Hot-summer Mediterranean climate
Climate Walnut Creek - California
Annual high69ºF
Annual low49ºF
Precipitation25.04 inch
| Month | HighºF | LowºF | Precipinch |
|---|---|---|---|
| Jan | 56 | 40 | 4.77 |
| Feb | 57 | 40 | 4.62 |
| Mar | 60 | 42 | 3.52 |
| Apr | 64 | 44 | 1.63 |
| May | 71 | 49 | 1.06 |
| Jun | 78 | 54 | 0.19 |
| Jul | 85 | 60 | 0.01 |
| Aug | 85 | 60 | 0.04 |
| Sep | 82 | 58 | 0.28 |
| Oct | 74 | 52 | 1.42 |
| Nov | 62 | 44 | 3.11 |
| Dec | 55 | 40 | 4.39 |
- JanHigh 56ºFLow 40ºFPrecip 4.77 inch
- FebHigh 57ºFLow 40ºFPrecip 4.62 inch
- MarHigh 60ºFLow 42ºFPrecip 3.52 inch
- AprHigh 64ºFLow 44ºFPrecip 1.63 inch
- MayHigh 71ºFLow 49ºFPrecip 1.06 inch
- JunHigh 78ºFLow 54ºFPrecip 0.19 inch
- JulHigh 85ºFLow 60ºFPrecip 0.01 inch
- AugHigh 85ºFLow 60ºFPrecip 0.04 inch
- SepHigh 82ºFLow 58ºFPrecip 0.28 inch
- OctHigh 74ºFLow 52ºFPrecip 1.42 inch
- NovHigh 62ºFLow 44ºFPrecip 3.11 inch
- DecHigh 55ºFLow 40ºFPrecip 4.39 inch
Climate summary
What is the average weather in Walnut Creek, California?
Walnut Creek experiences a hot-summer climate with dry summers and wetter winters. Summers are warm, while winters are cool, bringing moderate precipitation primarily as rain. This creates a strong seasonal contrast in both temperature and rainfall patterns.
Walnut Creek weather averages
Annual high69ºF
Annual low49ºF
Precipitation25.04 inch
Daily normals Walnut Creek - California - January
| Day | HighºF | LowºF | Prec/ | Prec/ | Snow/ | Snow/ |
|---|---|---|---|---|---|---|
| Jan 1 | 53.3 | 41.4 | 0.16 | 0.16 | 0.00 | 0.00 |
| Jan 2 | 53.3 | 41.4 | 0.31 | 0.31 | 0.00 | 0.00 |
| Jan 3 | 53.4 | 41.5 | 0.46 | 0.46 | 0.00 | 0.00 |
| Jan 4 | 53.4 | 41.5 | 0.62 | 0.62 | 0.00 | 0.00 |
| Jan 5 | 53.5 | 41.6 | 0.78 | 0.78 | 0.00 | 0.00 |
| Jan 6 | 53.5 | 41.6 | 0.93 | 0.93 | 0.00 | 0.00 |
| Jan 7 | 53.6 | 41.7 | 1.10 | 1.10 | 0.00 | 0.00 |
| Jan 8 | 53.6 | 41.7 | 1.27 | 1.27 | 0.00 | 0.00 |
| Jan 9 | 53.6 | 41.7 | 1.44 | 1.44 | 0.00 | 0.00 |
| Jan 10 | 53.7 | 41.8 | 1.61 | 1.61 | 0.00 | 0.00 |
| Jan 11 | 53.7 | 41.8 | 1.79 | 1.79 | 0.00 | 0.00 |
| Jan 12 | 53.7 | 41.8 | 1.97 | 1.97 | 0.00 | 0.00 |
| Jan 13 | 53.7 | 41.8 | 2.14 | 2.14 | 0.00 | 0.00 |
| Jan 14 | 53.8 | 41.8 | 2.32 | 2.32 | 0.00 | 0.00 |
| Jan 15 | 53.8 | 41.8 | 2.48 | 2.48 | 0.00 | 0.00 |
| Jan 16 | 53.8 | 41.8 | 2.65 | 2.65 | 0.00 | 0.00 |
| Jan 17 | 53.8 | 41.8 | 2.81 | 2.81 | 0.00 | 0.00 |
