San Lorenzo and Union City have remarkably similar climates.
The year at a glance
Averages from 30 years of climate history, 1991-2020
| San Lorenzo | Metric | Union City |
|---|---|---|
| 248 days | Sunny daysclear or partly cloudy skies | 251 days |
| 19 in | Precipitationper year | 19 in |
| 55 days | Wet daysrain or snow per year | 55 days |
| 0 in | Snowfallper year | 0 in |
| 8 days | Hot daysabove 90 °F | 11 days |
| 1 days | Freezing nightsat or below 32 °F | 2 days |
| 73% | Humidityaverage relative | 72% |
| 60 °F | Average temperatureyear round | 60 °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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| San Lorenzo high | 59 | 62 | 64 | 67 | 69 | 74 | 74 | 76 | 77 | 73 | 65 | 59 |
| Union City high | 59 | 62 | 65 | 67 | 71 | 75 | 77 | 78 | 78 | 73 | 65 | 59 |
| San Lorenzo low | 43 | 45 | 47 | 49 | 52 | 55 | 57 | 58 | 58 | 53 | 47 | 43 |
| Union City low | 43 | 45 | 47 | 49 | 52 | 55 | 57 | 58 | 57 | 53 | 47 | 43 |
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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| San Lorenzo | 3.7 | 3.8 | 2.9 | 1.3 | 0.7 | 0.1 | 0.0 | 0.0 | 0.1 | 0.8 | 1.8 | 3.4 |
| Union City | 3.6 | 3.8 | 2.9 | 1.6 | 0.8 | 0.2 | 0.0 | 0.0 | 0.1 | 0.9 | 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| San Lorenzo | 14 | 13 | 16 | 19 | 22 | 25 | 28 | 27 | 27 | 24 | 18 | 15 |
| Union City | 14 | 13 | 15 | 18 | 22 | 25 | 29 | 29 | 28 | 24 | 18 | 15 |
Keep comparing
Nearby cities and popular picks for each side of this matchup. Any two cities can be compared from the home page.
San Lorenzo vs another city
- San Lorenzo vs Ashland, CA
- San Lorenzo vs Cherryland, CA
- San Lorenzo vs San Leandro, CA
- San Lorenzo vs Hayward, CA
- San Lorenzo vs Castro Valley, CA
- San Lorenzo vs Fairview, CA
- San Lorenzo vs New York, NY
- San Lorenzo vs Los Angeles, CA
- San Lorenzo vs Chicago, IL
- San Lorenzo vs Houston, TX
- San Lorenzo vs Phoenix, AZ
- San Lorenzo vs Philadelphia, PA
Union City vs another city
- Union City vs Hayward, CA
- Union City vs Fairview, CA
- Union City vs Newark, CA
- Union City vs Cherryland, CA
- Union City vs Castro Valley, CA
- Union City vs New York, NY
- Union City vs Los Angeles, CA
- Union City vs Chicago, IL
- Union City vs Houston, TX
- Union City vs Phoenix, AZ
- Union City 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).