St. Petersburg endures about 58 more days above 90 °F each year.
San Diego sees rain or snow on roughly 93 fewer days each year. San Diego enjoys about 53 more sunny days a year than St. Petersburg.
The year at a glance
Averages from 30 years of climate history, 1991-2020
| San Diego | Metric | St. Petersburg |
|---|---|---|
| 283 days | Sunny daysclear or partly cloudy skies | 230 days |
| 12 in | Precipitationper year | 40 in |
| 38 days | Wet daysrain or snow per year | 132 days |
| 0 in | Snowfallper year | 0 in |
| 15 days | Hot daysabove 90 °F | 73 days |
| 0 days | Freezing nightsat or below 32 °F | 0 days |
| 74% | Humidityaverage relative | 75% |
| 64 °F | Average temperatureyear round | 75 °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 Diego high | 67 | 67 | 69 | 71 | 72 | 75 | 80 | 82 | 81 | 78 | 73 | 67 |
| St. Petersburg high | 69 | 72 | 76 | 81 | 87 | 89 | 90 | 90 | 89 | 84 | 77 | 72 |
| San Diego low | 46 | 47 | 50 | 53 | 57 | 60 | 64 | 65 | 64 | 58 | 50 | 45 |
| St. Petersburg low | 55 | 57 | 62 | 67 | 72 | 76 | 77 | 78 | 76 | 71 | 64 | 58 |
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 Diego | 2.3 | 2.9 | 1.9 | 0.9 | 0.4 | 0.1 | 0.1 | 0.1 | 0.2 | 0.6 | 0.9 | 1.9 |
| St. Petersburg | 2.4 | 1.8 | 2.2 | 1.9 | 2.6 | 6.2 | 5.9 | 6.0 | 5.2 | 2.3 | 1.5 | 1.9 |
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 Diego | 20 | 17 | 20 | 22 | 22 | 26 | 28 | 30 | 28 | 26 | 24 | 21 |
| St. Petersburg | 20 | 19 | 22 | 22 | 24 | 17 | 14 | 14 | 16 | 21 | 21 | 20 |
Keep comparing
Nearby cities and popular picks for each side of this matchup. Any two cities can be compared from the home page.
San Diego vs another city
- San Diego vs La Mesa, CA
- San Diego vs Lemon Grove, CA
- San Diego vs Santee, CA
- San Diego vs El Cajon, CA
- San Diego vs Casa de Oro-Mount Helix, CA
- San Diego vs La Presa, CA
- San Diego vs New York, NY
- San Diego vs Los Angeles, CA
- San Diego vs Chicago, IL
- San Diego vs Houston, TX
- San Diego vs Phoenix, AZ
- San Diego vs Philadelphia, PA
St. Petersburg vs another city
- St. Petersburg vs Gulfport, FL
- St. Petersburg vs Lealman, FL
- St. Petersburg vs Kenneth City, FL
- St. Petersburg vs South Pasadena, FL
- St. Petersburg vs St. Pete Beach, FL
- St. Petersburg vs West Lealman, FL
- St. Petersburg vs New York, NY
- St. Petersburg vs Los Angeles, CA
- St. Petersburg vs Chicago, IL
- St. Petersburg vs Houston, TX
- St. Petersburg vs Phoenix, AZ
- St. Petersburg 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).