Climate Comfort Score
54/100
Moderate
NOAA 1991–2020 normals 42°F annual avg Public-domain federal data
ST Ignace, MI Climate
Pulled from NOAA NCEI 1991–2020 normals →: average temperature, precipitation, and comfort score
- 42°F
- Avg annual temp
- 54/100
- Comfort score
- 33.4"
- Annual precip
- 150d
- Growing season
30-year climate normals from 1 weather station (1991-2020).
The climate verdict for ST Ignace
ST Ignace, Michigan averages 42°F a year and scores 54/100 on the comfort index - moderate, milder than 27% of U.S. cities.
- 42°F
- annual average temperature (NOAA normal)
- 54/100
- comfort score, milder than 27% of U.S. cities
- 33.4"
- yearly precipitation total
- 150 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
42°F (6°C)
Avg High
51°F
Avg Low
34°F
Annual Precip
33.4"
Comfort Score
54/100
Moderate
Avg Annual Temperature
42°F
30-year mean (NOAA NCEI)
Annual Precipitation
33.4"
Liquid-equivalent total
Comfort score vs national 100-point ceiling (ST Ignace) 54.0%
National median (63)
PlainClimate composite, temperature mildness, humidity, precipitation, extreme-weather frequency. Moderate for the ST Ignace area.
How ST Ignace compares to every U.S. city
ST Ignace's comfort score vs. all U.S. cities
PlainClimate composite comfort index (1–100), NOAA 1991–2020 normals
54 Top 73% higher than 27% 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 ST Ignace
MethodologySince 1900, U.S. land temperatures have tracked (and diverged from) the global mean - the chart below shows how. ST Ignace's current NOAA 1991-2020 normal sits within that longer spread, and the most recent decade runs 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 | Freeze Days | 90°F+ Days |
|---|---|---|---|---|---|---|
| January | 25°F (-4°C) | 11°F (-12°C) | 18°F (-8°C) | 2.1" | 30.7 | 0.0 |
| February | 26°F (-3°C) | 10°F (-12°C) | 18°F (-8°C) | 1.5" | 27.8 | 0.0 |
| March | 35°F (2°C) | 18°F (-8°C) | 27°F (-3°C) | 1.9" | 28.9 | 0.0 |
| April | 47°F (8°C) | 29°F (-1°C) | 38°F (3°C) | 3.0" | 22.6 | 0.0 |
| May | 59°F (15°C) | 40°F (4°C) | 50°F (10°C) | 2.6" | 4.2 | 0.0 |
| June | 70°F (21°C) | 51°F (10°C) | 61°F (16°C) | 3.3" | 0.0 | 0.0 |
| July | 76°F (24°C) | 57°F (14°C) | 66°F (19°C) | 3.0" | 0.0 | 0.0 |
| August | 75°F (24°C) | 56°F (13°C) | 66°F (19°C) | 3.1" | 0.0 | 0.0 |
| September | 68°F (20°C) | 50°F (10°C) | 59°F (15°C) | 3.7" | 0.0 | 0.0 |
| October | 55°F (13°C) | 39°F (4°C) | 47°F (8°C) | 4.3" | 5.2 | 0.0 |
| November | 42°F (5°C) | 30°F (-1°C) | 36°F (2°C) | 2.7" | 17.7 | 0.0 |
| December | 32°F (0°C) | 20°F (-7°C) | 26°F (-3°C) | 2.3" | 28.1 | 0.0 |
Monthly Precipitation
Average monthly rainfall
January 2.1"
February 1.5"
March 1.9"
April 3.0"
May 2.6"
June 3.3"
July 3.0"
August 3.1"
September 3.7"
October 4.3"
November 2.7"
December 2.3"
Frost Dates & Growing Season
First Fall Freeze
October 13
50% probability date
Last Spring Freeze
May 16
50% probability date
Growing Season
150 days
Heating & Cooling Degree Days
Annual totals indicate energy demand for heating and cooling
Heating Degree Days
8,370
Higher = more heating needed
Cooling Degree Days
186
Higher = more cooling needed
Warmest Month
July
Coldest Month
January
What ST Ignace's climate means for you
ST Ignace runs 42°F a year - peaking in July, coldest in January.
- Gardeners get about 150 frost-free days, with the last spring freeze near May 16 - plan the planting calendar around it, not the regional average.
- Energy bills track 8,370 heating and 186 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: ST Ignace, MI
The NOAA 1991–2020 climate normals describe ST Ignace, Michigan as a location with an annual average temperature of 42°F, ranging from a mean daily high of 51°F to a mean daily low of 34°F. July is typically the warmest month of the year, while January is the coldest. These thirty-year averages, computed from station USC00207275, smooth out year-to-year variability and give a baseline expectation for typical conditions in any given month.
Anyone planning to live, garden, or travel in ST Ignace should weigh precipitation alongside temperature: the annual average runs 33.4 inches, predominantly as rainfall. The frost-free season averages 150 days, which directly shapes the planting calendar and growing potential for the area, with the last spring freeze near May 16 and the first fall freeze near October 13. And on the energy front, 8,370 heating degree days and 186 cooling degree days tell the story of how often furnaces and air conditioners run during a normal year.
On PlainClimate's composite comfort index, ST Ignace scores 54/100 (Moderate), a blended measure that weighs temperature mildness, precipitation moderation, and extreme-weather frequency against one another. Use the monthly tables above to plan around specific windows, shoulder seasons for mild highs and lows, peak summer for July-driven heat, or deep winter for January-driven cold. All figures here are thirty-year averages: any single year may run warmer, wetter, drier, or cooler than the normal, so treat them as planning guidance rather than forecasts.
Frequently Asked Questions
What is the average temperature in ST Ignace, MI? ▼
The average annual temperature in ST Ignace, Michigan is 42°F. The warmest month averages 76°F (24°C) and the coldest averages 10°F (-12°C).
How much rain does ST Ignace get? ▼
ST Ignace receives 33.4 inches of precipitation annually. Based on NOAA 30-year climate normals (1991-2020).
What is the comfort score for ST Ignace? ▼
ST Ignace has a climate comfort score of 54/100 (Moderate), milder than 27% of U.S. cities in the PlainClimate database.
When is the growing season in ST Ignace? ▼
ST Ignace has approximately 150 frost-free days per year, with the last spring freeze around May 16 and the first fall freeze around October 13.
How much energy does heating and cooling require in ST Ignace? ▼
ST Ignace has 8,370 heating degree days and 186 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 ST Ignace climate data come from? ▼
NOAA U.S. Climate Normals v1.0.1 (1991-2020), from weather station USC00207275 near ST Ignace.
Data Sources
Data source: NOAA U.S. Climate Normals v1.0.1 (1991-2020). Station: USC00207275. 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.