Climate Comfort Score
54/100
Moderate
NOAA 1991–2020 normals 54°F annual avg Public-domain federal data
Glennville, CA Climate
Temperature, precipitation, and comfort score from NOAA NCEI 1991–2020 normals →
- 54°F
- Avg annual temp
- 54/100
- Comfort score
- 19.4"
- Annual precip
- 159d
- Growing season
30-year climate normals from 1 weather station (1991-2020).
The climate verdict for Glennville
Glennville, California averages 54°F a year and scores 54/100 on the comfort index - moderate, milder than 27% of U.S. cities.
- 54°F
- annual average temperature (NOAA normal)
- 54/100
- comfort score, milder than 27% of U.S. cities
- 19.4"
- annual precipitation · 6" snow
- 159 days
- frost-free growing season
Based on NOAA U.S. Climate Normals (1991–2020) - 30-year averages describing the typical year, not a forecast.
Avg Temperature
54°F (12°C)
Avg High
70°F
Avg Low
38°F
Annual Precip
19.4"
Annual Snow
6.2"
Comfort Score
54/100
Moderate
Avg Annual Temperature
54°F
30-year mean (NOAA NCEI)
Annual Precipitation
19.4"
Plus 6.2" of snow
Comfort score vs national 100-point ceiling (Glennville) 54.0%
National median (63)
PlainClimate composite, temperature mildness, humidity, precipitation, extreme-weather frequency. Moderate for the Glennville area.
How Glennville compares to every U.S. city
Glennville's comfort score vs. all U.S. cities
PlainClimate composite comfort index (1–100), NOAA 1991–2020 normals
54 Top 73% higher than 27% 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 Glennville
MethodologySince 1900, U.S. land temperatures have tracked (and diverged from) the global mean - the chart below shows how. Glennville'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 | 57°F (14°C) | 28°F (-2°C) | 42°F (6°C) | 3.6" | 1.3" | 21.9 | 0.0 |
| February | 57°F (14°C) | 30°F (-1°C) | 43°F (6°C) | 3.5" | 1.6" | 17.5 | 0.0 |
| March | 60°F (15°C) | 33°F (0°C) | 46°F (8°C) | 3.1" | 1.6" | 14.8 | 0.0 |
| April | 64°F (18°C) | 35°F (2°C) | 50°F (10°C) | 1.7" | 0.4" | 8.3 | 0.0 |
| May | 72°F (22°C) | 41°F (5°C) | 56°F (14°C) | 0.8" | 0.0" | 1.8 | 0.9 |
| June | 82°F (28°C) | 46°F (8°C) | 64°F (18°C) | 0.2" | 0.0" | 0.3 | 7.2 |
| July | 89°F (32°C) | 52°F (11°C) | 71°F (22°C) | 0.1" | 0.0" | 0.0 | 16.3 |
| August | 89°F (32°C) | 50°F (10°C) | 70°F (21°C) | 0.1" | 0.0" | 0.0 | 16.6 |
| September | 84°F (29°C) | 45°F (7°C) | 65°F (18°C) | 0.1" | 0.0" | 0.4 | 8.3 |
| October | 73°F (23°C) | 38°F (3°C) | 56°F (13°C) | 0.9" | 0.0" | 4.7 | 0.6 |
| November | 62°F (17°C) | 32°F (0°C) | 47°F (8°C) | 1.9" | 0.1" | 15.2 | 0.0 |
| December | 55°F (13°C) | 27°F (-3°C) | 41°F (5°C) | 3.3" | 1.2" | 23.3 | 0.0 |
Monthly Precipitation
Average monthly rainfall and snowfall
January 3.6"
Snow: 1.3"
8.9 days with precipitation
February 3.5"
Snow: 1.6"
9.1 days with precipitation
March 3.1"
Snow: 1.6"
7.7 days with precipitation
April 1.7"
Snow: 0.4"
6.0 days with precipitation
May 0.8"
3.6 days with precipitation
June 0.2"
0.8 days with precipitation
July 0.1"
0.7 days with precipitation
August 0.1"
0.5 days with precipitation
September 0.1"
0.8 days with precipitation
October 0.9"
2.9 days with precipitation
November 1.9"
Snow: 0.1"
5.8 days with precipitation
December 3.3"
Snow: 1.2"
8.0 days with precipitation
Frost Dates & Growing Season
First Fall Freeze
October 17
50% probability date
Last Spring Freeze
May 11
50% probability date
Growing Season
159 days
Heating & Cooling Degree Days
Annual totals indicate energy demand for heating and cooling
Heating Degree Days
4,399
Higher = more heating needed
Cooling Degree Days
485
Higher = more cooling needed
Warmest Month
July
Coldest Month
December
What Glennville's climate means for you
Glennville runs 54°F a year - peaking in July, coldest in December.
- Gardeners get about 159 frost-free days, with the last spring freeze near May 11 - plan the planting calendar around it, not the regional average.
- Energy bills track 4,399 heating and 485 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: Glennville, CA
An annual average temperature of 54°F, ranging from a mean daily high of 70°F to a mean daily low of 38°F is what the NOAA 1991–2020 climate normals report for Glennville, California. July is typically the warmest month of the year, while December is the coldest. That baseline comes from station USC00043463 and thirty years of averaging, so it reflects a typical month rather than any one year's swings.
Beyond temperature, Glennville averages 19.4 inches of precipitation annually, with 6.2 inches typically falling as snow - a real factor for anyone planning to live, garden, or travel here. The frost-free season averages 159 days, which directly shapes the planting calendar and growing potential for the area, with the last spring freeze near May 11 and the first fall freeze near October 17. Turning to energy use, 4,399 heating degree days and 485 cooling degree days tell the story of how often furnaces and air conditioners run during a normal year.
On PlainClimate's composite comfort index, Glennville scores 54/100 (Moderate), 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 December-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 Glennville, CA? ▼
The average annual temperature in Glennville, California is 54°F. The warmest month averages 89°F (32°C) and the coldest averages 27°F (-3°C).
How much rain does Glennville get? ▼
Glennville receives 19.4 inches of precipitation annually, including 6.2 inches of snow. Based on NOAA 30-year climate normals (1991-2020).
What is the comfort score for Glennville? ▼
Glennville has a climate comfort score of 54/100 (Moderate), milder than 27% of U.S. cities in the PlainClimate database.
When is the growing season in Glennville? ▼
Glennville has approximately 159 frost-free days per year, with the last spring freeze around May 11 and the first fall freeze around October 17.
How much energy does heating and cooling require in Glennville? ▼
Glennville has 4,399 heating degree days and 485 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 Glennville climate data come from? ▼
NOAA U.S. Climate Normals v1.0.1 (1991-2020), from weather station USC00043463 near Glennville.
Data Sources
Data source: NOAA U.S. Climate Normals v1.0.1 (1991-2020). Station: USC00043463. 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.