Photo: Dicklyon · CC BY-SA 4.0Richmond has some of the coolest summers among U.S. towns
Deep winter brings January lows near 43°. Winters are mild: January nights here are milder than in 92% of U.S. towns. The latest 30-year average runs 1.5° warmer than 1901–2000’s, with January up the most. Comfortable outdoor weather lasts from March to November, with highs of 63–75°.
A year in Richmond at a glance
Each month’s typical high and low, and what it brings.
What stands out about Richmond’s climate
Compared with towns across the U.S., with Richmond’s place in California beside it.
What a year in Richmond feels like
Typical highs and lows by season and by month, from NOAA’s 30-year normals.
Frost is rare
Frost and day counts come from NOAA’s station at Richmond, CA, 2.5 miles from the city’s center point, at about the same height.
The 2023 USDA map puts Richmond’s center in zone 10a: the coldest night of a typical winter, averaged over 1991–2020, reaches about 32°. Plant labels use the zone; frost dates tell you when to plant.
90° days by month
Average days at 90° or more
About 25 inches of rain a year
December is the wettest month and July the driest. Rain falls on about 58 days a year. Snow is rare: about 0.0" in a normal year at Richmond, CA, so most winters see none.
Rain + melted snow by month
Inches of water
Heating and cooling a home in Richmond
92% of the work is heating, so the furnace matters far more than the air conditioner. Months averaging under 55° run from December through February.
Degree days add up how far each day’s average falls below (heating) or rises above (cooling) 65° over a year. NOAA normals at Richmond, CA.
Living with Richmond’s climate
What the numbers mean for a garden, a free afternoon and a bad-weather day.
Zone 10a. Frost comes about 1 winter in 5, so tender plants can often stay out through winter.
Months with highs of 62–84° and lows of 40° or more: March, April, May, June, July, August, September, October and November. 66 miles of trails are waiting.
Parks & trails →Of the yearly building losses FEMA expects in Richmond from natural hazards, earthquakes are the largest share (74%); heat waves, cold waves, winter storms and ice storms together are 1%. Normals are averages; the hazards page covers the extremes.
Natural hazards →Richmond and its neighbors
Kensington has the coldest January nights next door (42°, 1° colder) and Kensington the hottest July afternoons (76°, 3° warmer). Differences under a degree are within what the 5 km grid can tell apart. Tap a town to see its climate.
Climates most like Richmond’s, farther away
TownRatings’ own comparison of NOAA 1991–2020 normals, not a NOAA product: places of 5,000+ at least 150 miles away, one per state, closest on January low, July high, precipitation and snow.
| Town | Jan. low | July high | Precip. | Snow |
|---|---|---|---|---|
| Richmond, CA | 43° | 73° | 25" | 0.0" |
| Oak Harbor, WA | 36° | 71° | 24" | 2.5" |
| Makawao, HI | 53° | 75° | 23" | 0.0" |
| Cedar Mill, OR | 36° | 81° | 39" | 3.6" |
| Nantucket, MA | 26° | 76° | 44" | 25" |
Temperatures and rain come from NOAA’s 5 km grid, so each town gets its own value. Snow and frost-free days come from the nearest weather station, so neighbors often share them.
Warmer than it used to be
The last 30 years in Richmond averaged 1.5° warmer than the 1900s. The biggest change is in January (+2.2°).
A bigger shift than in 62% of U.S. towns.
Change by month
The two periods overlap (1991–2000 is in both), which makes the gap a little smaller than it would be between separate periods. In a city of 115,000 people, part of the change is the city itself: pavement and buildings hold heat (the urban heat island).
How Richmond compares
Against 12,954 U.S. towns of 2,500 or more (one per 5 km climate cell), with Richmond’s place among California’s.
