Climate Comfort Score
63/100
Good
NOAA 1991–2020 normals 50°F annual avg Public-domain federal data
Port Huron, MI Climate
Temperature, precipitation, and comfort score from NOAA NCEI 1991–2020 normals →
- 50°F
- Avg annual temp
- 63/100
- Comfort score
- 34.9"
- Annual precip
- 198d
- Growing season
30-year climate normals from 1 weather station (1991-2020).
The climate verdict for Port Huron
Port Huron, Michigan averages 50°F a year and scores 63/100 on the comfort index - good, milder than 47% of U.S. cities.
- 50°F
- annual average temperature (NOAA normal)
- 63/100
- comfort score, milder than 47% of U.S. cities
- 34.9"
- annual precipitation · 36" snow
- 198 days
- growing season, frost-free days
Based on NOAA U.S. Climate Normals (1991–2020) - 30-year averages describing the typical year, not a forecast.
Avg Temperature
50°F (10°C)
Avg High
57°F
Avg Low
42°F
Annual Precip
34.9"
Annual Snow
35.5"
Comfort Score
63/100
Good
Avg Annual Temperature
50°F
30-year mean (NOAA NCEI)
Annual Precipitation
34.9"
Plus 35.5" of snow
Comfort score vs national 100-point ceiling (Port Huron) 63.0%
National median (63)
PlainClimate composite, temperature mildness, humidity, precipitation, extreme-weather frequency. Good for the Port Huron area.
How Port Huron compares to every U.S. city
Port Huron's comfort score vs. all U.S. cities
PlainClimate composite comfort index (1–100), NOAA 1991–2020 normals
63 Top 53% higher than 47% of 6,915 US cities
Each bar is a band; taller bars hold more US cities. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count, share, and where it sits relative to this entry.
Source NOAA U.S. Climate Normals, PlainClimate comfort index · 1991–2020
Warming context for Port Huron
MethodologyHow the U.S. land temperature anomaly tracks against the global mean since 1900. The current NOAA 1991-2020 normal for Port Huron captures average conditions across the spread shown, the most recent decade is warmer than the 30-year mean.
- United States land mean (NOAA NCEI) +0.11 °C/decade
- Global anomaly (NASA GISTEMP) +0.11 °C/decade
- Paris Agreement thresholds 1.5°C / 2.0°C
Monthly Temperatures
Average daily high and low temperatures by month
| Month | Avg High | Avg Low | Mean | Precip | Snow | Freeze Days | 90°F+ Days |
|---|---|---|---|---|---|---|---|
| January | 31°F (-1°C) | 20°F (-7°C) | 25°F (-4°C) | 2.5" | 11.1" | 27.8 | 0.0 |
| February | 33°F (1°C) | 21°F (-6°C) | 27°F (-3°C) | 2.1" | 11.4" | 25.8 | 0.0 |
| March | 42°F (6°C) | 28°F (-2°C) | 35°F (2°C) | 2.2" | 4.6" | 22.9 | 0.0 |
| April | 54°F (12°C) | 38°F (3°C) | 46°F (8°C) | 3.1" | 0.4" | 7.6 | 0.0 |
| May | 67°F (19°C) | 49°F (9°C) | 58°F (14°C) | 3.5" | 0.0" | 0.3 | 0.4 |
| June | 76°F (25°C) | 59°F (15°C) | 68°F (20°C) | 3.6" | 0.0" | 0.0 | 2.6 |
| July | 81°F (27°C) | 65°F (18°C) | 73°F (23°C) | 3.3" | 0.0" | 0.0 | 4.0 |
| August | 80°F (27°C) | 64°F (18°C) | 72°F (22°C) | 3.1" | 0.0" | 0.0 | 2.0 |
| September | 73°F (23°C) | 57°F (14°C) | 65°F (18°C) | 3.3" | 0.0" | 0.0 | 1.0 |
| October | 61°F (16°C) | 46°F (8°C) | 53°F (12°C) | 3.1" | 0.0" | 1.2 | 0.0 |
| November | 47°F (8°C) | 35°F (2°C) | 41°F (5°C) | 2.8" | 1.3" | 12.7 | 0.0 |
| December | 36°F (2°C) | 26°F (-3°C) | 31°F (0°C) | 2.2" | 6.7" | 24.1 | 0.0 |
Monthly Precipitation
Average monthly rainfall and snowfall
January 2.5"
Snow: 11.1"
14.0 days with precipitation
February 2.1"
Snow: 11.4"
10.3 days with precipitation
March 2.2"
Snow: 4.6"
10.8 days with precipitation
April 3.1"
Snow: 0.4"
12.9 days with precipitation
May 3.5"
13.0 days with precipitation
June 3.6"
10.9 days with precipitation
July 3.3"
10.1 days with precipitation
August 3.1"
10.3 days with precipitation
September 3.3"
10.1 days with precipitation
October 3.1"
12.6 days with precipitation
November 2.8"
Snow: 1.3"
11.8 days with precipitation
December 2.2"
Snow: 6.7"
12.7 days with precipitation
Frost Dates & Growing Season
First Fall Freeze
November 3
50% probability date
Last Spring Freeze
April 19
50% probability date
Growing Season
198 days
Heating & Cooling Degree Days
Annual totals indicate energy demand for heating and cooling
Heating Degree Days
6,343
Higher = more heating needed
Cooling Degree Days
749
Higher = more cooling needed
Warmest Month
July
Coldest Month
January
What Port Huron's climate means for you
Port Huron runs 50°F a year - peaking in July, coldest in January.
