Climate Comfort Score
39/100
Below Average
NOAA 1991–2020 normals 42°F annual avg Public-domain federal data
Port OF Morgan, MT Climate
Temperature, precipitation, and comfort score from NOAA NCEI 1991–2020 normals →
- 42°F
- Avg annual temp
- 39/100
- Comfort score
- 12.6"
- Annual precip
- 126d
- Growing season
30-year climate normals from 1 weather station (1991-2020).
The climate verdict for Port OF Morgan
Port OF Morgan, Montana averages 42°F a year and scores 39/100 on the comfort index - below average, milder than 4% of U.S. cities.
- 42°F
- average temperature, NOAA 1991-2020 normal
- 39/100
- comfort score, milder than 4% of U.S. cities
- 12.6"
- annual precipitation · 23" snow
- 126 days
- frost-free days per growing season
Based on NOAA U.S. Climate Normals (1991–2020) - 30-year averages describing the typical year, not a forecast.
Avg Temperature
42°F (5°C)
Avg High
54°F
Avg Low
29°F
Annual Precip
12.6"
Annual Snow
22.9"
Comfort Score
39/100
Below Average
Avg Annual Temperature
42°F
30-year mean (NOAA NCEI)
Annual Precipitation
12.6"
Plus 22.9" of snow
Comfort score vs national 100-point ceiling (Port OF Morgan) 39.0%
National median (63)
PlainClimate composite, temperature mildness, humidity, precipitation, extreme-weather frequency. Below Average for the Port OF Morgan area.
How Port OF Morgan compares to every U.S. city
Port OF Morgan'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 Port OF Morgan
MethodologyZooming out from Port OF Morgan's own normal, the chart below shows how the U.S. land temperature anomaly has tracked the global mean since 1900 - the most recent decade sits warmer than the 30-year mean shown here.
- 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 | 23°F (-5°C) | 4°F (-15°C) | 14°F (-10°C) | 0.5" | 3.5" | 30.5 | 0.0 |
| February | 28°F (-2°C) | 8°F (-13°C) | 18°F (-8°C) | 0.2" | 3.0" | 27.4 | 0.0 |
| March | 40°F (5°C) | 18°F (-8°C) | 29°F (-1°C) | 0.3" | 4.6" | 28.2 | 0.0 |
| April | 56°F (13°C) | 30°F (-1°C) | 43°F (6°C) | 0.9" | 1.4" | 18.1 | 0.0 |
| May | 67°F (19°C) | 39°F (4°C) | 53°F (12°C) | 1.8" | 0.6" | 6.8 | 0.0 |
| June | 74°F (23°C) | 48°F (9°C) | 61°F (16°C) | 3.0" | 0.0" | 0.1 | 0.9 |
| July | 83°F (28°C) | 54°F (12°C) | 68°F (20°C) | 1.8" | 0.0" | 0.0 | 6.7 |
| August | 83°F (28°C) | 52°F (11°C) | 68°F (20°C) | 1.3" | 0.0" | 0.0 | 6.8 |
| September | 72°F (22°C) | 43°F (6°C) | 57°F (14°C) | 1.3" | 0.3" | 2.8 | 1.2 |
| October | 56°F (13°C) | 31°F (-1°C) | 43°F (6°C) | 0.8" | 1.8" | 17.5 | 0.0 |
| November | 38°F (4°C) | 19°F (-7°C) | 28°F (-2°C) | 0.4" | 3.6" | 27.1 | 0.0 |
| December | 26°F (-3°C) | 8°F (-14°C) | 17°F (-8°C) | 0.4" | 4.1" | 30.6 | 0.0 |
Monthly Precipitation
Average monthly rainfall and snowfall
January 0.5"
Snow: 3.5"
3.7 days with precipitation
February 0.2"
Snow: 3.0"
3.5 days with precipitation
March 0.3"
Snow: 4.6"
3.3 days with precipitation
April 0.9"
Snow: 1.4"
5.3 days with precipitation
May 1.8"
Snow: 0.6"
8.5 days with precipitation
June 3.0"
11.5 days with precipitation
July 1.8"
7.4 days with precipitation
August 1.3"
6.3 days with precipitation
September 1.3"
Snow: 0.3"
5.8 days with precipitation
October 0.8"
Snow: 1.8"
4.6 days with precipitation
November 0.4"
Snow: 3.6"
3.8 days with precipitation
December 0.4"
Snow: 4.1"
3.7 days with precipitation
Frost Dates & Growing Season
First Fall Freeze
September 22
50% probability date
Last Spring Freeze
May 19
50% probability date
Growing Season
126 days
Heating & Cooling Degree Days
Annual totals indicate energy demand for heating and cooling
Heating Degree Days
8,838
Higher = more heating needed
Cooling Degree Days
339
Higher = more cooling needed
Warmest Month
July
Coldest Month
January
What Port OF Morgan's climate means for you
Port OF Morgan runs 42°F a year - peaking in July, coldest in January.
- Gardeners get about 126 frost-free days, with the last spring freeze near May 19 - plan the planting calendar around it, not the regional average.
- Energy bills track 8,838 heating and 339 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: Port OF Morgan, MT
The NOAA 1991–2020 climate normals describe Port OF Morgan, Montana as a location with an annual average temperature of 42°F, ranging from a mean daily high of 54°F to a mean daily low of 29°F. July is typically the warmest month of the year, while January is the coldest. These thirty-year averages, computed from station USC00246672, smooth out year-to-year variability and give a baseline expectation for typical conditions in any given month.
Beyond temperature, Port OF Morgan averages 12.6 inches of precipitation annually, with 22.9 inches typically falling as snow - a real factor for anyone planning to live, garden, or travel here. The frost-free season averages 126 days, which directly shapes the planting calendar and growing potential for the area, with the last spring freeze near May 19 and the first fall freeze near September 22. Turning to energy use, 8,838 heating degree days and 339 cooling degree days tell the story of how often furnaces and air conditioners run during a normal year.
On PlainClimate's composite comfort index, Port OF Morgan scores 39/100 (Below Average), 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 Port OF Morgan, MT? ▼
The average annual temperature in Port OF Morgan, Montana is 42°F. The warmest month averages 83°F (28°C) and the coldest averages 4°F (-15°C).
How much rain does Port OF Morgan get? ▼
Port OF Morgan receives 12.6 inches of precipitation annually, including 22.9 inches of snow. Based on NOAA 30-year climate normals (1991-2020).
What is the comfort score for Port OF Morgan? ▼
Port OF Morgan 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 Port OF Morgan? ▼
Port OF Morgan has approximately 126 frost-free days per year, with the last spring freeze around May 19 and the first fall freeze around September 22.
How much energy does heating and cooling require in Port OF Morgan? ▼
Port OF Morgan has 8,838 heating degree days and 339 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 Port OF Morgan climate data come from? ▼
NOAA U.S. Climate Normals v1.0.1 (1991-2020), from weather station USC00246672 near Port OF Morgan.
Data Sources
Data source: NOAA U.S. Climate Normals v1.0.1 (1991-2020). Station: USC00246672. 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.