Chula Vista, TX climate
Chula Vista has warm winters and hot summers, with very little rain. A typical July afternoon reaches 99°, a January night drops to 41°, and snow is almost unheard of.
NOAA 1991-2020 climate normals Updated once a decadeWhat a year in Chula Vista feels like
Winter
Spring
Summer
Fall
Chula Vista weather by month
Average highs, lows, rain and snow for every month, from NOAA’s 1991–2020 normals.
| Month | High | Low | Rain + melt | Snow | Wet days | Snow on ground | 30-yr range |
|---|---|---|---|---|---|---|---|
| January | 66° | 41° | 0.7" | 0 | 4 | 0 | 48° – 58° |
| February | 72° | 46° | 0.7" | 0 | 4 | 0 | 51° – 65° |
| March | 79° | 53° | 1.2" | 0 | 4 | 0 | 59° – 72° |
| April | 86° | 59° | 1.4" | 0 | 4 | 0 | 66° – 79° |
| May | 92° | 68° | 2.7" | 0 | 5 | 0 | 75° – 84° |
| June | 97° | 74° | 2.0" | 0 | 4 | 0 | 81° – 89° |
| July | 99° | 75° | 1.9" | 0 | 3 | 0 | 81° – 91° |
| August | 99° | 75° | 1.6" | 0 | 3 | 0 | 84° – 91° |
| September | 93° | 70° | 3.3" | 0 | 5 | 0 | 77° – 86° |
| October | 85° | 61° | 1.8" | 0 | 4 | 0 | 71° – 76° |
| November | 74° | 50° | 1.0" | 0 | 4 | 0 | 57° – 68° |
| December | 67° | 42° | 0.7" | 0 | 4 | 0 | 48° – 58° |
| Year | 84° | 59° | 18.8" | 0.0" | 45 | 0 |
“Wet days” have at least 0.01" of rain or melted snow. “Snow on ground” counts days with 1" or more. The 30-year range is the coldest and warmest that month’s average temperature got between 1991 and 2020.
Rain and snow in Chula Vista
Chula Vista gets 19 inches of rain and melted snow a year. September is the wettest month and February the driest. Rain or snow falls on about 45 days a year.
About 287 frost-free days a year
In half of years the last 32° night comes by February 19 and the first one by December 1. That leaves about 287 frost-free days for gardens, longer than 94% of U.S. towns.
Heating and cooling a home in Chula Vista
Engineers use “degree days” to estimate how hard a furnace or air conditioner works. In Chula Vista, 30% of that work is heating and 70% is cooling, so air conditioning is the bigger bill.
Degree days measure how far each day’s average temperature falls below or rises above 65°, added up over a year. Source: NOAA station normals.
Chula Vista and its neighbors
Chula Vista borders 1 town with climate data. January nights across them vary by 0.2°. Eagle Pass has both the coldest January nights (41°) and the hottest July afternoons (98°). Chula Vista’s January low is 41° and its July high 99°.
Temperatures and rain come from NOAA’s 5 km grid, so each town gets its own value.
How Chula Vista compares
Compared with every U.S. town and city on TownTapestry, each counted once.
Warmer than it used to be
The last 30 years in Chula Vista averaged 1.0° warmer than the 1900s. The biggest change is in February (+2.2°). The shift is smaller than in 72% of U.S. towns.
Change by month1991–2020 average minus 1901–2000 average, at Chula Vista’s spot on NOAA’s grid
How much a month can swing
A normal is an average, and real years wander around it. February swings the most: between 1991 and 2020 its average temperature ranged from 51° to 65°. October is the most reliable, staying within 6°.
Common questions about Chula Vista’s climate
What is the coldest month in Chula Vista?
January, with a typical high of 66° and a low of 41°.
What is the hottest month in Chula Vista?
August, with a typical high of 99° and a low of 75°. About 151 days a year reach 90°.
How much snow does Chula Vista get?
Almost none. A normal year brings 0.0 inches.
When is the first frost in Chula Vista?
In half of years the first 32° night comes by December 1, and the last spring frost by February 19.
What is the rainiest month in Chula Vista?
September, with 3.3 inches of rain and melted snow. The year totals 19 inches.
Temperatures and rainfall come from NOAA’s gridded climate normals for Chula Vista itself (about a 3-mile square). Snow, frost dates and day counts come from NOAA’s weather station at Eagle Pass 3n, TX (8 mi) away. Normals are 30-year averages, not a forecast. Source: NOAA NCEI U.S. Climate Normals, 1991–2020 and 1901–2000.