Climate Comfort Score
37/100
Below Average
NOAA 1991–2020 normals 43°F annual avg Public-domain federal data
Glen, MT Climate
Explore average temperature, rainfall, and comfort score sourced from NOAA NCEI's 1991–2020 climate normals →
- 43°F
- Avg annual temp
- 37/100
- Comfort score
- 9.2"
- Annual precip
30-year climate normals from 1 weather station (1991-2020).
The climate verdict for Glen
Glen, Montana averages 43°F a year and scores 37/100 on the comfort index - below average, milder than 3% of U.S. cities.
- 43°F
- average temperature, NOAA 1991-2020 normal
- 37/100
- comfort score, milder than 3% of U.S. cities
- 9.2"
- annual precipitation · 10" snow
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
60°F
Avg Low
25°F
Annual Precip
9.2"
Annual Snow
10.1"
Comfort Score
37/100
Below Average
Avg Annual Temperature
43°F
30-year mean (NOAA NCEI)
Annual Precipitation
9.2"
Plus 10.1" of snow
Comfort score vs national 100-point ceiling (Glen) 37.0%
National median (63)
PlainClimate composite, temperature mildness, humidity, precipitation, extreme-weather frequency. Below Average for the Glen area.
How Glen compares to every U.S. city
Glen's comfort score vs. all U.S. cities
PlainClimate composite comfort index (1–100), NOAA 1991–2020 normals
37 Top 97% higher than 3% 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 Glen
MethodologySince 1900, U.S. land temperatures have tracked (and diverged from) the global mean - the chart below shows how. Glen'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 | Snow | Freeze Days | 90°F+ Days |
|---|---|---|---|---|---|---|---|
| January | 37°F (3°C) | 8°F (-13°C) | 22°F (-5°C) | 0.2" | 2.0" | 30.1 | 0.0 |
| February | 41°F (5°C) | 11°F (-12°C) | 26°F (-3°C) | 0.4" | 1.2" | 27.0 | 0.0 |
| March | 50°F (10°C) | 19°F (-7°C) | 35°F (2°C) | 0.5" | 1.2" | 27.8 | 0.0 |
| April | 58°F (14°C) | 26°F (-4°C) | 42°F (5°C) | 0.8" | 1.1" | 22.6 | 0.0 |
| May | 68°F (20°C) | 33°F (0°C) | 50°F (10°C) | 1.7" | 0.0" | 10.9 | 0.2 |
| June | 76°F (24°C) | 40°F (4°C) | 58°F (14°C) | 1.7" | 0.0" | 1.8 | 1.7 |
| July | 86°F (30°C) | 44°F (7°C) | 65°F (18°C) | 0.8" | 0.0" | 0.3 | 11.0 |
| August | 85°F (29°C) | 41°F (5°C) | 63°F (17°C) | 0.8" | 0.0" | 1.3 | 8.2 |
| September | 76°F (24°C) | 33°F (1°C) | 55°F (13°C) | 0.7" | 0.0" | 11.9 | 0.7 |
| October | 61°F (16°C) | 25°F (-4°C) | 43°F (6°C) | 0.7" | 0.3" | 22.7 | 0.0 |
| November | 45°F (7°C) | 15°F (-9°C) | 30°F (-1°C) | 0.5" | 1.8" | 27.0 | 0.0 |
| December | 36°F (2°C) | 8°F (-14°C) | 22°F (-6°C) | 0.3" | 2.5" | 29.9 | 0.0 |
Monthly Precipitation
Average monthly rainfall and snowfall
January 0.2"
Snow: 2.0"
2.7 days with precipitation
February 0.4"
Snow: 1.2"
2.7 days with precipitation
March 0.5"
Snow: 1.2"
4.0 days with precipitation
April 0.8"
Snow: 1.1"
6.0 days with precipitation
May 1.7"
8.3 days with precipitation
June 1.7"
8.7 days with precipitation
July 0.8"
5.6 days with precipitation
August 0.8"
5.5 days with precipitation
September 0.7"
3.9 days with precipitation
October 0.7"
Snow: 0.3"
3.6 days with precipitation
November 0.5"
Snow: 1.8"
3.7 days with precipitation
December 0.3"
Snow: 2.5"
2.9 days with precipitation
Frost Dates & Growing Season
First Fall Freeze
N/A
50% probability date
Last Spring Freeze
N/A
50% probability date
Heating & Cooling Degree Days
Annual totals indicate energy demand for heating and cooling
Heating Degree Days
8,306
Higher = more heating needed
Cooling Degree Days
115
Higher = more cooling needed
Warmest Month
July
Coldest Month
December
What Glen's climate means for you
Glen runs 43°F a year - peaking in July, coldest in December.
- Energy bills track 8,306 heating and 115 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: Glen, MT
Based on station USC00243570 feeding NOAA's 1991–2020 climate normals, Glen, Montana averages 43°F a year, ranging from a mean daily high of 60°F to a mean daily low of 25°F. July is typically the warmest month of the year, while December is the coldest. Because these figures are thirty-year averages rather than any single year's readings, they describe the typical month, not a forecast for it.
Anyone planning to live, garden, or travel in Glen should weigh precipitation alongside temperature: the annual average runs 9.2 inches, with 10.1 inches typically falling as snow. Growing-season length varies with elevation and microclimate. And on the energy front, 8,306 heating degree days and 115 cooling degree days tell the story of how often furnaces and air conditioners run during a normal year.
On PlainClimate's composite comfort index, Glen scores 37/100 (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 July-driven heat, and winter brings December-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 Glen, MT? ▼
The average annual temperature in Glen, Montana is 43°F. The warmest month averages 86°F (30°C) and the coldest averages 8°F (-14°C).
How much rain does Glen get? ▼
Glen receives 9.2 inches of precipitation annually, including 10.1 inches of snow. Based on NOAA 30-year climate normals (1991-2020).
What is the comfort score for Glen? ▼
Glen has a climate comfort score of 37/100 (Below Average), milder than 3% of U.S. cities in the PlainClimate database.
When is the growing season in Glen? ▼
Growing season data is not available for Glen.
How much energy does heating and cooling require in Glen? ▼
Glen has 8,306 heating degree days and 115 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 Glen climate data come from? ▼
NOAA U.S. Climate Normals v1.0.1 (1991-2020), from weather station USC00243570 near Glen.
Data Sources
Data source: NOAA U.S. Climate Normals v1.0.1 (1991-2020). Station: USC00243570. 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.