Climate Comfort Score
39/100
Below Average
NOAA 1991–2020 normals 43°F annual avg Public-domain federal data
Grand Marais, MI Climate
Average temperature, precipitation, and a comfort score, drawn from NOAA NCEI 1991–2020 normals →
- 43°F
- Avg annual temp
- 39/100
- Comfort score
- 136d
- Growing season
30-year climate normals from 1 weather station (1991-2020).
The climate verdict for Grand Marais
Grand Marais, Michigan averages 43°F a year and scores 39/100 on the comfort index - below average, milder than 4% of U.S. cities.
- 43°F
- average temperature, NOAA 1991-2020 normal
- 39/100
- comfort score, milder than 4% of U.S. cities
- 136 days
- frost-free days per growing season
Based on NOAA U.S. Climate Normals (1991–2020) - 30-year averages describing the typical year, not a forecast.
Avg Temperature
43°F (6°C)
Avg High
51°F
Avg Low
34°F
Annual Precip
N/A
Comfort Score
39/100
Below Average
Avg Annual Temperature
43°F
30-year mean (NOAA NCEI)
Annual Precipitation
N/A
Liquid-equivalent total
Comfort score vs national 100-point ceiling (Grand Marais) 39.0%
National median (63)
PlainClimate composite, temperature mildness, humidity, precipitation, extreme-weather frequency. Below Average for the Grand Marais area.
How Grand Marais compares to every U.S. city
Grand Marais's comfort score vs. all U.S. cities
PlainClimate composite comfort index (1–100), NOAA 1991–2020 normals
39 Top 96% higher than 4% 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 Grand Marais
MethodologyZooming out from Grand Marais's own normal, the chart below shows how the U.S. land temperature anomaly has tracked the global mean since 1900 - the most recent decade sits warmer than the 30-year mean shown here.
- 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 | 24°F (-4°C) | 14°F (-10°C) | 19°F (-7°C) | N/A | 31.0 | 0.0 |
| February | 27°F (-3°C) | 13°F (-10°C) | 20°F (-7°C) | N/A | 27.9 | 0.0 |
| March | 37°F (3°C) | 20°F (-7°C) | 28°F (-2°C) | N/A | 29.3 | 0.0 |
| April | 48°F (9°C) | 28°F (-2°C) | 38°F (3°C) | N/A | 24.0 | 0.0 |
| May | 61°F (16°C) | 40°F (4°C) | 50°F (10°C) | N/A | 10.2 | 0.2 |
| June | 70°F (21°C) | 48°F (9°C) | 59°F (15°C) | N/A | 2.0 | 1.7 |
| July | 75°F (24°C) | 55°F (13°C) | 65°F (18°C) | N/A | 0.1 | 1.5 |
| August | 75°F (24°C) | 56°F (13°C) | 65°F (19°C) | N/A | 0.1 | 0.8 |
| September | 68°F (20°C) | 50°F (10°C) | 59°F (15°C) | N/A | 1.3 | 0.4 |
| October | 55°F (13°C) | 39°F (4°C) | 47°F (8°C) | N/A | 10.4 | 0.0 |
| November | 41°F (5°C) | 29°F (-2°C) | 35°F (2°C) | N/A | 23.9 | 0.0 |
| December | 31°F (-1°C) | 20°F (-7°C) | 25°F (-4°C) | N/A | 30.6 | 0.0 |
Monthly Precipitation
Average monthly rainfall
January N/A
February N/A
March N/A
April N/A
May N/A
June N/A
July N/A
August N/A
September N/A
October N/A
November N/A
December N/A
Frost Dates & Growing Season
First Fall Freeze
October 10
50% probability date
Last Spring Freeze
May 27
50% probability date
Growing Season
136 days
Heating & Cooling Degree Days
Annual totals indicate energy demand for heating and cooling
Heating Degree Days
8,394
Higher = more heating needed
Cooling Degree Days
247
Higher = more cooling needed
Warmest Month
August
Coldest Month
January
Nearby Cities
What Grand Marais's climate means for you
Grand Marais runs 43°F a year - peaking in August, coldest in January.
- Gardeners get about 136 frost-free days, with the last spring freeze near May 27 - plan the planting calendar around it, not the regional average.
- Energy bills track 8,394 heating and 247 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: Grand Marais, MI
In Grand Marais, Michigan, the NOAA 1991–2020 climate normals put the annual average temperature at 43°F, ranging from a mean daily high of 51°F to a mean daily low of 34°F. August is typically the warmest month of the year, while January is the coldest. As thirty-year averages computed from station USW00014859, these numbers smooth out year-to-year noise into a working baseline for a typical month.
Rainfall (and snow, where it falls) shapes day-to-day life here as much as temperature does. Grand Marais sees about an uncharted amount of precipitation a year, predominantly as rainfall. The frost-free season averages 136 days, which directly shapes the planting calendar and growing potential for the area, with the last spring freeze near May 27 and the first fall freeze near October 10. On the energy side, 8,394 heating degree days and 247 cooling degree days tell the story of how often furnaces and air conditioners run during a normal year.
On PlainClimate's composite comfort index, Grand Marais scores 39/100 (Below Average), a blended measure that weighs temperature mildness, precipitation moderation, and extreme-weather frequency against one another. Shoulder seasons bring the mildest highs and lows in the monthly tables above, summer brings August-driven heat, and winter brings January-driven cold - use that rhythm for planning. These figures are thirty-year averages rather than forecasts, so a specific year may still run warmer, cooler, wetter, or drier than what's shown.
Frequently Asked Questions
What is the average temperature in Grand Marais, MI? ▼
The average annual temperature in Grand Marais, Michigan is 43°F. The warmest month averages 75°F (24°C) and the coldest averages 13°F (-10°C).
How much rain does Grand Marais get? ▼
Grand Marais receives an unknown amount of precipitation annually. Based on NOAA 30-year climate normals (1991-2020).
What is the comfort score for Grand Marais? ▼
Grand Marais has a climate comfort score of 39/100 (Below Average), milder than 4% of U.S. cities in the PlainClimate database.
When is the growing season in Grand Marais? ▼
Grand Marais has approximately 136 frost-free days per year, with the last spring freeze around May 27 and the first fall freeze around October 10.
How much energy does heating and cooling require in Grand Marais? ▼
Grand Marais has 8,394 heating degree days and 247 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 Grand Marais climate data come from? ▼
NOAA U.S. Climate Normals v1.0.1 (1991-2020), from weather station USW00014859 near Grand Marais.
Data Sources
Data source: NOAA U.S. Climate Normals v1.0.1 (1991-2020). Station: USW00014859. 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.