Climate Comfort Score
47/100
Moderate
NOAA 1991–2020 normals 40°F annual avg 2 stations
Libby, MT Climate
Average temperature, precipitation, and a comfort score, drawn from NOAA NCEI 1991–2020 normals →
- 40°F
- Avg annual temp
- 47/100
- Comfort score
- 22.3"
- Annual precip
30-year climate normals from 2 weather stations (1991-2020).
The climate verdict for Libby
Libby, Montana averages 40°F a year and scores 47/100 on the comfort index - moderate, milder than 17% of U.S. cities.
- 40°F
- yearly average temperature, NOAA normal
- 47/100
- comfort score, milder than 17% of U.S. cities
- 22.3"
- annual precipitation · 93" snow
Based on NOAA U.S. Climate Normals (1991–2020) - 30-year averages describing the typical year, not a forecast.
Avg Temperature
40°F (5°C)
Avg High
53°F
Avg Low
28°F
Annual Precip
22.3"
Annual Snow
92.7"
Comfort Score
47/100
Moderate
Avg Annual Temperature
40°F
30-year mean (NOAA NCEI)
Annual Precipitation
22.3"
Plus 92.7" of snow
Comfort score vs national 100-point ceiling (Libby) 47.0%
National median (63)
PlainClimate composite, temperature mildness, humidity, precipitation, extreme-weather frequency. Moderate for the Libby area.
How Libby compares to every U.S. city
Libby's comfort score vs. all U.S. cities
PlainClimate composite comfort index (1–100), NOAA 1991–2020 normals
47 Top 83% higher than 17% 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 Libby
MethodologyLibby's NOAA 1991-2020 normal sits inside a longer story: U.S. land temperatures have been tracking (and drifting from) the global mean since 1900, and the chart below shows that spread, with the most recent decade running 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 | 30°F (-1°C) | 15°F (-9°C) | 23°F (-5°C) | 2.1" | 17.7" | 30.4 | 0.0 |
| February | 35°F (2°C) | 15°F (-9°C) | 25°F (-4°C) | 1.8" | 14.2" | 27.3 | 0.0 |
| March | 43°F (6°C) | 22°F (-6°C) | 33°F (0°C) | 2.2" | 14.6" | 29.1 | 0.0 |
| April | 53°F (11°C) | 28°F (-2°C) | 40°F (5°C) | 1.6" | 5.2" | 24.8 | 0.0 |
| May | 62°F (17°C) | 34°F (1°C) | 48°F (9°C) | 2.1" | 0.5" | 14.4 | 0.0 |
| June | 69°F (20°C) | 40°F (4°C) | 54°F (12°C) | 2.0" | 0.2" | 6.8 | 0.1 |
| July | 78°F (26°C) | 42°F (5°C) | 60°F (15°C) | 0.8" | 0.0" | 2.7 | 2.4 |
| August | 78°F (25°C) | 40°F (4°C) | 59°F (15°C) | 0.8" | 0.0" | 6.2 | 2.3 |
| September | 67°F (20°C) | 34°F (1°C) | 51°F (10°C) | 1.2" | 0.0" | 16.5 | 0.2 |
| October | 52°F (11°C) | 27°F (-3°C) | 40°F (4°C) | 2.1" | 3.0" | 23.0 | 0.0 |
| November | 37°F (3°C) | 22°F (-6°C) | 29°F (-1°C) | 2.9" | 15.4" | 27.2 | 0.0 |
| December | 29°F (-2°C) | 15°F (-9°C) | 22°F (-5°C) | 2.6" | 21.9" | 30.4 | 0.0 |
Monthly Precipitation
Average monthly rainfall and snowfall
January 2.1"
Snow: 17.7"
15.3 days with precipitation
February 1.8"
Snow: 14.2"
11.2 days with precipitation
March 2.2"
Snow: 14.6"
13.9 days with precipitation
April 1.6"
Snow: 5.2"
11.8 days with precipitation
May 2.1"
Snow: 0.5"
12.2 days with precipitation
June 2.0"
Snow: 0.2"
10.3 days with precipitation
July 0.8"
6.0 days with precipitation
August 0.8"
5.3 days with precipitation
September 1.2"
7.4 days with precipitation
October 2.1"
Snow: 3.0"
11.6 days with precipitation
November 2.9"
Snow: 15.4"
14.5 days with precipitation
December 2.6"
Snow: 21.9"
14.6 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
9,042
Higher = more heating needed
Cooling Degree Days
27
Higher = more cooling needed
Warmest Month
July
Coldest Month
December
What Libby's climate means for you
Libby runs 40°F a year - peaking in July, coldest in December.
- Energy bills track 9,042 heating and 27 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: Libby, MT
In Libby, Montana, the NOAA 1991–2020 climate normals put the annual average temperature at 40°F, ranging from a mean daily high of 53°F to a mean daily low of 28°F. July is typically the warmest month of the year, while December is the coldest. As thirty-year averages computed from 2 weather stations, 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. Libby sees about 22.3 inches of precipitation a year, with 92.7 inches typically falling as snow. Growing-season length varies with elevation and microclimate. On the energy side, 9,042 heating degree days and 27 cooling degree days tell the story of how often furnaces and air conditioners run during a normal year.
On PlainClimate's composite comfort index, Libby scores 47/100 (Moderate), a blended measure that weighs temperature mildness, precipitation moderation, and extreme-weather frequency against one another. The monthly tables above are the practical planning tool: mild highs and lows land in the shoulder seasons, July-driven heat peaks in summer, and December-driven cold sets in over deep winter. These are thirty-year averages, not a forecast - any single year can run warmer, wetter, drier, or cooler than the normal.
Frequently Asked Questions
What is the average temperature in Libby, MT? ▼
The average annual temperature in Libby, Montana is 40°F. The warmest month averages 78°F (26°C) and the coldest averages 15°F (-9°C).
How much rain does Libby get? ▼
Libby receives 22.3 inches of precipitation annually, including 92.7 inches of snow. Based on NOAA 30-year climate normals (1991-2020).
What is the comfort score for Libby? ▼
Libby has a climate comfort score of 47/100 (Moderate), milder than 17% of U.S. cities in the PlainClimate database.
When is the growing season in Libby? ▼
Growing season data is not available for Libby.
How much energy does heating and cooling require in Libby? ▼
Libby has 9,042 heating degree days and 27 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 Libby climate data come from? ▼
NOAA U.S. Climate Normals v1.0.1 (1991-2020), from 2 weather stations near Libby.
Data Sources
Data source: NOAA U.S. Climate Normals v1.0.1 (1991-2020). Station: USC00245020. 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.