Port Huron and St. Clair have remarkably similar climates.
The year at a glance
Averages from 30 years of climate history, 1991-2020
| Port Huron | Metric | St. Clair |
|---|---|---|
| 168 days | Sunny daysclear or partly cloudy skies | 171 days |
| 33 in | Precipitationper year | 36 in |
| 138 days | Wet daysrain or snow per year | 137 days |
| 36 in | Snowfallper year | 37 in |
| 9 days | Hot daysabove 90 °F | 12 days |
| 117 days | Freezing nightsat or below 32 °F | 131 days |
| 73% | Humidityaverage relative | 72% |
| 50 °F | Average temperatureyear round | 49 °F |
Monthly temperatures
Average daily high and low for each month, in °F. The gap between the two lines is what an ordinary day feels like across the year.
Daily highs
Daily lows
View monthly temperatures as a table
| City | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Port Huron high | 31 | 33 | 42 | 54 | 67 | 76 | 81 | 80 | 73 | 60 | 47 | 36 |
| St. Clair high | 31 | 34 | 43 | 56 | 68 | 78 | 83 | 81 | 74 | 61 | 47 | 36 |
| Port Huron low | 20 | 20 | 28 | 38 | 49 | 59 | 65 | 64 | 57 | 46 | 35 | 26 |
| St. Clair low | 18 | 18 | 26 | 36 | 47 | 57 | 63 | 61 | 54 | 44 | 33 | 25 |
Monthly precipitation
Total rain plus melted snow for each month, in inches. Taller bars mean wetter months.
View monthly precipitation as a table
| City | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Port Huron | 2.3 | 2.0 | 2.2 | 3.3 | 3.3 | 3.4 | 2.8 | 2.8 | 2.9 | 3.0 | 2.6 | 2.2 |
| St. Clair | 2.6 | 2.2 | 2.5 | 3.6 | 3.6 | 3.6 | 3.1 | 2.9 | 2.9 | 3.2 | 3.0 | 2.6 |
Monthly sunny days
Days each month with clear or partly cloudy skies, so compare the same month between cities.
View monthly sunny days as a table
| City | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Port Huron | 8 | 10 | 12 | 13 | 15 | 17 | 21 | 21 | 19 | 15 | 10 | 8 |
| St. Clair | 8 | 10 | 12 | 13 | 15 | 17 | 21 | 21 | 19 | 16 | 11 | 8 |
Keep comparing
Nearby cities and popular picks for each side of this matchup. Any two cities can be compared from the home page.
Port Huron vs another city
- Port Huron vs Marysville, MI
- Port Huron vs Richmond, MI
- Port Huron vs New Haven, MI
- Port Huron vs New Baltimore, MI
- Port Huron vs Mount Clemens, MI
- Port Huron vs New York, NY
- Port Huron vs Los Angeles, CA
- Port Huron vs Chicago, IL
- Port Huron vs Houston, TX
- Port Huron vs Phoenix, AZ
- Port Huron vs Philadelphia, PA
St. Clair vs another city
- St. Clair vs Marysville, MI
- St. Clair vs Richmond, MI
- St. Clair vs New Baltimore, MI
- St. Clair vs New Haven, MI
- St. Clair vs Mount Clemens, MI
- St. Clair vs New York, NY
- St. Clair vs Los Angeles, CA
- St. Clair vs Chicago, IL
- St. Clair vs Houston, TX
- St. Clair vs Phoenix, AZ
- St. Clair vs Philadelphia, PA
About this data
Every figure on this page is a 30 year average computed from daily climate history for 1991-2020, using each city's own coordinates. Wet days count days with measurable precipitation, calibrated against the wet day counts in NOAA's published climate normals. Sunny days count clear plus partly cloudy days, defined as average cloud cover of 63 percent or less and calibrated against NOAA's published sky cover tables. Snowfall figures are model estimates anchored to NOAA station measurements near each city.
Weather data by Open-Meteo.com (CC BY 4.0). Contains modified Copernicus Climate Change Service information (ERA5, ERA5-Land).