Climate Comfort Score
72/100
Good
NOAA 1991–2020 normals 63°F annual avg Public-domain federal data
Johnson Valley, CA Climate
Explore average temperature, rainfall, and comfort score sourced from NOAA NCEI's 1991–2020 climate normals →
- 63°F
- Avg annual temp
- 72/100
- Comfort score
- 5.6"
- Annual precip
- 273d
- Growing season
30-year climate normals from 1 weather station (1991-2020).
The climate verdict for Johnson Valley
Johnson Valley, California averages 63°F a year and scores 72/100 on the comfort index - good, milder than 66% of U.S. cities.
- 63°F
- annual average temperature (NOAA normal)
- 72/100
- comfort score, milder than 66% of U.S. cities
- 5.6"
- yearly precipitation total
- 273 days
- frost-free days per growing season
Based on NOAA U.S. Climate Normals (1991–2020) - 30-year averages describing the typical year, not a forecast.
Avg Temperature
63°F (17°C)
Avg High
76°F
Avg Low
51°F
Annual Precip
5.6"
Comfort Score
72/100
Good
Avg Annual Temperature
63°F
30-year mean (NOAA NCEI)
Annual Precipitation
5.6"
Liquid-equivalent total
Comfort score vs national 100-point ceiling (Johnson Valley) 72.0%
National median (63)
PlainClimate composite, temperature mildness, humidity, precipitation, extreme-weather frequency. Good for the Johnson Valley area.
How Johnson Valley compares to every U.S. city
Johnson Valley's comfort score vs. all U.S. cities
PlainClimate composite comfort index (1–100), NOAA 1991–2020 normals
72 Top 34% higher than 66% 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 Johnson Valley
MethodologyJohnson Valley'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 | 57°F (14°C) | 38°F (3°C) | 47°F (8°C) | 1.4" | 6.2 | 0.0 |
| February | 60°F (15°C) | 39°F (4°C) | 49°F (9°C) | 1.3" | 6.8 | 0.0 |
| March | 67°F (19°C) | 42°F (6°C) | 54°F (12°C) | 0.5" | 1.9 | 0.0 |
| April | 74°F (23°C) | 47°F (8°C) | 60°F (16°C) | 0.3" | 0.2 | 0.8 |
| May | 82°F (28°C) | 54°F (12°C) | 68°F (20°C) | 0.2" | 0.0 | 6.7 |
| June | 92°F (34°C) | 63°F (17°C) | 78°F (25°C) | 0.0" | 0.0 | 22.7 |
| July | 97°F (36°C) | 69°F (21°C) | 83°F (28°C) | 0.3" | 0.0 | 29.7 |
| August | 97°F (36°C) | 69°F (20°C) | 83°F (28°C) | 0.3" | 0.0 | 29.2 |
| September | 90°F (32°C) | 62°F (17°C) | 76°F (24°C) | 0.2" | 0.0 | 19.3 |
| October | 78°F (26°C) | 52°F (11°C) | 65°F (18°C) | 0.4" | 0.2 | 1.9 |
| November | 65°F (18°C) | 42°F (5°C) | 53°F (12°C) | 0.2" | 1.9 | 0.0 |
| December | 55°F (13°C) | 35°F (2°C) | 45°F (7°C) | 0.5" | 10.6 | 0.0 |
Monthly Precipitation
Average monthly rainfall
January 1.4"
February 1.3"
March 0.5"
April 0.3"
May 0.2"
June 0.0"
July 0.3"
August 0.3"
September 0.2"
October 0.4"
November 0.2"
December 0.5"
Frost Dates & Growing Season
First Fall Freeze
November 29
50% probability date
Last Spring Freeze
March 1
50% probability date
Growing Season
273 days
Heating & Cooling Degree Days
Annual totals indicate energy demand for heating and cooling
Heating Degree Days
2,643
Higher = more heating needed
Cooling Degree Days
2,107
Higher = more cooling needed
Warmest Month
July
Coldest Month
December
What Johnson Valley's climate means for you
Johnson Valley runs 63°F a year - peaking in July, coldest in December.
- Gardeners get about 273 frost-free days, with the last spring freeze near March 1 - plan the planting calendar around it, not the regional average.
- Energy bills track 2,643 heating and 2,107 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: Johnson Valley, CA
In Johnson Valley, California, the NOAA 1991–2020 climate normals put the annual average temperature at 63°F, ranging from a mean daily high of 76°F to a mean daily low of 51°F. July is typically the warmest month of the year, while December is the coldest. As thirty-year averages computed from station USC00044394, 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. Johnson Valley receives roughly 5.6 inches of precipitation each year, predominantly as rainfall. The frost-free season averages 273 days, which directly shapes the planting calendar and growing potential for the area, with the last spring freeze near March 1 and the first fall freeze near November 29. For energy use, 2,643 heating degree days and 2,107 cooling degree days tell the story of how often furnaces and air conditioners run during a normal year.
On PlainClimate's composite comfort index, Johnson Valley scores 72/100 (Good), a blended measure that weighs temperature mildness, precipitation moderation, and extreme-weather frequency against one another. The monthly tables above turn that into a planning tool: expect the mildest highs and lows in the shoulder seasons, July-driven heat at the peak of summer, and December-driven cold at the depth of winter. Every number here is a thirty-year average, not a forecast, so any given year can and does run warmer, cooler, wetter, or drier than the normal.
Frequently Asked Questions
What is the average temperature in Johnson Valley, CA? ▼
The average annual temperature in Johnson Valley, California is 63°F. The warmest month averages 97°F (36°C) and the coldest averages 35°F (2°C).
How much rain does Johnson Valley get? ▼
Johnson Valley receives 5.6 inches of precipitation annually. Based on NOAA 30-year climate normals (1991-2020).
What is the comfort score for Johnson Valley? ▼
Johnson Valley has a climate comfort score of 72/100 (Good), milder than 66% of U.S. cities in the PlainClimate database.
When is the growing season in Johnson Valley? ▼
Johnson Valley has approximately 273 frost-free days per year, with the last spring freeze around March 1 and the first fall freeze around November 29.
How much energy does heating and cooling require in Johnson Valley? ▼
Johnson Valley has 2,643 heating degree days and 2,107 cooling degree days annually, a fairly balanced heating/cooling split. 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 Johnson Valley climate data come from? ▼
NOAA U.S. Climate Normals v1.0.1 (1991-2020), from weather station USC00044394 near Johnson Valley.
Data Sources
Data source: NOAA U.S. Climate Normals v1.0.1 (1991-2020). Station: USC00044394. 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.