- Gardeners get about 198 frost-free days, with the last spring freeze near April 19 - plan the planting calendar around it, not the regional average.
- Energy bills track 6,343 heating and 749 cooling degree days a year, higher means the furnace or AC runs more.
- Comparing places to live? Line this city up against nearby cities and the national rankings. See rankings
These are 30-year NOAA normals (1991–2020) - the typical year, not a forecast for any specific season.
Climate Guides
Climate Insight: Port Huron, MI
Port Huron, Michigan runs an annual average of 50°F, ranging from a mean daily high of 57°F to a mean daily low of 42°F, per NOAA's 1991–2020 climate normals. July is typically the warmest month of the year, while January is the coldest. Drawn from station USC00206680, these thirty-year averages smooth out year-to-year swings into a baseline for what a typical month looks like here.
Port Huron averages 34.9 inches of precipitation a year, with 35.5 inches typically falling as snow, and that matters as much to daily life here as temperature does. The frost-free season averages 198 days, which directly shapes the planting calendar and growing potential for the area, with the last spring freeze near April 19 and the first fall freeze near November 3. As for energy demand, 6,343 heating degree days and 749 cooling degree days tell the story of how often furnaces and air conditioners run during a normal year.
On PlainClimate's composite comfort index, Port Huron scores 63/100 (Good), a blended measure that weighs temperature mildness, precipitation moderation, and extreme-weather frequency against one another. The monthly tables above turn that into a planning tool: expect the mildest highs and lows in the shoulder seasons, July-driven heat at the peak of summer, and January-driven cold at the depth of winter. Every number here is a thirty-year average, not a forecast, so any given year can and does run warmer, cooler, wetter, or drier than the normal.
Frequently Asked Questions
What is the average temperature in Port Huron, MI? ▼
The average annual temperature in Port Huron, Michigan is 50°F. The warmest month averages 81°F (27°C) and the coldest averages 20°F (-7°C).
How much rain does Port Huron get? ▼
Port Huron receives 34.9 inches of precipitation annually, including 35.5 inches of snow. Based on NOAA 30-year climate normals (1991-2020).
What is the comfort score for Port Huron? ▼
Port Huron has a climate comfort score of 63/100 (Good), milder than 47% of U.S. cities in the PlainClimate database.
When is the growing season in Port Huron? ▼
Port Huron has approximately 198 frost-free days per year, with the last spring freeze around April 19 and the first fall freeze around November 3.
How much energy does heating and cooling require in Port Huron? ▼
Port Huron has 6,343 heating degree days and 749 cooling degree days annually, a heating-dominated climate. See our <a href="/guides/reading-weather-data/" class="underline hover:text-brand-600">guide to reading weather data</a> for what these figures mean.
Where does this Port Huron climate data come from? ▼
NOAA U.S. Climate Normals v1.0.1 (1991-2020), from weather station USC00206680 near Port Huron.
Data Sources
Data source: NOAA U.S. Climate Normals v1.0.1 (1991-2020). Station: USC00206680. For informational purposes only.
Read our methodology - how this data is sourced, computed, and verified.
Related
Data sourced from official public datasets. See our methodology for details. Retrieved and formatted by PlainClimate Editorial
Every figure on PlainClimate is rendered directly from NOAA 1991-2020 U.S. Climate Normals data, no number is typed in by an editor. This page draws directly on NOAA 1991-2020 U.S. Climate Normals data, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.