Climate Comfort Score
44/100
Moderate
NOAA 1991–2020 normals 47°F annual avg Public-domain federal data
Alton, UT Climate
Explore average temperature, rainfall, and comfort score sourced from NOAA NCEI's 1991–2020 climate normals →
- 47°F
- Avg annual temp
- 44/100
- Comfort score
- 17.3"
- Annual precip
- 121d
- Growing season
30-year climate normals from 1 weather station (1991-2020).
The climate verdict for Alton
Alton, Utah averages 47°F a year and scores 44/100 on the comfort index - moderate, milder than 8% of U.S. cities.
- 47°F
- average temperature, NOAA 1991-2020 normal
- 44/100
- comfort score, milder than 8% of U.S. cities
- 17.3"
- annual precipitation · 78" snow
- 121 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
62°F
Avg Low
32°F
Annual Precip
17.3"
Annual Snow
77.5"
Comfort Score
44/100
Moderate
Avg Annual Temperature
47°F
30-year mean (NOAA NCEI)
Annual Precipitation
17.3"
Plus 77.5" of snow
Comfort score vs national 100-point ceiling (Alton) 44.0%
National median (63)
PlainClimate composite, temperature mildness, humidity, precipitation, extreme-weather frequency. Moderate for the Alton area.
How Alton compares to every U.S. city
Alton's comfort score vs. all U.S. cities
PlainClimate composite comfort index (1–100), NOAA 1991–2020 normals
44 Top 92% higher than 8% 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 Alton
MethodologySince 1900, U.S. land temperatures have tracked (and diverged from) the global mean - the chart below shows how. Alton'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 | 41°F (5°C) | 18°F (-8°C) | 30°F (-1°C) | 2.0" | 17.8" | 30.4 | 0.0 |
| February | 43°F (6°C) | 19°F (-7°C) | 31°F (0°C) | 2.1" | 18.7" | 27.2 | 0.0 |
| March | 52°F (11°C) | 24°F (-4°C) | 38°F (3°C) | 1.5" | 12.6" | 28.4 | 0.0 |
| April | 60°F (16°C) | 29°F (-2°C) | 45°F (7°C) | 0.8" | 5.2" | 21.8 | 0.0 |
| May | 69°F (21°C) | 35°F (2°C) | 52°F (11°C) | 0.9" | 0.3" | 10.3 | 0.1 |
| June | 81°F (27°C) | 43°F (6°C) | 62°F (17°C) | 0.4" | 0.4" | 1.4 | 2.4 |
| July | 85°F (30°C) | 51°F (11°C) | 68°F (20°C) | 1.2" | 0.0" | 0.0 | 6.6 |
| August | 83°F (28°C) | 50°F (10°C) | 67°F (19°C) | 1.9" | 0.0" | 0.0 | 3.1 |
| September | 76°F (24°C) | 43°F (6°C) | 59°F (15°C) | 1.7" | 0.0" | 1.4 | 0.3 |
| October | 64°F (18°C) | 34°F (1°C) | 49°F (9°C) | 1.8" | 2.0" | 13.0 | 0.0 |
| November | 51°F (11°C) | 24°F (-4°C) | 38°F (3°C) | 1.2" | 6.4" | 25.7 | 0.0 |
| December | 41°F (5°C) | 18°F (-8°C) | 29°F (-1°C) | 1.8" | 14.1" | 30.6 | 0.0 |
Monthly Precipitation
Average monthly rainfall and snowfall
January 2.0"
Snow: 17.8"
6.4 days with precipitation
February 2.1"
Snow: 18.7"
7.0 days with precipitation
March 1.5"
Snow: 12.6"
5.8 days with precipitation
April 0.8"
Snow: 5.2"
4.8 days with precipitation
May 0.9"
Snow: 0.3"
4.6 days with precipitation
June 0.4"
Snow: 0.4"
2.3 days with precipitation
July 1.2"
6.5 days with precipitation
August 1.9"
7.8 days with precipitation
September 1.7"
6.2 days with precipitation
October 1.8"
Snow: 2.0"
4.9 days with precipitation
November 1.2"
Snow: 6.4"
3.8 days with precipitation
December 1.8"
Snow: 14.1"
5.9 days with precipitation
Frost Dates & Growing Season
First Fall Freeze
September 30
50% probability date
Last Spring Freeze
June 1
50% probability date
Growing Season
121 days
Heating & Cooling Degree Days
Annual totals indicate energy demand for heating and cooling
Heating Degree Days
6,661
Higher = more heating needed
Cooling Degree Days
237
Higher = more cooling needed
Warmest Month
July
Coldest Month
December
What Alton's climate means for you
Alton runs 47°F a year - peaking in July, coldest in December.
- Gardeners get about 121 frost-free days, with the last spring freeze near June 1 - plan the planting calendar around it, not the regional average.
- Energy bills track 6,661 heating and 237 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: Alton, UT
In Alton, Utah, the NOAA 1991–2020 climate normals put the annual average temperature at 47°F, ranging from a mean daily high of 62°F to a mean daily low of 32°F. July is typically the warmest month of the year, while December is the coldest. As thirty-year averages computed from station USC00420086, these numbers smooth out year-to-year noise into a working baseline for a typical month.
Precipitation patterns matter as much as temperature for anyone planning to live, garden, or travel here. Alton receives roughly 17.3 inches of precipitation each year, with 77.5 inches typically falling as snow. The frost-free season averages 121 days, which directly shapes the planting calendar and growing potential for the area, with the last spring freeze near June 1 and the first fall freeze near September 30. For energy use, 6,661 heating degree days and 237 cooling degree days tell the story of how often furnaces and air conditioners run during a normal year.
On PlainClimate's composite comfort index, Alton scores 44/100 (Moderate), a blended measure that weighs temperature mildness, precipitation moderation, and extreme-weather frequency against one another. Use the monthly tables above to plan around specific windows, shoulder seasons for mild highs and lows, peak summer for July-driven heat, or deep winter for December-driven cold. All figures here are thirty-year averages: any single year may run warmer, wetter, drier, or cooler than the normal, so treat them as planning guidance rather than forecasts.
Frequently Asked Questions
What is the average temperature in Alton, UT? ▼
The average annual temperature in Alton, Utah is 47°F. The warmest month averages 85°F (30°C) and the coldest averages 18°F (-8°C).
How much rain does Alton get? ▼
Alton receives 17.3 inches of precipitation annually, including 77.5 inches of snow. Based on NOAA 30-year climate normals (1991-2020).
What is the comfort score for Alton? ▼
Alton has a climate comfort score of 44/100 (Moderate), milder than 8% of U.S. cities in the PlainClimate database.
When is the growing season in Alton? ▼
Alton has approximately 121 frost-free days per year, with the last spring freeze around June 1 and the first fall freeze around September 30.
How much energy does heating and cooling require in Alton? ▼
Alton has 6,661 heating degree days and 237 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 Alton climate data come from? ▼
NOAA U.S. Climate Normals v1.0.1 (1991-2020), from weather station USC00420086 near Alton.
Data Sources
Data source: NOAA U.S. Climate Normals v1.0.1 (1991-2020). Station: USC00420086. 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.