Richmond weather by month
Highs, lows and precipitation from NOAA’s grid at Richmond’s center; snow, wet days and snow on the ground from Richmond, CA. 1991–2020 normals.
| Month | High | Low | Rain + melt | Snow | Wet days | Snow on ground | 30-yr range |
|---|---|---|---|---|---|---|---|
| January | 57° | 43° | 4.9" | 0.0" | 10 | 0 | 47° – 55° |
| February | 60° | 46° | 4.7" | 0.0" | 9 | 0 | 49° – 59° |
| March | 63° | 47° | 3.6" | 0.0" | 9 | 0 | 50° – 60° |
| April | 65° | 49° | 1.6" | 0.0" | 6 | 0 | 54° – 60° |
| May | 69° | 52° | 0.7" | 0.0" | 3 | 0 | 56° – 65° |
| June | 73° | 54° | 0.2" | 0.0" | 1 | 0 | 60° – 66° |
| July | 73° | 55° | 0.0" | 0.0" | 0 | 0 | 61° – 68° |
| August | 74° | 56° | 0.1" | 0.0" | 0 | 0 | 62° – 69° |
| September | 75° | 56° | 0.1" | 0.0" | 0 | 0 | 62° – 69° |
| October | 71° | 53° | 1.1" | 0.0" | 3 | 0 | 59° – 68° |
| November | 63° | 48° | 2.6" | 0.0" | 6 | 0 | 49° – 60° |
| December | 57° | 44° | 5.2" | 0.0" | 10 | 0 | 46° – 55° |
| Year | 67° | 50° | 24.7" | 0.0" | 58 | 0 |
How much a month can swing
A normal is an average. November swings the most: from 1991 to 2020 its average ranged from 49° to 60°. June is the most reliable, staying within 6°.
Where Richmond’s numbers come from
Normals are 30-year averages, not a forecast. How TownRatings reads climate data →
- Temperatures and precipitation: NOAA’s gridded 1991–2020 normals for the 5 km cell at Richmond’s center.
- Snow: Richmond, CA.
- Frost, freezing nights, 90° and 100° days, heating and cooling: Richmond, CA, 2.5 miles from the city’s center point, at about the same height; the nearest station that passes our checks for distance, height and agreement with the grid.
- Growing zone: USDA Plant Hardiness Zone Map, 2023. USDA Agricultural Research Service and PRISM Group, Oregon State University, prism.oregonstate.edu/phzm, accessed 8 Oct 2026.
- Then and now: NOAA’s gridded normals for 1901–2000 at the same cell.
- Storms and extremes: FEMA National Risk Index (expected annual losses to buildings).
Common questions about Richmond’s climate
What is the weather like in Richmond?
A typical July afternoon reaches 73°, a January night drops to 43°, and snow is almost unheard of. Milder January nights than 92% of U.S. towns; cooler July afternoons than all but 132 U.S. towns.
How cold does it get in Richmond in winter?
January nights average 43°. A night at 32° or below comes in only some winters (0.3 a year on average). In the coldest January of the last 30 years the month averaged 47°.
How much snow does Richmond get?
About 0.0 inches in a normal winter at Richmond, CA, so most winters see none.
How hot does it get in Richmond?
July, with a typical high of 73° and a low of 55°. About 5 days a year reach 90° (Richmond, CA).
When is the first and last frost in Richmond?
Most years have no frost at all: a 32° night comes in about 22% of winters at Richmond, CA, usually in December or January.
What growing zone is Richmond in?
Zone 10a on the 2023 USDA Plant Hardiness Zone Map: the coldest night of a typical winter reaches about 32°.
What is the best time of year to visit Richmond?
By one simple rule (highs of 62–84° and lows of 40° or more), March, April, May, June, July, August, September, October and November. The rule is ours, not NOAA’s; the month table has the numbers to judge by.
Is Richmond getting warmer?
Yes: 1991–2020 averaged 1.5° warmer than 1901–2000 on NOAA’s grid. A bigger shift than 62% of U.S. towns.
Neighbors talk weather
Gardens, snow, and the best days of the year in Richmond.
Source: NOAA NCEI U.S. Climate Normals, 1991–2020 and 1901–2000; USDA/PRISM 2023 hardiness zones; FEMA National Risk Index. Today’s forecast: National Weather Service.