St Ignace Mackinac BR, MI Climate: Temperature by Month
Temperature and precipitation from NOAA NCEI 1991–2020 normals →, plus PlainClimate's derived comfort score
30-year climate normals (1991-2020) from St Ignace Mackinac BR's primary NOAA station, ST IGNACE MACKINAC BR.
The climate verdict for St Ignace Mackinac BR
St Ignace Mackinac BR, Michigan has a mixed annual climate rather than one dominant extreme. Its NOAA normal shows an annual average of 44°F. July is the warmest month at 67°F and January the coldest at 20°F.
- 44°F
- average temperature, NOAA 1991-2020 normal
- 169 days
- growing season, frost-free days
St Ignace Mackinac BR: NOAA 1991-2020 normals describe a typical year, not a forecast. Method: /methodology.
Normals record plate
Sheet USC00207274 · St Ignace Mackinac BR, MI 44°F mean
TEMP-COOL · RANK-COOL · PHOTO-FINISH · PRCP-UNK · SWING-WIDE · COMF-UNK · LOAD-HEAT · STN-1 · BOOK-PART
- TEMP-COOL 44°F
- RANK-COOL #1,098
- PHOTO-FINISH ≈ Idaho Falls Fan…
- PRCP-UNK Rain n/a
- SWING-WIDE 47°F
- COMF-UNK Comfort n/a
- LOAD-HEAT 7,796 HDD
- STN-1 USC00207274
- BOOK-PART 4/6 fields
Nearest mean-temperature peer: Idaho Falls Fanning Fld, ID (+ 0 °F mean)
Instrument codes from this station's NOAA 1991–2020 normals, mean temperature, corpus warmth rank, photo-finish peer station, precipitation band, seasonal swing, comfort composite, degree-day load, and field book, not a livability rating.
Mean-temperature neighbourhood
Nationwide NOAA normal poles and nearest peers, not a reprint of every MI station list.
- St Ignace Macki… (this station) 44°F
- Hot Morrisville, NY 44°F
- Near Idaho Falls Fan…, ID 44°F
- Near Pineview Dam, UT 44°F
- Near Oasis, NV 44°F
Climate Living Index · St Ignace Mackinac BR
St Ignace Mackinac BR: 31/100 · grade F
St Ignace Mackinac BR publishes 3 of 6 Living Index dimensions (NOAA annual/seasonal normals · NOAA daily multivariate normals); 3 missing weights rescale to 100.
PlainClimate-derived for St Ignace Mackinac BR, not an official NOAA rating. Breakpoints and limits.
| Dimension | Station value | Score |
|---|---|---|
| Normal heat + freeze calendar | 156 calendar days | 42/100 · D |
| Frost-free season | 169 days/year | 41/100 · D |
| Annual temperature balance | 44.2°F · 23.3° from 67.5°F | 17/100 · F |
St Ignace Mackinac BR · 2026-08-04 · NOAA NCEI Climate Normals · method .
National standing · heating-led station
Where St Ignace Mackinac BR sits across the climate record
Available NOAA 1991–2020 fields for St Ignace Mackinac BR are ranked only against stations that publish the same field, missing metrics stay blank rather than estimated.
- Annual temperature
- Cooler than 84%
- Among 6,861 stations, St Ignace Mackinac BR sits in the cooler third of annual means.
- Seasonal temperature swing
- 69th percentile swing
- Typical seasonal amplitude versus 6,861 complete station-years.
Monthly Temperatures
Average daily high and low temperatures by month
| Month | Avg High | Avg Low | Mean | Precip | Freeze Days | 90°F+ Days |
|---|---|---|---|---|---|---|
| January | 26°F (-3°C) | 14°F (-10°C) | 20°F (-7°C) | N/A | 30.1 | 0.0 |
| February | 29°F (-2°C) | 14°F (-10°C) | 21°F (-6°C) | N/A | 26.9 | 0.0 |
| March | 37°F (3°C) | 20°F (-7°C) | 28°F (-2°C) | N/A | 28.0 | 0.0 |
| April | 48°F (9°C) | 31°F (0°C) | 40°F (4°C) | N/A | 14.8 | 0.0 |
| May | 61°F (16°C) | 42°F (5°C) | 51°F (11°C) | N/A | 1.8 | 0.0 |
| June | 71°F (21°C) | 52°F (11°C) | 62°F (16°C) | N/A | 0.0 | 0.0 |
| July | 75°F (24°C) | 59°F (15°C) | 67°F (20°C) | N/A | 0.0 | 0.1 |
| August | 75°F (24°C) | 59°F (15°C) | 67°F (19°C) | N/A | 0.0 | 0.1 |
| September | 69°F (21°C) | 53°F (12°C) | 61°F (16°C) | N/A | 0.1 | 0.0 |
| October | 56°F (13°C) | 42°F (6°C) | 49°F (9°C) | N/A | 4.3 | 0.0 |
| November | 43°F (6°C) | 32°F (0°C) | 37°F (3°C) | N/A | 15.5 | 0.0 |
| December | 33°F (0°C) | 23°F (-5°C) | 28°F (-2°C) | N/A | 26.8 | 0.0 |
The year, day by day
Summer here tops out rather than builds: the warmest normal high is 76°F around July 27, short of 90°F on every date, while 156 dates carry a normal low at or below freezing, the coldest 12°F near January 26.