| Jan 18 | 53.8 | 41.8 | 2.97 | 2.97 | 0.00 | 0.00 |
| Jan 19 | 53.8 | 41.8 | 3.12 | 3.12 | 0.00 | 0.00 |
| Jan 20 | 53.8 | 41.8 | 3.28 | 3.28 | 0.00 | 0.00 |
| Jan 21 | 53.8 | 41.8 | 3.44 | 3.44 | 0.10 | 0.10 |
| Jan 22 | 53.8 | 41.8 | 3.60 | 3.60 | 0.10 | 0.10 |
| Jan 23 | 53.8 | 41.8 | 3.75 | 3.75 | 0.10 | 0.10 |
| Jan 24 | 53.8 | 41.7 | 3.91 | 3.91 | 0.10 | 0.10 |
| Jan 25 | 53.8 | 41.7 | 4.07 | 4.07 | 0.10 | 0.10 |
| Jan 26 | 53.8 | 41.7 | 4.24 | 4.24 | 0.10 | 0.10 |
| Jan 27 | 53.8 | 41.6 | 4.40 | 4.40 | 0.10 | 0.10 |
| Jan 28 | 53.8 | 41.6 | 4.56 | 4.56 | 0.10 | 0.10 |
| Jan 29 | 53.8 | 41.6 | 4.72 | 4.72 | 0.10 | 0.10 |
| Jan 30 | 53.8 | 41.6 | 4.89 | 4.89 | 0.10 | 0.10 |
| Jan 31 | 53.8 | 41.5 | 5.06 | 5.06 | 0.10 | 0.10 |
Precipitation and snow add up through the month (/mo) and the year (/yr)
Weather history Walnut Creek - July 2026
| Day | HighºF | LowºF | Precip.inch |
|---|---|---|---|
| Jul 1 | 75.9 | 48.0 | 0.00 |
| Jul 2 | 72.0 | 48.0 | 0.00 |
| Jul 3 | 75.0 | 53.1 | 0.00 |
| Jul 4 | 82.9 | 63.0 | 0.00 |
| Jul 5 | 84.0 | 62.1 | 0.00 |
| Jul 6 | 78.1 | 57.0 | 0.00 |
| Jul 7 | 78.1 | 46.9 | 0.00 |
| Jul 8 | 69.1 | 46.9 | 0.00 |
| Jul 9 | 79.0 | 52.0 | 0.00 |
| Jul 10 | 87.1 | 68.0 | 0.00 |
| Jul 11 | 82.9 | 66.9 | 0.00 |
| Jul 12 | 84.9 | 70.0 | 0.00 |
| Jul 13 | 90.0 | 75.0 | 0.00 |
| Jul 14 | 86.0 | 73.0 | 0.00 |
| Jul 15 | 93.9 | 73.0 | 0.00 |
| Jul 16 | 91.9 | 66.9 | 0.00 |
| Jul 17 | 81.0 | 61.0 | 0.00 |
| Jul 18 | 79.0 | 62.1 | 0.00 |
| Jul 19 | 82.0 | 66.9 | 0.00 |
| Jul 20 | 84.9 | 66.9 | 0.00 |
| Jul 21 | 84.9 | 66.9 | 0.00 |
| Jul 22 | 90.0 | 57.9 | 0.00 |
| Jul 23 | 73.0 | 61.0 | 0.00 |
| Jul 24 | 82.0 | 63.0 | 0.00 |
| Jul 25 | 82.9 | 64.0 | 0.00 |
| Jul 26 | 82.0 | 64.0 | 0.00 |
| Jul 27 | 79.0 | 61.0 | 0.00 |
| Jul 28 | 84.0 | 66.0 | 0.00 |
| Jul 29 | 82.9 | 64.9 | 0.00 |
| Jul 30 | 84.9 | 68.0 | 0.00 |
| Jul 31 | 91.0 | 70.0 | 0.00 |
The data for July 2026 is incomplete: some days or values are missing.
- –No data
- –Not yet observed or received
- TTrace, too small to measure
Observed extremes
- Highest max temperature93.9ºF · Jul 15
- Lowest max temperature69.1ºF · Jul 8
- Highest min temperature75.0ºF · Jul 13
- Lowest min temperature46.9ºF · Jul 7
Geo Walnut Creek - California
Location
- Country
- United States
- State
- California
- County
- –
- City
- Walnut Creek
- Zip Code
- 94595
- Elevation
- 151 ft
- Longitude
- -122.07
- Latitude
- 37.91
- ICAO
- –
- IATA
- –