Climate averages 1991–2020
Chula Vista weather
in October.
A warm, fairly dry month: the 4th warmest and the 6th driest of the year. Meets the pleasant-weather rule
Long-term climate patterns, not a forecast for a particular trip.
October is a warm month in Chula Vista: daytime highs average 22.3°C and nights cool to about 15.3°C. By daytime temperature it is the 4th warmest of the 12 months.
Expect about 15 mm of rain on roughly 3 days, which makes October a fairly dry month (the 6th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 11 h 24 min on an average October day.
The nearest other city in this atlas is San Diego (11 km away). In October its highs average 23.0°C, 0.7°C warmer than Chula Vista, with 12 mm of rain.
Among the 498 cities listed in the United States, Chula Vista ranks joint 233rd of 498 for the warmest October highs and joint 23rd of 498 for the driest October (rainfall, lowest first). The mean October high of those 498 cities is 21.4°C; Chula Vista is 1.0°C warmer than that mean.
From October to November, average highs fall by 2.5°C to 19.8°C, and monthly rainfall rises from 15 mm to 24 mm.
The annual picture
October in context
Monthly rainfall
Average total · mmAverages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated
Every month, side by side
Chula Vista climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 17.1°C9.3°C | 9.3°C | 57 | 5.6 | 10.310 h |
| February | 16.8°C9.7°C | 9.7°C | 74 | 6.9 | 11.011 h |
| March | 17.3°C10.6°C | 10.6°C | 48 | 5.8 | 12.012 h |
| April | 18.4°C11.9°C | 11.9°C | 23 | 3.9 | 13.013 h |
| May | 19.4°C13.6°C | 13.6°C | 10 | 2.0 | 13.814 h |
| June | 21.2°C15.0°C | 15.0°C | 1.8 | 0.6 | 14.314 h |
| July | 23.5°C17.2°C | 17.2°C | 2.6 | 0.7 | 14.114 h |
| August | 24.5°C18.1°C | 18.1°C | 1.8 | 0.5 | 13.413 h |
| September | 24.2°C17.6°C | 17.6°C | 4.4 | 0.9 | 12.412 h |
| October, selected | 22.3°C15.3°C | 15.3°C | 15 | 2.5 | 11.411 h |
| November | 19.8°C12.1°C | 12.1°C | 24 | 3.3 | 10.511 h |
| December | 17.0°C9.4°C | 9.4°C | 47 | 5.3 | 10.010 h |
Rainfall is the average of the 30 separate monthly totals. A rain day is a local calendar day with at least 1 mm of precipitation. Daylight is the calculated sunrise-to-sunset length, not measured sunshine.
Compare places
October in nearby cities
- San Diego in OctoberUnited States · 11 kmHigh 23.0°C · Low 15.2°C · 12 mm rain
- Tijuana in OctoberMexico · 17 kmHigh 22.3°C · Low 15.2°C · 15 mm rain
- El Cajon in OctoberUnited States · 21 kmHigh 24.6°C · Low 14.6°C · 15 mm rain
- Rosarito in OctoberMexico · 31 kmHigh 22.5°C · Low 16.0°C · 13 mm rain
- Escondido in OctoberUnited States · 53 kmHigh 24.8°C · Low 13.5°C · 20 mm rain
- San Marcos in OctoberUnited States · 56 kmHigh 23.3°C · Low 13.7°C · 17 mm rain
- Vista in OctoberUnited States · 64 kmHigh 24.7°C · Low 14.2°C · 17 mm rain
- Oceanside in OctoberUnited States · 68 kmHigh 22.9°C · Low 15.6°C · 13 mm rain
Read the numbers correctly
Climate, not a promise.
These patterns help compare months. They cannot tell you the weather on a specific day of your trip.
Sources, method and limitsHow these numbers are made (what the highs, lows and rain days mean, the sources and the model cell used for Chula Vista) is explained once on the Chula Vista year overview and on the Sources, method and limits page.
El Cajon lies in the same rainfall cell, so its rainfall figures are identical to these; temperatures differ because they come from smaller 0.1° cells.