Measurements:
°C
°F
CURRENT WEATHER
09:40
Petoskey
58°F
N 17 mph
Feels like: 54°F
Precip: 36%
World Resorts USA Petoskey Weather

7 Day Weather Forecast

09.15
tue
DAY
64°F
NE 20 mph
precip
40%
NIGHT
60°F
S 9 mph
precip
15%
09.16
wed
DAY
66°F
SW 5 mph
precip
11%
NIGHT
60°F
NW 7 mph
precip
15%
09.17
thu
DAY
68°F
E 6 mph
precip
3%
NIGHT
56°F
SW 6 mph
precip
13%
09.18
fri
DAY
64°F
W 2 mph
precip
11%
NIGHT
52°F
W 7 mph
precip
27%
09.19
sat
DAY
54°F
W 11 mph
precip
79%
NIGHT
58°F
SW 11 mph
precip
32%
09.20
sun
DAY
58°F
W 11 mph
precip
30%
NIGHT
54°F
W 12 mph
precip
26%
09.21
mon
DAY
54°F
W 15 mph
precip
21%
NIGHT
52°F
W 14 mph
precip
21%

Petoskey Sea Water Temperature in September, °F

Select Year: 2026 2025 2024

The average sea surface temperature in September 2026 for Petoskey was 21.3°F. The maximum and minimum values were 20.5°F and 22.1°F respectively.

Petoskey on the Weather Map

Best Time to Visit Petoskey
The most sunny months:
August 14 days
July 14 days
September 13 days
The most warm months:
July 76.7 °F
August 76.6 °F
June 70.5 °F
Warmest sea temperature:
August 73.2 °F
July 70.1 °F
September 68.8 °F
The most cold months:
January 22.1 °F
February 22.6 °F
December 29.7 °F
The most rainy months:
April 3 days
October 3 days
July 2 days
The most windy months:
November 11 mph
December 11 mph
February 10 mph
more details