Port Huron (MI) monthly weather averages

Average daytime temperature

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

Port Huron average temperature chart (Celsius) Port Huron average temperature chart (Fahrenheit)
Average monthly temperatures in Port Huron (degrees centigrade and fahrenheit)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
°C -1.9 -0.9 4.7 11.8 18.4 23.9 26.5 25.8 21.9 15.4 7.7 1.1
°F 28.6 30.3 40.4 53.2 65.1 75 79.7 78.4 71.4 59.7 45.9 33.9

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.

Port Huron monthly rainfall chart (mm) Port Huron monthly rainfall chart (inches)
Average monthly rainfall in Port Huron (mm and inches)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
mm 57 54 63 75 68 82 71 71 76 60 78 75
inches 2.2 2.1 2.5 2.9 2.7 3.2 2.8 2.8 3 2.3 3.1 3
Rainy days 11 10 11 11 10 10 9 9 9 10 11 12

Average annual rainfall in Port Huron: 788.6mm (310.5 inches)

Average daily sunshine

The bar chart below shows the average daily sunshine hours in Port Huron

Port Huron average daily sunshine chart
Average daily sunshine Port Huron
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Hrs sunshine 3.1 4.1 4.7 6.8 8.4 9.5 9.9 8.2 6.6 5.5 3.1 2.3

Day / night temperatures

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

Port Huron average minimum / maximum temperatures (Celsius) Port Huron average minimum / maximum temperatures (Fahrenheit)
Maximum and minimum daily temperatures in Port Huron (degrees centigrade and fahrenheit)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Min °C -8.7 -8.3 -3.1 2.2 7.8 13.3 16.3 15.6 12.1 6.4 1.1 -5
Max °C -1.7 -0.8 4.9 12 18.7 24.2 26.8 26 22.1 15.6 7.9 1.2
Min °F 16.3 17.2 26.5 36 46 55.9 61.3 60.1 53.8 43.5 34 23
Max °F 22.6 23.9 33.6 44.8 55.8 65.7 70.7 69.4 62.8 51.8 40.1 28.6

Sea temperature

The graph below shows the average sea temperature.

Port Huron average sea temperature chart (Celsius) Port Huron average sea temperature chart (Fahrenheit)
Average sea temperature around Port Huron in degrees centigrade and fahrenheit
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
°C 2.4 1.5 1.6 3.8 9 15.8 21.6 23 20.5 15.1 9.6 4.9
°F 36.3 34.7 34.8 38.9 48.1 60.5 70.9 73.5 68.9 59.1 49.2 40.9

Wind speed

The graph below shows the average wind speed.

Port Huron average winspeed by month (km/h) Port Huron average winspeed by month (mph)
Average wind speed in Port Huron (mph and kmh)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
km/h 19 18 18 18 16 14 13 12 13 15 17 18
mph 12 11 11 11 10 9 8 8 8 9 11 11

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.

Port Huron relative humidity averages
Average relative humidity in Port Huron
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
78% 77% 75% 69% 67% 70% 71% 75% 77% 75% 78% 80%