Climate Comfort Score
67/100
Good
NOAA 1991–2020 normals 56°F annual avg Public-domain federal data
Richardson GR SP, CA Climate
Average temperature, precipitation, and a comfort score, drawn from NOAA NCEI 1991–2020 normals →
- 56°F
- Avg annual temp
- 67/100
- Comfort score
- 65.4"
- Annual precip
- 266d
- Growing season
30-year climate normals from 1 weather station (1991-2020).
The climate verdict for Richardson GR SP
Richardson GR SP, California averages 56°F a year and scores 67/100 on the comfort index - good, milder than 57% of U.S. cities.
- 56°F
- average temperature, NOAA 1991-2020 normal
- 67/100
- comfort score, milder than 57% of U.S. cities
- 65.4"
- yearly precipitation total
- 266 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
56°F (13°C)
Avg High
67°F
Avg Low
45°F
Annual Precip
65.4"
Annual Snow
0.2"
Comfort Score
67/100
Good
Avg Annual Temperature
56°F
30-year mean (NOAA NCEI)
Annual Precipitation
65.4"
Liquid-equivalent total
Comfort score vs national 100-point ceiling (Richardson GR SP) 67.0%
National median (63)
PlainClimate composite, temperature mildness, humidity, precipitation, extreme-weather frequency. Good for the Richardson GR SP area.
How Richardson GR SP compares to every U.S. city
Richardson GR SP's comfort score vs. all U.S. cities
PlainClimate composite comfort index (1–100), NOAA 1991–2020 normals
67 Top 43% higher than 57% 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 Richardson GR SP
MethodologyZooming out from Richardson GR SP'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 | 50°F (10°C) | 39°F (4°C) | 44°F (7°C) | 12.7" | 0.0" | 5.4 | 0.0 |
| February | 53°F (11°C) | 40°F (4°C) | 46°F (8°C) | 11.3" | 0.0" | 3.4 | 0.0 |
| March | 59°F (15°C) | 41°F (5°C) | 50°F (10°C) | 9.7" | 0.0" | 2.1 | 0.0 |
| April | 64°F (18°C) | 42°F (6°C) | 53°F (12°C) | 5.1" | 0.0" | 0.9 | 0.0 |
| May | 72°F (22°C) | 47°F (8°C) | 59°F (15°C) | 1.9" | 0.0" | 0.8 | 1.1 |
| June | 77°F (25°C) | 51°F (11°C) | 64°F (18°C) | 0.8" | 0.0" | 0.0 | 2.4 |
| July | 86°F (30°C) | 54°F (12°C) | 70°F (21°C) | 0.0" | 0.0" | 0.1 | 9.5 |
| August | 87°F (30°C) | 54°F (12°C) | 70°F (21°C) | 0.0" | 0.0" | 0.0 | 9.4 |
| September | 83°F (28°C) | 50°F (10°C) | 67°F (19°C) | 0.4" | 0.0" | 0.0 | 7.3 |
| October | 70°F (21°C) | 45°F (7°C) | 57°F (14°C) | 2.7" | 0.0" | 0.0 | 0.5 |
| November | 55°F (13°C) | 41°F (5°C) | 48°F (9°C) | 6.7" | 0.0" | 2.7 | 0.0 |
| December | 49°F (9°C) | 38°F (4°C) | 44°F (7°C) | 14.0" | 0.2" | 6.3 | 0.0 |
Monthly Precipitation
Average monthly rainfall and snowfall
January 12.7"
16.6 days with precipitation
February 11.3"
14.0 days with precipitation
March 9.7"
11.5 days with precipitation
April 5.1"
9.0 days with precipitation
May 1.9"
5.6 days with precipitation
June 0.8"
2.1 days with precipitation
July 0.0"
0.2 days with precipitation
August 0.0"
0.4 days with precipitation
September 0.4"
0.7 days with precipitation
October 2.7"
4.3 days with precipitation
November 6.7"
12.0 days with precipitation
December 14.0"
Snow: 0.2"
15.1 days with precipitation
Frost Dates & Growing Season
First Fall Freeze
December 1
50% probability date
Last Spring Freeze
March 10
50% probability date
Growing Season
266 days
Heating & Cooling Degree Days
Annual totals indicate energy demand for heating and cooling
Heating Degree Days
3,734
Higher = more heating needed
Cooling Degree Days
494
Higher = more cooling needed
Warmest Month
August
Coldest Month
December
What Richardson GR SP's climate means for you
Richardson GR SP runs 56°F a year - peaking in August, coldest in December.
- Gardeners get about 266 frost-free days, with the last spring freeze near March 10 - plan the planting calendar around it, not the regional average.
- Energy bills track 3,734 heating and 494 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: Richardson GR SP, CA
In Richardson GR SP, California, the NOAA 1991–2020 climate normals put the annual average temperature at 56°F, ranging from a mean daily high of 67°F to a mean daily low of 45°F. August is typically the warmest month of the year, while December is the coldest. As thirty-year averages computed from station USC00047404, these numbers smooth out year-to-year noise into a working baseline for a typical month.
Richardson GR SP averages 65.4 inches of precipitation a year, with negligible snowfall, and that matters as much to daily life here as temperature does. The frost-free season averages 266 days, which directly shapes the planting calendar and growing potential for the area, with the last spring freeze near March 10 and the first fall freeze near December 1. As for energy demand, 3,734 heating degree days and 494 cooling degree days tell the story of how often furnaces and air conditioners run during a normal year.
On PlainClimate's composite comfort index, Richardson GR SP scores 67/100 (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, August-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 Richardson GR SP, CA? ▼
The average annual temperature in Richardson GR SP, California is 56°F. The warmest month averages 87°F (30°C) and the coldest averages 38°F (4°C).
How much rain does Richardson GR SP get? ▼
Richardson GR SP receives 65.4 inches of precipitation annually, including 0.2 inches of snow. Based on NOAA 30-year climate normals (1991-2020).
What is the comfort score for Richardson GR SP? ▼
Richardson GR SP has a climate comfort score of 67/100 (Good), milder than 57% of U.S. cities in the PlainClimate database.
When is the growing season in Richardson GR SP? ▼
Richardson GR SP has approximately 266 frost-free days per year, with the last spring freeze around March 10 and the first fall freeze around December 1.
How much energy does heating and cooling require in Richardson GR SP? ▼
Richardson GR SP has 3,734 heating degree days and 494 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 Richardson GR SP climate data come from? ▼
NOAA U.S. Climate Normals v1.0.1 (1991-2020), from weather station USC00047404 near Richardson GR SP.
Data Sources
Data source: NOAA U.S. Climate Normals v1.0.1 (1991-2020). Station: USC00047404. 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.