Climate Comfort Score
37/100
Below Average
NOAA 1991–2020 normals 40°F annual avg Public-domain federal data
Ketchum RS, ID Climate
Average temperature, precipitation, and a comfort score, drawn from NOAA NCEI 1991–2020 normals →
- 40°F
- Avg annual temp
- 37/100
- Comfort score
- 17.3"
- Annual precip
30-year climate normals from 1 weather station (1991-2020).
The climate verdict for Ketchum RS
Ketchum RS, Idaho averages 40°F a year and scores 37/100 on the comfort index - below average, milder than 3% of U.S. cities.
- 40°F
- annual average temperature (NOAA normal)
- 37/100
- comfort score, milder than 3% of U.S. cities
- 17.3"
- annual precipitation · 102" 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
54°F
Avg Low
27°F
Annual Precip
17.3"
Annual Snow
102.0"
Comfort Score
37/100
Below Average
Avg Annual Temperature
40°F
30-year mean (NOAA NCEI)
Annual Precipitation
17.3"
Plus 102.0" of snow
Comfort score vs national 100-point ceiling (Ketchum RS) 37.0%
National median (63)
PlainClimate composite, temperature mildness, humidity, precipitation, extreme-weather frequency. Below Average for the Ketchum RS area.
How Ketchum RS compares to every U.S. city
Ketchum RS's comfort score vs. all U.S. cities
PlainClimate composite comfort index (1–100), NOAA 1991–2020 normals
37 Top 97% higher than 3% 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 Ketchum RS
MethodologyHow the U.S. land temperature anomaly tracks against the global mean since 1900. The current NOAA 1991-2020 normal for Ketchum RS captures average conditions across the spread shown, the most recent decade is 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 | 31°F (0°C) | 8°F (-13°C) | 20°F (-7°C) | 2.3" | 27.0" | 31.0 | 0.0 |
| February | 35°F (2°C) | 11°F (-12°C) | 23°F (-5°C) | 1.9" | 17.2" | 27.9 | 0.0 |
| March | 43°F (6°C) | 19°F (-7°C) | 31°F (-1°C) | 1.8" | 10.5" | 30.4 | 0.0 |
| April | 52°F (11°C) | 27°F (-3°C) | 39°F (4°C) | 1.2" | 3.2" | 25.0 | 0.0 |
| May | 62°F (16°C) | 35°F (2°C) | 48°F (9°C) | 1.8" | 0.2" | 13.1 | 0.0 |
| June | 70°F (21°C) | 40°F (4°C) | 55°F (13°C) | 1.3" | 0.0" | 4.6 | 0.2 |
| July | 80°F (27°C) | 45°F (7°C) | 63°F (17°C) | 0.6" | 0.0" | 1.1 | 2.3 |
| August | 79°F (26°C) | 44°F (6°C) | 61°F (16°C) | 0.5" | 0.0" | 1.5 | 0.9 |
| September | 69°F (21°C) | 36°F (2°C) | 53°F (11°C) | 1.0" | 0.0" | 8.8 | 0.0 |
| October | 56°F (13°C) | 28°F (-2°C) | 42°F (5°C) | 1.4" | 1.6" | 24.7 | 0.0 |
| November | 41°F (5°C) | 17°F (-8°C) | 29°F (-1°C) | 1.2" | 10.3" | 29.5 | 0.0 |
| December | 30°F (-1°C) | 9°F (-13°C) | 20°F (-7°C) | 2.6" | 32.0" | 30.9 | 0.0 |
Monthly Precipitation
Average monthly rainfall and snowfall
January 2.3"
Snow: 27.0"
9.7 days with precipitation
February 1.9"
Snow: 17.2"
8.8 days with precipitation
March 1.8"
Snow: 10.5"
8.1 days with precipitation
April 1.2"
Snow: 3.2"
7.0 days with precipitation
May 1.8"
Snow: 0.2"
7.8 days with precipitation
June 1.3"
7.4 days with precipitation
July 0.6"
4.1 days with precipitation
August 0.5"
4.1 days with precipitation
September 1.0"
4.3 days with precipitation
October 1.4"
Snow: 1.6"
5.2 days with precipitation
November 1.2"
Snow: 10.3"
6.2 days with precipitation
December 2.6"
Snow: 32.0"
10.9 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
9,068
Higher = more heating needed
Cooling Degree Days
63
Higher = more cooling needed
Warmest Month
July
Coldest Month
January
What Ketchum RS's climate means for you
Ketchum RS runs 40°F a year - peaking in July, coldest in January.
- Energy bills track 9,068 heating and 63 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: Ketchum RS, ID
An annual average temperature of 40°F, ranging from a mean daily high of 54°F to a mean daily low of 27°F is what the NOAA 1991–2020 climate normals report for Ketchum RS, Idaho. July is typically the warmest month of the year, while January is the coldest. That baseline comes from station USC00104845 and thirty years of averaging, so it reflects a typical month rather than any one year's swings.
Ketchum RS averages 17.3 inches of precipitation a year, with 102.0 inches typically falling as snow, and that matters as much to daily life here as temperature does. Growing-season length varies with elevation and microclimate. As for energy demand, 9,068 heating degree days and 63 cooling degree days tell the story of how often furnaces and air conditioners run during a normal year.
On PlainClimate's composite comfort index, Ketchum RS scores 37/100 (Below Average), a blended measure that weighs temperature mildness, precipitation moderation, and extreme-weather frequency against one another. For planning purposes, look to the monthly tables above: shoulder seasons bring the mildest highs and lows, summer brings July-driven heat, and deep winter brings January-driven cold. Treat every figure here as a thirty-year average rather than a forecast - individual years routinely run warmer, cooler, wetter, or drier than the normal.
Frequently Asked Questions
What is the average temperature in Ketchum RS, ID? ▼
The average annual temperature in Ketchum RS, Idaho is 40°F. The warmest month averages 80°F (27°C) and the coldest averages 8°F (-13°C).
How much rain does Ketchum RS get? ▼
Ketchum RS receives 17.3 inches of precipitation annually, including 102.0 inches of snow. Based on NOAA 30-year climate normals (1991-2020).
What is the comfort score for Ketchum RS? ▼
Ketchum RS has a climate comfort score of 37/100 (Below Average), milder than 3% of U.S. cities in the PlainClimate database.
When is the growing season in Ketchum RS? ▼
Growing season data is not available for Ketchum RS.
How much energy does heating and cooling require in Ketchum RS? ▼
Ketchum RS has 9,068 heating degree days and 63 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 Ketchum RS climate data come from? ▼
NOAA U.S. Climate Normals v1.0.1 (1991-2020), from weather station USC00104845 near Ketchum RS.
Data Sources
Data source: NOAA U.S. Climate Normals v1.0.1 (1991-2020). Station: USC00104845. 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.