Clayton and Walnut Creek have remarkably similar climates.
The year at a glance
Averages from 30 years of climate history, 1991-2020
| Clayton | Metric | Walnut Creek |
|---|---|---|
| 255 days | Sunny daysclear or partly cloudy skies | 255 days |
| 18 in | Precipitationper year | 18 in |
| 52 days | Wet daysrain or snow per year | 52 days |
| 0 in | Snowfallper year | 0 in |
| 52 days | Hot daysabove 90 °F | 48 days |
| 6 days | Freezing nightsat or below 32 °F | 8 days |
| 69% | Humidityaverage relative | 71% |
| 62 °F | Average temperatureyear round | 62 °F |
Monthly temperatures
Average daily high and low for each month, in °F. The gap between the two lines is what an ordinary day feels like across the year.
Daily highs
Daily lows
View monthly temperatures as a table
| City | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Clayton high | 57 | 62 | 67 | 72 | 78 | 85 | 89 | 89 | 86 | 78 | 66 | 58 |
| Walnut Creek high | 58 | 62 | 67 | 72 | 78 | 85 | 88 | 88 | 85 | 78 | 66 | 58 |
| Clayton low | 41 | 44 | 47 | 49 | 53 | 57 | 59 | 59 | 58 | 53 | 46 | 41 |
| Walnut Creek low | 40 | 43 | 46 | 48 | 52 | 56 | 57 | 57 | 56 | 51 | 44 | 40 |
Monthly precipitation
Total rain plus melted snow for each month, in inches. Taller bars mean wetter months.
View monthly precipitation as a table
| City | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Clayton | 3.7 | 3.8 | 2.8 | 1.3 | 0.7 | 0.1 | 0.0 | 0.1 | 0.1 | 0.8 | 1.7 | 3.3 |
| Walnut Creek | 3.7 | 3.8 | 2.8 | 1.3 | 0.7 | 0.1 | 0.0 | 0.1 | 0.1 | 0.8 | 1.7 | 3.3 |
Monthly sunny days
Days each month with clear or partly cloudy skies, so compare the same month between cities.
View monthly sunny days as a table
| City | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Clayton | 13 | 13 | 16 | 20 | 24 | 27 | 30 | 29 | 28 | 25 | 17 | 14 |
| Walnut Creek | 13 | 13 | 16 | 20 | 24 | 27 | 30 | 29 | 28 | 25 | 17 | 14 |
Keep comparing
Nearby cities and popular picks for each side of this matchup. Any two cities can be compared from the home page.
Clayton vs another city
- Clayton vs Concord, CA
- Clayton vs Pittsburg, CA
- Clayton vs Bay Point, CA
- Clayton vs Contra Costa Centre, CA
- Clayton vs Alamo, CA
- Clayton vs New York, NY
- Clayton vs Los Angeles, CA
- Clayton vs Chicago, IL
- Clayton vs Houston, TX
- Clayton vs Phoenix, AZ
- Clayton vs Philadelphia, PA
Walnut Creek vs another city
- Walnut Creek vs Contra Costa Centre, CA
- Walnut Creek vs Saranap, CA
- Walnut Creek vs Alamo, CA
- Walnut Creek vs Pleasant Hill, CA
- Walnut Creek vs Lafayette, CA
- Walnut Creek vs Concord, CA
- Walnut Creek vs New York, NY
- Walnut Creek vs Los Angeles, CA
- Walnut Creek vs Chicago, IL
- Walnut Creek vs Houston, TX
- Walnut Creek vs Phoenix, AZ
- Walnut Creek vs Philadelphia, PA
About this data
Every figure on this page is a 30 year average computed from daily climate history for 1991-2020, using each city's own coordinates. Wet days count days with measurable precipitation, calibrated against the wet day counts in NOAA's published climate normals. Sunny days count clear plus partly cloudy days, defined as average cloud cover of 63 percent or less and calibrated against NOAA's published sky cover tables. Snowfall figures are model estimates anchored to NOAA station measurements near each city.
Weather data by Open-Meteo.com (CC BY 4.0). Contains modified Copernicus Climate Change Service information (ERA5, ERA5-Land).