Climate Comfort Score
39/100
Below Average
NOAA 1991–2020 normals 44°F annual avg Public-domain federal data
Pompeys Pillar, MT Climate
Average temperature, precipitation, and a comfort score, drawn from NOAA NCEI 1991–2020 normals →
- 44°F
- Avg annual temp
- 39/100
- Comfort score
- 14.5"
- Annual precip
- 123d
- Growing season
30-year climate normals from 1 weather station (1991-2020).
The climate verdict for Pompeys Pillar
Pompeys Pillar, Montana averages 44°F a year and scores 39/100 on the comfort index - below average, milder than 4% of U.S. cities.
- 44°F
- annual average temperature (NOAA normal)
- 39/100
- comfort score, milder than 4% of U.S. cities
- 14.5"
- annual precipitation · 46" snow
- 123 days
- frost-free growing season
Based on NOAA U.S. Climate Normals (1991–2020) - 30-year averages describing the typical year, not a forecast.
Avg Temperature
44°F (7°C)
Avg High
58°F
Avg Low
31°F
Annual Precip
14.5"
Annual Snow
46.1"
Comfort Score
39/100
Below Average
Avg Annual Temperature
44°F
30-year mean (NOAA NCEI)
Annual Precipitation
14.5"
Plus 46.1" of snow
Comfort score vs national 100-point ceiling (Pompeys Pillar) 39.0%
National median (63)
PlainClimate composite, temperature mildness, humidity, precipitation, extreme-weather frequency. Below Average for the Pompeys Pillar area.
How Pompeys Pillar compares to every U.S. city
Pompeys Pillar'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 Pompeys Pillar
MethodologyHow the U.S. land temperature anomaly tracks against the global mean since 1900. The current NOAA 1991-2020 normal for Pompeys Pillar 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 | 34°F (1°C) | 10°F (-12°C) | 22°F (-6°C) | 0.5" | 6.7" | 29.3 | 0.0 |
| February | 37°F (3°C) | 12°F (-11°C) | 24°F (-4°C) | 0.6" | 9.8" | 26.8 | 0.0 |
| March | 46°F (8°C) | 20°F (-7°C) | 33°F (1°C) | 0.7" | 7.6" | 27.5 | 0.0 |
| April | 55°F (13°C) | 29°F (-2°C) | 42°F (6°C) | 1.6" | 4.2" | 18.4 | 0.0 |
| May | 65°F (18°C) | 39°F (4°C) | 52°F (11°C) | 2.6" | 1.1" | 5.4 | 0.2 |
| June | 75°F (24°C) | 48°F (9°C) | 61°F (16°C) | 2.6" | 0.0" | 0.3 | 2.4 |
| July | 85°F (29°C) | 54°F (12°C) | 70°F (21°C) | 1.4" | 0.0" | 0.0 | 13.7 |
| August | 85°F (30°C) | 52°F (11°C) | 69°F (20°C) | 0.9" | 0.0" | 0.1 | 12.3 |
| September | 73°F (23°C) | 42°F (6°C) | 58°F (14°C) | 1.2" | 0.2" | 1.8 | 3.2 |
| October | 58°F (14°C) | 30°F (-1°C) | 44°F (7°C) | 1.4" | 5.0" | 16.8 | 0.1 |
| November | 45°F (7°C) | 19°F (-7°C) | 32°F (0°C) | 0.5" | 4.4" | 25.4 | 0.0 |
| December | 36°F (2°C) | 12°F (-11°C) | 24°F (-5°C) | 0.4" | 7.1" | 30.0 | 0.0 |
Monthly Precipitation
Average monthly rainfall and snowfall
January 0.5"
Snow: 6.7"
6.5 days with precipitation
February 0.6"
Snow: 9.8"
7.9 days with precipitation
March 0.7"
Snow: 7.6"
7.4 days with precipitation
April 1.6"
Snow: 4.2"
9.3 days with precipitation
May 2.6"
Snow: 1.1"
11.2 days with precipitation
June 2.6"
11.5 days with precipitation
July 1.4"
7.7 days with precipitation
August 0.9"
6.2 days with precipitation
September 1.2"
Snow: 0.2"
6.8 days with precipitation
October 1.4"
Snow: 5.0"
8.3 days with precipitation
November 0.5"
Snow: 4.4"
5.7 days with precipitation
December 0.4"
Snow: 7.1"
6.0 days with precipitation
Frost Dates & Growing Season
First Fall Freeze
September 22
50% probability date
Last Spring Freeze
May 22
50% probability date
Growing Season
123 days
Heating & Cooling Degree Days
Annual totals indicate energy demand for heating and cooling
Heating Degree Days
7,958
Higher = more heating needed
Cooling Degree Days
419
Higher = more cooling needed
Warmest Month
July
Coldest Month
January
What Pompeys Pillar's climate means for you
Pompeys Pillar runs 44°F a year - peaking in July, coldest in January.
- Gardeners get about 123 frost-free days, with the last spring freeze near May 22 - plan the planting calendar around it, not the regional average.
- Energy bills track 7,958 heating and 419 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: Pompeys Pillar, MT
Based on station USC00246647 feeding NOAA's 1991–2020 climate normals, Pompeys Pillar, Montana averages 44°F a year, ranging from a mean daily high of 58°F to a mean daily low of 31°F. July is typically the warmest month of the year, while January 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.
Beyond temperature, Pompeys Pillar averages 14.5 inches of precipitation annually, with 46.1 inches typically falling as snow - a real factor for anyone planning to live, garden, or travel here. The frost-free season averages 123 days, which directly shapes the planting calendar and growing potential for the area, with the last spring freeze near May 22 and the first fall freeze near September 22. Turning to energy use, 7,958 heating degree days and 419 cooling degree days tell the story of how often furnaces and air conditioners run during a normal year.
On PlainClimate's composite comfort index, Pompeys Pillar scores 39/100 (Below Average), a blended measure that weighs temperature mildness, precipitation moderation, and extreme-weather frequency against one another. For planning purposes, look to the monthly tables above: shoulder seasons bring the mildest highs and lows, summer brings July-driven heat, and deep winter brings January-driven cold. Treat every figure here as a thirty-year average rather than a forecast - individual years routinely run warmer, cooler, wetter, or drier than the normal.
Frequently Asked Questions
What is the average temperature in Pompeys Pillar, MT? ▼
The average annual temperature in Pompeys Pillar, Montana is 44°F. The warmest month averages 85°F (30°C) and the coldest averages 10°F (-12°C).
How much rain does Pompeys Pillar get? ▼
Pompeys Pillar receives 14.5 inches of precipitation annually, including 46.1 inches of snow. Based on NOAA 30-year climate normals (1991-2020).
What is the comfort score for Pompeys Pillar? ▼
Pompeys Pillar 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 Pompeys Pillar? ▼
Pompeys Pillar has approximately 123 frost-free days per year, with the last spring freeze around May 22 and the first fall freeze around September 22.
How much energy does heating and cooling require in Pompeys Pillar? ▼
Pompeys Pillar has 7,958 heating degree days and 419 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 Pompeys Pillar climate data come from? ▼
NOAA U.S. Climate Normals v1.0.1 (1991-2020), from weather station USC00246647 near Pompeys Pillar.
Data Sources
Data source: NOAA U.S. Climate Normals v1.0.1 (1991-2020). Station: USC00246647. 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.