The freezing stretch
The normal low stays at or below 32°F into April 17, then returns to freezing around November 14, covering 156 dates in all.
Derived from the normal daily minimum. This is a different measure from the 50%-probability frost dates shown elsewhere on this page, which come from NOAA’s frost product.
The widest day
May 24 carries the biggest normal gap between afternoon and dawn, 20°F between the normal high and the normal low.
Look up any date
Any date's 1991–2020 normal for St Ignace Mackinac BR.
Where St Ignace Mackinac BR Stands Nationally
Among the steadiest day-night climates ranked: even the widest normal daily swing holds to roughly 20°F.
St Ignace Mackinac BR earns one nationally notable standing (outer quintile) against 6,860 NOAA 1991–2020 normals stations, middle-of-the-pack metrics stay silent here.
Monthly Precipitation
Average monthly rainfall
Frost Dates & Growing Season
First Fall Freeze
October 23
50% probability date
Last Spring Freeze
May 7
50% probability date
Growing Season
169 days
Heating & Cooling Degree Days
Annual totals indicate energy demand for heating and cooling
Heating Degree Days
7,796
Higher = more heating needed
Cooling Degree Days
268
Higher = more cooling needed
Warmest Month
July
Coldest Month
January
Nationwide similar cities
Other rankable U.S. places outside MI closest to St Ignace Mackinac BR on two NOAA annual-normal axes (mean temperature and annual precipitation). Chip rows use distinct link sets.
Closest by average temperature
Nearest out-of-state peers by annual mean temperature (44°F here).
- Andover, SD 44°F · 0.0°F off
- Greer, AZ 44°F · 0.0°F off
- Jordan, MT 44°F · 0.0°F off
- Jordan, MN 44°F · 0.0°F off
Data-derived climate profile
How St Ignace Mackinac BR's climate pattern fits together
heating led · mid swing
St Ignace Mackinac BR's energy balance leans toward cold weather: 7,796 annual heating degree days against 268 for cooling. Its 47.3°F seasonal range still makes the monthly rows more useful than the annual average alone.
St Ignace Mackinac BR's frost-free season lasts about 169 days, a middle-length window whose endpoints matter more than the annual average. It describes freeze probability, not year-specific planting conditions.
July and January mark the typical warm and cold ends of the calendar in St Ignace Mackinac BR's middle-range seasonal profile. The measured spread is 47.3°F. The annual average is 44°F. Neither the annual mean nor one extreme month represents the full calendar on its own.
A moisture-range label is withheld because St Ignace Mackinac BR's annual precipitation total is unavailable. Monthly source values remain visible where NOAA provides them, and no annual amount is reconstructed from incomplete data.
These labels group NOAA 1991-2020 normals from St Ignace Mackinac BR's primary station, so the winter figures are a thirty-year average and not a floor: a single hard season can run well below them. Treat each band as a descriptive range for St Ignace Mackinac BR, not an official NOAA class or a year-ahead forecast.
Questions about St Ignace Mackinac BR's climate
How cold does St Ignace Mackinac BR get in winter? ▼
How much energy does heating and cooling require in St Ignace Mackinac BR? ▼
Data Sources
Data source: NOAA U.S. Climate Normals v1.0.1 (1991-2020). All figures on this page are from St Ignace Mackinac BR's primary station: ST IGNACE MACKINAC BR (USC00207274). For informational purposes only.
Place identity: U.S. Census Bureau 2024 Gazetteer places. The conservative exact name-and-state crosswalk finds no Census place match, so PlainClimate treats this as a station-mapped location and does not claim it is a municipality. No exact Gazetteer row for St Ignace Mackinac BR; facility counts that depend on place identity are therefore an upper bound, not a municipal census.
On this page every temperature, precipitation, and derived score for St Ignace Mackinac BR comes from its primary NOAA station record. No figure on this page is typed in by an editor - each value is rendered from NOAA 1991-2020 U.S. Climate Normals. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of 1991–2020 normals.