Climate Comfort Score
59/100
Moderate
NOAA 1991–2020 normals 48°F annual avg Public-domain federal data
Grangeville, ID Climate
Average temperature, precipitation, and a comfort score, drawn from NOAA NCEI 1991–2020 normals →
- 48°F
- Avg annual temp
- 59/100
- Comfort score
- 23.5"
- Annual precip
- 147d
- Growing season
30-year climate normals from 1 weather station (1991-2020).
The climate verdict for Grangeville
Grangeville, Idaho averages 48°F a year and scores 59/100 on the comfort index - moderate, milder than 39% of U.S. cities.
- 48°F
- yearly average temperature, NOAA normal
- 59/100
- comfort score, milder than 39% of U.S. cities
- 23.5"
- annual precipitation · 39" snow
- 147 days
- growing season, frost-free days
Based on NOAA U.S. Climate Normals (1991–2020) - 30-year averages describing the typical year, not a forecast.
Avg Temperature
48°F (9°C)
Avg High
58°F
Avg Low
37°F
Annual Precip
23.5"
Annual Snow
38.7"
Comfort Score
59/100
Moderate
Avg Annual Temperature
48°F
30-year mean (NOAA NCEI)
Annual Precipitation
23.5"
Plus 38.7" of snow
Comfort score vs national 100-point ceiling (Grangeville) 59.0%
National median (63)
PlainClimate composite, temperature mildness, humidity, precipitation, extreme-weather frequency. Moderate for the Grangeville area.
How Grangeville compares to every U.S. city
Grangeville's comfort score vs. all U.S. cities
PlainClimate composite comfort index (1–100), NOAA 1991–2020 normals
59 Top 61% higher than 39% 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 Grangeville
MethodologySince 1900, U.S. land temperatures have tracked (and diverged from) the global mean - the chart below shows how. Grangeville'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 | 38°F (3°C) | 25°F (-4°C) | 31°F (0°C) | 1.3" | 7.9" | 25.5 | 0.0 |
| February | 42°F (6°C) | 25°F (-4°C) | 34°F (1°C) | 1.4" | 6.2" | 23.5 | 0.0 |
| March | 49°F (10°C) | 29°F (-1°C) | 39°F (4°C) | 2.3" | 6.0" | 21.2 | 0.0 |
| April | 56°F (13°C) | 34°F (1°C) | 45°F (7°C) | 2.9" | 3.2" | 12.6 | 0.0 |
| May | 64°F (18°C) | 42°F (5°C) | 53°F (12°C) | 3.4" | 0.2" | 3.4 | 0.1 |
| June | 70°F (21°C) | 48°F (9°C) | 59°F (15°C) | 3.3" | 0.0" | 0.1 | 0.4 |
| July | 82°F (28°C) | 54°F (12°C) | 68°F (20°C) | 1.1" | 0.0" | 0.0 | 5.7 |
| August | 83°F (28°C) | 53°F (12°C) | 68°F (20°C) | 0.9" | 0.0" | 0.1 | 6.5 |
| September | 73°F (23°C) | 45°F (7°C) | 59°F (15°C) | 1.3" | 0.0" | 0.9 | 1.2 |
| October | 58°F (14°C) | 37°F (3°C) | 47°F (8°C) | 1.9" | 0.6" | 9.8 | 0.0 |
| November | 45°F (7°C) | 29°F (-2°C) | 37°F (3°C) | 1.9" | 5.0" | 20.6 | 0.0 |
| December | 37°F (3°C) | 24°F (-5°C) | 30°F (-1°C) | 1.8" | 9.6" | 26.9 | 0.0 |
Monthly Precipitation
Average monthly rainfall and snowfall
January 1.3"
Snow: 7.9"
9.6 days with precipitation
February 1.4"
Snow: 6.2"
8.4 days with precipitation
March 2.3"
Snow: 6.0"
11.2 days with precipitation
April 2.9"
Snow: 3.2"
13.9 days with precipitation
May 3.4"
Snow: 0.2"
12.8 days with precipitation
June 3.3"
11.6 days with precipitation
July 1.1"
5.5 days with precipitation
August 0.9"
4.9 days with precipitation
September 1.3"
5.2 days with precipitation
October 1.9"
Snow: 0.6"
9.7 days with precipitation
November 1.9"
Snow: 5.0"
11.2 days with precipitation
December 1.8"
Snow: 9.6"
10.1 days with precipitation
Frost Dates & Growing Season
First Fall Freeze
October 3
50% probability date
Last Spring Freeze
May 9
50% probability date
Growing Season
147 days
Heating & Cooling Degree Days
Annual totals indicate energy demand for heating and cooling
Heating Degree Days
6,675
Higher = more heating needed
Cooling Degree Days
313
Higher = more cooling needed
Warmest Month
July
Coldest Month
December
What Grangeville's climate means for you
Grangeville runs 48°F a year - peaking in July, coldest in December.
- Gardeners get about 147 frost-free days, with the last spring freeze near May 9 - plan the planting calendar around it, not the regional average.
- Energy bills track 6,675 heating and 313 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: Grangeville, ID
In Grangeville, Idaho, the NOAA 1991–2020 climate normals put the annual average temperature at 48°F, ranging from a mean daily high of 58°F to a mean daily low of 37°F. July is typically the warmest month of the year, while December is the coldest. As thirty-year averages computed from station USC00103771, these numbers smooth out year-to-year noise into a working baseline for a typical month.
Anyone planning to live, garden, or travel in Grangeville should weigh precipitation alongside temperature: the annual average runs 23.5 inches, with 38.7 inches typically falling as snow. The frost-free season averages 147 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 October 3. And on the energy front, 6,675 heating degree days and 313 cooling degree days tell the story of how often furnaces and air conditioners run during a normal year.
On PlainClimate's composite comfort index, Grangeville scores 59/100 (Moderate), a blended measure that weighs temperature mildness, precipitation moderation, and extreme-weather frequency against one another. Shoulder seasons bring the mildest highs and lows in the monthly tables above, summer brings July-driven heat, and winter brings December-driven cold - use that rhythm for planning. These figures are thirty-year averages rather than forecasts, so a specific year may still run warmer, cooler, wetter, or drier than what's shown.
Frequently Asked Questions
What is the average temperature in Grangeville, ID? ▼
The average annual temperature in Grangeville, Idaho is 48°F. The warmest month averages 83°F (28°C) and the coldest averages 24°F (-5°C).
How much rain does Grangeville get? ▼
Grangeville receives 23.5 inches of precipitation annually, including 38.7 inches of snow. Based on NOAA 30-year climate normals (1991-2020).
What is the comfort score for Grangeville? ▼
Grangeville has a climate comfort score of 59/100 (Moderate), milder than 39% of U.S. cities in the PlainClimate database.
When is the growing season in Grangeville? ▼
Grangeville has approximately 147 frost-free days per year, with the last spring freeze around May 9 and the first fall freeze around October 3.
How much energy does heating and cooling require in Grangeville? ▼
Grangeville has 6,675 heating degree days and 313 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 Grangeville climate data come from? ▼
NOAA U.S. Climate Normals v1.0.1 (1991-2020), from weather station USC00103771 near Grangeville.
Data Sources
Data source: NOAA U.S. Climate Normals v1.0.1 (1991-2020). Station: USC00103771. 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.