Photo: Billy Hathorn · CC BY-SA 3.0Crystal City reaches 100° on about 43 days a year, more than all but 173 U.S. towns
In January the night’s low is typically 41°. September is the wettest month, February the driest. Winters are mild: January nights here are milder than in 90% of U.S. towns. The outdoor season runs from November to March, with highs of 66–79°.
A year in Crystal City at a glance
Each month’s typical high and low, and what it brings.
What stands out about Crystal City’s climate
Compared with towns across the U.S., with Crystal City’s place in Texas beside it.
What a year in Crystal City feels like
Typical highs and lows by season and by month, from NOAA’s 30-year normals.
About 307 frost-free days a year
In half of years the last 32° night comes by February 10 and the first by December 10. Frost and day counts come from NOAA’s station at Crystal City, TX, 0.8 miles from the town’s center, at about the same height.
The 2023 USDA map puts Crystal City’s center in zone 9a: the coldest night of a typical winter, averaged over 1991–2020, reaches about 24°. Plant labels use the zone; frost dates tell you when to plant.
Freezing nights by month
Average nights at or below 32°
90° days by month
Average days at 90° or more
About 21 inches of rain a year
September is the wettest month and February the driest. Rain falls on about 60 days a year. Snow is rare: about 0.0" in a normal year at Crystal City, TX, so most winters see none.
Rain + melted snow by month
Inches of water
Heating and cooling a home in Crystal City
21% of the work is heating, so air conditioning is the bigger bill. Months averaging under 55°: December and January.
Degree days add up how far each day’s average falls below (heating) or rises above (cooling) 65° over a year. NOAA normals at Crystal City, TX.
Living with Crystal City’s climate
What the numbers mean for a garden, a free afternoon and a bad-weather day.
307 frost-free days in zone 9a. The last frost comes by Feb 10 in half of years, so many gardeners wait a week or two past that to set out tomatoes. The first fall frost comes by Dec 10.
Months with highs of 62–84° and lows of 40° or more: January, February, March, November and December. 0.3 miles of trails are waiting.
Parks & trails →Of the yearly building losses FEMA expects in Crystal City from natural hazards, river flooding is the largest share (81%); heat waves, cold waves, winter storms and ice storms together are 14%. Normals are averages; the hazards page covers the extremes.
Natural hazards →Crystal City and similar climates
TownRatings has no climate map of the towns around Crystal City yet.
Climates most like Crystal City’s, farther away
TownRatings’ own comparison of NOAA 1991–2020 normals, not a NOAA product: places of 5,000+ at least 150 miles away, one per state, closest on January low, July high, precipitation and snow.
| Town | Jan. low | July high | Precip. | Snow |
|---|---|---|---|---|
| Crystal City, TX | 41° | 99° | 21" | 0.0" |
| Olivehurst, CA | 39° | 97° | 20" | 0.0" |
| Oro Valley, AZ | 38° | 100° | 13" | 0.0" |
| Ivins, UT | 32° | 100° | 11" | 1.2" |
| Sunland Park, NM | 32° | 96° | 9" | 2.0" |
Temperatures and precipitation come from NOAA’s 5 km grid; snow and day counts from the stations named on this page.
Warmer than it used to be
The last 30 years in Crystal City averaged 1.0° warmer than the 1900s. The biggest change is in February (+2.0°).
A smaller shift than in 77% of U.S. towns.
Change by month
The two periods overlap (1991–2000 is in both), which makes the gap a little smaller than it would be between separate periods.
How Crystal City compares
Against 12,954 U.S. towns of 2,500 or more (one per 5 km climate cell), with Crystal City’s place among Texas’.
