance of precipitation40%
Record high76° (2016)
Record low26° (2023)
Mon, 0256° / 41°0.17
56 °
Ottawa, Monday, 2 November
Climate normal for this date — 60-year average.
Average high56°
Average low41°
Average precipitation0.17 in
Chance of precipitation40%
Record high75° (2016)
Record low28° (2014)
Tue, 0354° / 40°0.07
54 °
Ottawa, Tuesday, 3 November
Climate normal for this date — 60-year average.
Average high54°
Average low40°
Average precipitation0.07 in
Chance of precipitation25%
Record high74° (1987)
Record low23° (1991)
Wed, 0454° / 40°0.06
54 °
Ottawa, Wednesday, 4 November
Climate normal for this date — 60-year average.
Average high54°
Average low40°
Average precipitation0.06 in
Chance of precipitation28%
Record high74° (2003)
Record low19° (1966)
Thu, 0554° / 41°0.09
54 °
Ottawa, Thursday, 5 November
Climate normal for this date — 60-year average.
Average high54°
Average low41°
Average precipitation0.09 in
Chance of precipitation25%
Record high76° (2024)
Record low20° (1991)
Fri, 0653° / 39°0.05
53 °
Ottawa, Friday, 6 November
Climate normal for this date — 60-year average.
Average high53°
Average low39°
Average precipitation0.05 in
Chance of precipitation28%
Record high74° (1975)
Record low24° (1967)
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 Ottawa, 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 Ottawa, 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.