Climate Comfort Score
49/100
Moderate
NOAA 1991–2020 normals 47°F annual avg Public-domain federal data
Forsyth, MT Climate
Annual temperature, rainfall, and a comfort score, sourced from NOAA NCEI's 1991–2020 normals →
- 47°F
- Avg annual temp
- 49/100
- Comfort score
- 16.0"
- Annual precip
- 143d
- Growing season
30-year climate normals from 1 weather station (1991-2020).
The climate verdict for Forsyth
Forsyth, Montana averages 47°F a year and scores 49/100 on the comfort index - moderate, milder than 18% of U.S. cities.
- 47°F
- yearly average temperature, NOAA normal
- 49/100
- comfort score, milder than 18% of U.S. cities
- 16.0"
- annual precipitation · 35" snow
- 143 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
47°F (8°C)
Avg High
60°F
Avg Low
34°F
Annual Precip
16.0"
Annual Snow
34.6"
Comfort Score
49/100
Moderate
Avg Annual Temperature
47°F
30-year mean (NOAA NCEI)
Annual Precipitation
16.0"
Plus 34.6" of snow
Comfort score vs national 100-point ceiling (Forsyth) 49.0%
National median (63)
PlainClimate composite, temperature mildness, humidity, precipitation, extreme-weather frequency. Moderate for the Forsyth area.
How Forsyth compares to every U.S. city
Forsyth's comfort score vs. all U.S. cities
PlainClimate composite comfort index (1–100), NOAA 1991–2020 normals
49 Top 82% higher than 18% 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 Forsyth
MethodologyThe chart below traces how the U.S. land temperature anomaly has moved against the global mean since 1900. For Forsyth, the NOAA 1991-2020 normal captures average conditions across that spread - notably, the most recent decade runs warmer than the 30-year mean itself.
- 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) | 0.6" | 7.7" | 30.3 | 0.0 |
| February | 38°F (3°C) | 14°F (-10°C) | 26°F (-4°C) | 0.6" | 7.3" | 26.9 | 0.0 |
| March | 49°F (10°C) | 23°F (-5°C) | 36°F (2°C) | 0.9" | 3.9" | 25.5 | 0.0 |
| April | 59°F (15°C) | 33°F (0°C) | 46°F (8°C) | 1.9" | 2.8" | 14.2 | 0.0 |
| May | 69°F (20°C) | 43°F (6°C) | 56°F (13°C) | 2.9" | 0.4" | 3.2 | 0.6 |
| June | 79°F (26°C) | 52°F (11°C) | 65°F (18°C) | 2.5" | 0.0" | 0.0 | 4.2 |
| July | 88°F (31°C) | 58°F (15°C) | 73°F (23°C) | 1.4" | 0.0" | 0.0 | 15.7 |
| August | 87°F (30°C) | 56°F (13°C) | 71°F (22°C) | 1.2" | 0.0" | 0.1 | 14.3 |
| September | 75°F (24°C) | 46°F (8°C) | 61°F (16°C) | 1.4" | 0.1" | 1.2 | 4.1 |
| October | 60°F (16°C) | 34°F (1°C) | 47°F (8°C) | 1.4" | 1.5" | 13.3 | 0.2 |
| November | 46°F (8°C) | 22°F (-6°C) | 34°F (1°C) | 0.7" | 4.0" | 26.7 | 0.0 |
| December | 35°F (2°C) | 13°F (-11°C) | 24°F (-4°C) | 0.6" | 6.9" | 30.5 | 0.0 |
Monthly Precipitation
Average monthly rainfall and snowfall
January 0.6"
Snow: 7.7"
6.3 days with precipitation
February 0.6"
Snow: 7.3"
5.9 days with precipitation
March 0.9"
Snow: 3.9"
6.6 days with precipitation
April 1.9"
Snow: 2.8"
8.3 days with precipitation
May 2.9"
Snow: 0.4"
10.6 days with precipitation
June 2.5"
10.1 days with precipitation
July 1.4"
7.2 days with precipitation
August 1.2"
5.5 days with precipitation
September 1.4"
Snow: 0.1"
5.7 days with precipitation
October 1.4"
Snow: 1.5"
7.0 days with precipitation
November 0.7"
Snow: 4.0"
5.8 days with precipitation
December 0.6"
Snow: 6.9"
5.3 days with precipitation
Frost Dates & Growing Season
First Fall Freeze
September 29
50% probability date
Last Spring Freeze
May 9
50% probability date
Growing Season
143 days
Heating & Cooling Degree Days
Annual totals indicate energy demand for heating and cooling
Heating Degree Days
7,248
Higher = more heating needed
Cooling Degree Days
619
Higher = more cooling needed
Warmest Month
July
Coldest Month
January
What Forsyth's climate means for you
Forsyth runs 47°F a year - peaking in July, coldest in January.
- Gardeners get about 143 frost-free days, with the last spring freeze near May 9 - plan the planting calendar around it, not the regional average.
- Energy bills track 7,248 heating and 619 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: Forsyth, MT
Forsyth, Montana runs an annual average of 47°F, ranging from a mean daily high of 60°F to a mean daily low of 34°F, per NOAA's 1991–2020 climate normals. July is typically the warmest month of the year, while January is the coldest. Drawn from station USC00243098, these thirty-year averages smooth out year-to-year swings into a baseline for what a typical month looks like here.
Rainfall (and snow, where it falls) shapes day-to-day life here as much as temperature does. Forsyth sees about 16.0 inches of precipitation a year, with 34.6 inches typically falling as snow. The frost-free season averages 143 days, which directly shapes the planting calendar and growing potential for the area, with the last spring freeze near May 9 and the first fall freeze near September 29. On the energy side, 7,248 heating degree days and 619 cooling degree days tell the story of how often furnaces and air conditioners run during a normal year.
On PlainClimate's composite comfort index, Forsyth scores 49/100 (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 January-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 Forsyth, MT? ▼
The average annual temperature in Forsyth, Montana is 47°F. The warmest month averages 88°F (31°C) and the coldest averages 10°F (-12°C).
How much rain does Forsyth get? ▼
Forsyth receives 16.0 inches of precipitation annually, including 34.6 inches of snow. Based on NOAA 30-year climate normals (1991-2020).
What is the comfort score for Forsyth? ▼
Forsyth has a climate comfort score of 49/100 (Moderate), milder than 18% of U.S. cities in the PlainClimate database.
When is the growing season in Forsyth? ▼
Forsyth has approximately 143 frost-free days per year, with the last spring freeze around May 9 and the first fall freeze around September 29.
How much energy does heating and cooling require in Forsyth? ▼
Forsyth has 7,248 heating degree days and 619 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 Forsyth climate data come from? ▼
NOAA U.S. Climate Normals v1.0.1 (1991-2020), from weather station USC00243098 near Forsyth.
Data Sources
Data source: NOAA U.S. Climate Normals v1.0.1 (1991-2020). Station: USC00243098. 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.