Crystal City weather by month
Highs, lows and precipitation from NOAA’s grid at Crystal City’s center; snow, wet days and snow on the ground from Crystal City, TX. 1991–2020 normals.
| Month | High | Low | Rain + melt | Snow | Wet days | Snow on ground | 30-yr range |
|---|---|---|---|---|---|---|---|
| January | 66° | 41° | 1.0" | 0.0" | 6 | 0 | 49° – 59° |
| February | 72° | 46° | 0.9" | 0.0" | 5 | 0 | 52° – 65° |
| March | 79° | 53° | 1.6" | 0.0" | 5 | 0 | 59° – 71° |
| April | 86° | 59° | 1.4" | 0.0" | 5 | 0 | 66° – 78° |
| May | 91° | 68° | 2.7" | 0.0" | 5 | 0 | 75° – 83° |
| June | 97° | 73° | 2.2" | 0.0" | 5 | 0 | 81° – 89° |
| July | 99° | 74° | 2.1" | 0.0" | 5 | 0 | 81° – 90° |
| August | 99° | 74° | 1.7" | 0.0" | 4 | 0 | 84° – 91° |
| September | 93° | 70° | 3.0" | 0.0" | 6 | 0 | 78° – 87° |
| October | 85° | 61° | 2.0" | 0.0" | 5 | 0 | 71° – 77° |
| November | 75° | 50° | 1.2" | 0.0" | 5 | 0 | 58° – 68° |
| December | 67° | 42° | 1.0" | 0.0" | 5 | 0 | 48° – 58° |
| Year | 84° | 59° | 20.7" | 0.0" | 60 | 0 |
How much a month can swing
A normal is an average. February swings the most: from 1991 to 2020 its average ranged from 52° to 65°. October is the most reliable, staying within 6°.
Where Crystal City’s numbers come from
Normals are 30-year averages, not a forecast. How TownRatings reads climate data →
- Temperatures and precipitation: NOAA’s gridded 1991–2020 normals for the 5 km cell at Crystal City’s center.
- Snow: Crystal City, TX (NOAA station in town).
- Frost, freezing nights, 90° and 100° days, heating and cooling: Crystal City, TX, 0.8 miles from the town’s center, at about the same height; the nearest station that passes our checks for distance, height and agreement with the grid.
- Growing zone: USDA Plant Hardiness Zone Map, 2023. USDA Agricultural Research Service and PRISM Group, Oregon State University, prism.oregonstate.edu/phzm, accessed 8 Oct 2026.
- Then and now: NOAA’s gridded normals for 1901–2000 at the same cell.
- Storms and extremes: FEMA National Risk Index (expected annual losses to buildings).
Common questions about Crystal City’s climate
What is the weather like in Crystal City?
A typical July afternoon reaches 99°, a January night drops to 41°, and snow is almost unheard of. Milder January nights than 90% of U.S. towns; hotter July afternoons than all but 167 U.S. towns.
How cold does it get in Crystal City in winter?
January nights average 41°. About 8 nights a year reach 32° or below. In the coldest January of the last 30 years the month averaged 49°.
How much snow does Crystal City get?
About 0.0 inches in a normal winter at Crystal City, TX, so most winters see none.
How hot does it get in Crystal City?
July, with a typical high of 99° and a low of 74°. About 154 days a year reach 90° and 43 reach 100° (Crystal City, TX).
When is the first and last frost in Crystal City?
In half of years the last spring frost (32°) comes by February 10 and the first fall frost by December 10, about 307 frost-free days, at Crystal City, TX.
What growing zone is Crystal City in?
Zone 9a on the 2023 USDA Plant Hardiness Zone Map: the coldest night of a typical winter reaches about 24°.
What is the best time of year to visit Crystal City?
By one simple rule (highs of 62–84° and lows of 40° or more), January, February, March, November and December. The rule is ours, not NOAA’s; the month table has the numbers to judge by.
Is Crystal City getting warmer?
Yes: 1991–2020 averaged 1.0° warmer than 1901–2000 on NOAA’s grid. A smaller shift than 77% of U.S. towns.
Neighbors talk weather
Gardens, snow, and the best days of the year in Crystal City.
Source: NOAA NCEI U.S. Climate Normals, 1991–2020 and 1901–2000; USDA/PRISM 2023 hardiness zones; FEMA National Risk Index. Today’s forecast: National Weather Service.