Climate Comfort Score
44/100
Moderate
NOAA 1991–2020 normals 50°F annual avg Public-domain federal data
Jerome CO, ID Climate
Explore average temperature, rainfall, and comfort score sourced from NOAA NCEI's 1991–2020 climate normals →
- 50°F
- Avg annual temp
- 44/100
- Comfort score
- 9.9"
- Annual precip
- 166d
- Growing season
30-year climate normals from 1 weather station (1991-2020).
The climate verdict for Jerome CO
Jerome CO, Idaho averages 50°F a year and scores 44/100 on the comfort index - moderate, milder than 8% of U.S. cities.
- 50°F
- annual average temperature (NOAA normal)
- 44/100
- comfort score, milder than 8% of U.S. cities
- 9.9"
- precipitation, annual total
- 166 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
50°F (10°C)
Avg High
62°F
Avg Low
39°F
Annual Precip
9.9"
Comfort Score
44/100
Moderate
Avg Annual Temperature
50°F
30-year mean (NOAA NCEI)
Annual Precipitation
9.9"
Liquid-equivalent total
Comfort score vs national 100-point ceiling (Jerome CO) 44.0%
National median (63)
PlainClimate composite, temperature mildness, humidity, precipitation, extreme-weather frequency. Moderate for the Jerome CO area.
How Jerome CO compares to every U.S. city
Jerome CO'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 Jerome CO
MethodologyJerome CO's NOAA 1991-2020 normal sits inside a longer story: U.S. land temperatures have been tracking (and drifting from) the global mean since 1900, and the chart below shows that spread, with the most recent decade running 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 | Freeze Days | 90°F+ Days |
|---|---|---|---|---|---|---|
| January | 36°F (2°C) | 23°F (-5°C) | 29°F (-2°C) | 1.2" | 29.0 | 0.0 |
| February | 41°F (5°C) | 25°F (-4°C) | 33°F (1°C) | 0.7" | 24.2 | 0.0 |
| March | 53°F (11°C) | 32°F (0°C) | 42°F (6°C) | 1.1" | 19.2 | 0.0 |
| April | 60°F (16°C) | 36°F (2°C) | 48°F (9°C) | 1.1" | 10.8 | 0.0 |
| May | 70°F (21°C) | 44°F (7°C) | 57°F (14°C) | 1.4" | 2.3 | 0.4 |
| June | 79°F (26°C) | 51°F (11°C) | 65°F (19°C) | 0.6" | 0.0 | 4.0 |
| July | 90°F (32°C) | 59°F (15°C) | 74°F (23°C) | 0.1" | 0.0 | 17.1 |
| August | 88°F (31°C) | 57°F (14°C) | 72°F (22°C) | 0.3" | 0.0 | 11.6 |
| September | 78°F (25°C) | 49°F (9°C) | 63°F (17°C) | 0.3" | 0.5 | 2.3 |
| October | 63°F (17°C) | 39°F (4°C) | 51°F (10°C) | 0.8" | 7.2 | 0.0 |
| November | 48°F (9°C) | 29°F (-2°C) | 38°F (4°C) | 1.0" | 20.6 | 0.0 |
| December | 36°F (2°C) | 23°F (-5°C) | 29°F (-1°C) | 1.3" | 28.3 | 0.0 |
Monthly Precipitation
Average monthly rainfall
January 1.2"
9.2 days with precipitation
February 0.7"
8.3 days with precipitation
March 1.1"
9.1 days with precipitation
April 1.1"
8.2 days with precipitation
May 1.4"
7.9 days with precipitation
June 0.6"
4.5 days with precipitation
July 0.1"
1.5 days with precipitation
August 0.3"
2.0 days with precipitation
September 0.3"
3.6 days with precipitation
October 0.8"
5.3 days with precipitation
November 1.0"
7.5 days with precipitation
December 1.3"
10.6 days with precipitation
Frost Dates & Growing Season
First Fall Freeze
October 14
50% probability date
Last Spring Freeze
May 1
50% probability date
Growing Season
166 days
Heating & Cooling Degree Days
Annual totals indicate energy demand for heating and cooling
Heating Degree Days
6,073
Higher = more heating needed
Cooling Degree Days
714
Higher = more cooling needed
Warmest Month
July
Coldest Month
January
What Jerome CO's climate means for you
Jerome CO runs 50°F a year - peaking in July, coldest in January.
- Gardeners get about 166 frost-free days, with the last spring freeze near May 1 - plan the planting calendar around it, not the regional average.
- Energy bills track 6,073 heating and 714 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: Jerome CO, ID
Jerome CO, Idaho runs an annual average of 50°F, ranging from a mean daily high of 62°F to a mean daily low of 39°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 USW00004110, these thirty-year averages smooth out year-to-year swings into a baseline for what a typical month looks like here.
Jerome CO averages 9.9 inches of precipitation a year, predominantly as rainfall, and that matters as much to daily life here as temperature does. The frost-free season averages 166 days, which directly shapes the planting calendar and growing potential for the area, with the last spring freeze near May 1 and the first fall freeze near October 14. As for energy demand, 6,073 heating degree days and 714 cooling degree days tell the story of how often furnaces and air conditioners run during a normal year.
On PlainClimate's composite comfort index, Jerome CO scores 44/100 (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 Jerome CO, ID? ▼
The average annual temperature in Jerome CO, Idaho is 50°F. The warmest month averages 90°F (32°C) and the coldest averages 23°F (-5°C).
How much rain does Jerome CO get? ▼
Jerome CO receives 9.9 inches of precipitation annually. Based on NOAA 30-year climate normals (1991-2020).
What is the comfort score for Jerome CO? ▼
Jerome CO 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 Jerome CO? ▼
Jerome CO has approximately 166 frost-free days per year, with the last spring freeze around May 1 and the first fall freeze around October 14.
How much energy does heating and cooling require in Jerome CO? ▼
Jerome CO has 6,073 heating degree days and 714 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 Jerome CO climate data come from? ▼
NOAA U.S. Climate Normals v1.0.1 (1991-2020), from weather station USW00004110 near Jerome CO.
Data Sources
Data source: NOAA U.S. Climate Normals v1.0.1 (1991-2020). Station: USW00004110. 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.