Frost Dates for Rio Bravo, TX

Based on data from Laredo Afb weather station, 12 miles away

Elevation: 407 ft

Frost Dates

Last Spring Frost (50%) A 50% chance that the last spring frost has already passed by this date. Most gardeners use this as their primary planting guide. January 20
First Fall Frost (50%) A 50% chance that the first fall frost has occurred by this date. Plan to harvest or protect tender plants before this date. December 25

30% Probability

Only a 30% chance of frost remaining by this date. Use these dates for a safer planting window, especially for tender plants sensitive to cold.
Last Spring Frost February 4
First Fall Frost December 15

Hard Freeze (28°F)

Last Spring Hard Freeze January 6
First Fall Hard Freeze December 31
27.36°N, 99.48°W © OpenStreetMap

Growing Season

340 Days January 20 to December 25

USDA Hardiness Zone

Hardiness zones indicate which perennial plants can survive winter in your area. For annual vegetables, frost dates and growing season length matter more than hardiness zone.
Zone 10a

Avg. annual minimum: 30 to 35°F

Learn more

Köppen Climate

The Köppen climate classification system categorizes climates based on temperature and precipitation patterns.
BSh Hot Semi-Arid (Steppe)

Hot with low but not negligible rainfall. Less extreme than true desert. Dryland farming techniques and drought-tolerant varieties work well. Mulching and water conservation are key.

Köppen climate map

Temperature

Avg High Avg Temp Avg Low
Temperature table
Average monthly temperatures (°F)
Month Avg High Avg Temp Avg Low
January68°58°47°
February74°63°51°
March81°69°58°
April88°76°64°
May93°82°71°
June99°87°75°
July100°88°76°
August101°89°77°
September94°83°72°
October87°76°65°
November77°66°56°
December69°59°48°

Precipitation

Precipitation table
Average monthly precipitation (inches)
MonthPrecipitation
January1.4
February1.3
March2.3
April3.7
May6.7
June5.3
July4.8
August3.9
September5.6
October4.5
November2.5
December1.4

Sunrise / Sunset

Daylight Central Time (CT) Longest: 13h 45m · Shortest: 10h 15m
Sunrise and sunset table
Sunrise, sunset, and daylight on the 15th of each month (Central Time (CT))
Month Sunrise Sunset Daylight
January7:34 AM6:00 PM10h 26m
February7:21 AM6:24 PM11h 03m
March7:53 AM7:42 PM11h 48m
April7:18 AM7:58 PM12h 40m
May6:53 AM8:15 PM13h 22m
June6:46 AM8:30 PM13h 44m
July6:56 AM8:31 PM13h 35m
August7:13 AM8:11 PM12h 59m
September7:28 AM7:37 PM12h 09m
October7:43 AM7:03 PM11h 20m
November7:05 AM5:41 PM10h 37m
December7:26 AM5:42 PM10h 16m

Nearby Stations

Laredo 2, TX January 25 - December 17 Encinal, TX February 21 - December 9 Bruni, TXJanuary 30 - December 18 SALINILLAS, Mexico Zapata 1 S, TX January 19 - December 22 Hebbronville, TX February 4 - December 12

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