Ontonagon (MI) monthly weather averages

Average daytime temperature

The bar chart below shows the average monthly peak daytime temperatures at Ontonagon

Ontonagon average temperature chart (Celsius) Ontonagon average temperature chart (Fahrenheit)
Average monthly temperatures in Ontonagon (degrees centigrade and fahrenheit)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
°C -6.7 -4.5 1.6 9.9 17.7 22.3 25.4 23.7 18.2 12.1 3.3 -4.3
°F 20 23.8 34.9 49.8 63.9 72.2 77.8 74.7 64.7 53.8 37.9 24.3

Please note: these are the average peak daytime temperatures (usually around mid-afternoon) so do not show daytime / night highs and lows. To see the daily range of temperatures have a look at the temperature max / min chart below.

Average rainfall & rainy days

The graph below shows the average rainfall and number of rainy days per month.

Ontonagon monthly rainfall chart (mm) Ontonagon monthly rainfall chart (inches)
Average monthly rainfall in Ontonagon (mm and inches)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
mm 60 37 48 53 77 89 81 91 88 67 62 57
inches 2.4 1.5 1.9 2.1 3 3.5 3.2 3.6 3.5 2.6 2.4 2.2
Rainy days 12 10 11 10 11 12 10 12 12 11 11 13

Average annual rainfall in Ontonagon: 766.467mm (301.8 inches)

Average daily sunshine

The bar chart below shows the average daily sunshine hours in Ontonagon

Ontonagon average daily sunshine chart
Average daily sunshine Ontonagon
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Hrs sunshine 4.4 5.6 6.3 8.2 9.4 10 10.8 9.4 6.7 5 3.5 3.5

Day / night temperatures

The graph below shows the daily range of temperatures for each month.

Ontonagon average minimum / maximum temperatures (Celsius) Ontonagon average minimum / maximum temperatures (Fahrenheit)
Maximum and minimum daily temperatures in Ontonagon (degrees centigrade and fahrenheit)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Min °C -16.6 -16 -9.5 -2 4 9 12.7 11.6 7.4 2.3 -4.3 -12.5
Max °C -6.5 -4.3 1.9 10.2 18.1 22.7 25.8 24 18.5 12.4 3.5 -4.1
Min °F 2.2 3.3 14.9 28.5 39.1 48.1 54.8 52.9 45.2 36.1 24.4 9.5
Max °F 11.3 13.8 25.2 39.4 51.8 60.4 66.6 64 55.2 45.1 31.3 17.1

Sea temperature

The graph below shows the average sea temperature.

Ontonagon average sea temperature chart (Celsius) Ontonagon average sea temperature chart (Fahrenheit)
Average sea temperature around Ontonagon in degrees centigrade and fahrenheit
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
°C 2.7 2.2 1.9 2 2.9 4.9 10 15.9 14.1 8.8 5.6 3.7
°F 36.8 35.9 35.5 35.7 37.1 40.8 50.1 60.6 57.5 47.9 42.1 38.7

Wind speed

The graph below shows the average wind speed.

Ontonagon average winspeed by month (km/h) Ontonagon average winspeed by month (mph)
Average wind speed in Ontonagon (mph and kmh)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
km/h 15 14 15 16 15 13 12 12 13 14 15 14
mph 9 9 9 10 9 8 7 7 8 9 9 9

A monthly average windspeed of over 16km/h or 10mph suggests a location is fairly windy.

Relative humidity

The graph below shows the average relative humidity.

Ontonagon relative humidity averages
Average relative humidity in Ontonagon
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
72% 71% 70% 66% 66% 71% 73% 76% 78% 75% 76% 75%