Climate Comfort Score
44/100
Moderate
NOAA 1991–2020 normals 46°F annual avg Public-domain federal data
Jess Valley, CA Climate
Annual temperature, rainfall, and a comfort score, sourced from NOAA NCEI's 1991–2020 normals →
- 46°F
- Avg annual temp
- 44/100
- Comfort score
- 18.9"
- Annual precip
- 96d
- Growing season
30-year climate normals from 1 weather station (1991-2020).
The climate verdict for Jess Valley
Jess Valley, California averages 46°F a year and scores 44/100 on the comfort index - moderate, milder than 8% of U.S. cities.
- 46°F
- average temperature, NOAA 1991-2020 normal
- 44/100
- comfort score, milder than 8% of U.S. cities
- 18.9"
- annual precipitation · 82" snow
- 96 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
46°F (8°C)
Avg High
61°F
Avg Low
31°F
Annual Precip
18.9"
Annual Snow
82.0"
Comfort Score
44/100
Moderate
Avg Annual Temperature
46°F
30-year mean (NOAA NCEI)
Annual Precipitation
18.9"
Plus 82.0" of snow
Comfort score vs national 100-point ceiling (Jess Valley) 44.0%
National median (63)
PlainClimate composite, temperature mildness, humidity, precipitation, extreme-weather frequency. Moderate for the Jess Valley area.
How Jess Valley compares to every U.S. city
Jess Valley'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 Jess Valley
MethodologyZooming out from Jess Valley'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 | 43°F (6°C) | 21°F (-6°C) | 32°F (0°C) | 1.9" | 12.5" | 28.5 | 0.0 |
| February | 45°F (7°C) | 21°F (-6°C) | 33°F (1°C) | 1.6" | 8.7" | 26.1 | 0.0 |
| March | 50°F (10°C) | 24°F (-5°C) | 37°F (3°C) | 1.9" | 14.5" | 27.1 | 0.0 |
| April | 55°F (13°C) | 27°F (-3°C) | 41°F (5°C) | 2.4" | 14.4" | 23.4 | 0.0 |
| May | 64°F (18°C) | 34°F (1°C) | 49°F (10°C) | 2.8" | 4.2" | 11.8 | 0.0 |
| June | 74°F (23°C) | 40°F (4°C) | 57°F (14°C) | 1.5" | 0.4" | 4.4 | 0.8 |
| July | 84°F (29°C) | 47°F (8°C) | 65°F (19°C) | 0.4" | 0.0" | 0.3 | 7.0 |
| August | 84°F (29°C) | 46°F (8°C) | 65°F (18°C) | 0.4" | 0.0" | 0.3 | 5.2 |
| September | 77°F (25°C) | 39°F (4°C) | 58°F (15°C) | 0.6" | 0.1" | 3.8 | 1.6 |
| October | 65°F (18°C) | 31°F (-1°C) | 48°F (9°C) | 1.1" | 2.9" | 16.2 | 0.1 |
| November | 51°F (11°C) | 25°F (-4°C) | 38°F (3°C) | 1.9" | 8.1" | 24.8 | 0.0 |
| December | 42°F (6°C) | 20°F (-7°C) | 31°F (-1°C) | 2.4" | 16.2" | 28.4 | 0.0 |
Monthly Precipitation
Average monthly rainfall and snowfall
January 1.9"
Snow: 12.5"
9.1 days with precipitation
February 1.6"
Snow: 8.7"
8.6 days with precipitation
March 1.9"
Snow: 14.5"
10.0 days with precipitation
April 2.4"
Snow: 14.4"
9.8 days with precipitation
May 2.8"
Snow: 4.2"
8.3 days with precipitation
June 1.5"
Snow: 0.4"
4.8 days with precipitation
July 0.4"
1.6 days with precipitation
August 0.4"
1.9 days with precipitation
September 0.6"
Snow: 0.1"
2.7 days with precipitation
October 1.1"
Snow: 2.9"
5.0 days with precipitation
November 1.9"
Snow: 8.1"
8.1 days with precipitation
December 2.4"
Snow: 16.2"
9.3 days with precipitation
Frost Dates & Growing Season
First Fall Freeze
September 18
50% probability date
Last Spring Freeze
June 14
50% probability date
Growing Season
96 days
Heating & Cooling Degree Days
Annual totals indicate energy demand for heating and cooling
Heating Degree Days
7,019
Higher = more heating needed
Cooling Degree Days
147
Higher = more cooling needed
Warmest Month
July
Coldest Month
December
What Jess Valley's climate means for you
Jess Valley runs 46°F a year - peaking in July, coldest in December.
- Gardeners get about 96 frost-free days, with the last spring freeze near June 14 - plan the planting calendar around it, not the regional average.
- Energy bills track 7,019 heating and 147 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: Jess Valley, CA
An annual average temperature of 46°F, ranging from a mean daily high of 61°F to a mean daily low of 31°F is what the NOAA 1991–2020 climate normals report for Jess Valley, California. July is typically the warmest month of the year, while December is the coldest. That baseline comes from station USC00044374 and thirty years of averaging, so it reflects a typical month rather than any one year's swings.
Anyone planning to live, garden, or travel in Jess Valley should weigh precipitation alongside temperature: the annual average runs 18.9 inches, with 82.0 inches typically falling as snow. The frost-free season averages 96 days, which directly shapes the planting calendar and growing potential for the area, with the last spring freeze near June 14 and the first fall freeze near September 18. And on the energy front, 7,019 heating degree days and 147 cooling degree days tell the story of how often furnaces and air conditioners run during a normal year.
On PlainClimate's composite comfort index, Jess Valley 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 December-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 Jess Valley, CA? ▼
The average annual temperature in Jess Valley, California is 46°F. The warmest month averages 84°F (29°C) and the coldest averages 20°F (-7°C).
How much rain does Jess Valley get? ▼
Jess Valley receives 18.9 inches of precipitation annually, including 82.0 inches of snow. Based on NOAA 30-year climate normals (1991-2020).
What is the comfort score for Jess Valley? ▼
Jess Valley 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 Jess Valley? ▼
Jess Valley has approximately 96 frost-free days per year, with the last spring freeze around June 14 and the first fall freeze around September 18.
How much energy does heating and cooling require in Jess Valley? ▼
Jess Valley has 7,019 heating degree days and 147 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 Jess Valley climate data come from? ▼
NOAA U.S. Climate Normals v1.0.1 (1991-2020), from weather station USC00044374 near Jess Valley.
Data Sources
Data source: NOAA U.S. Climate Normals v1.0.1 (1991-2020). Station: USC00044374. 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.