Jefferson, Texas climate: Normal weather by month, frost dates and records
Jefferson's normal year runs from 34°F January nights to 94°F July afternoons, with 49.7 inches of precipitation and 1 inch of snow a year. (NOAA 1991-2020 normals)
In metric: a yearly mean of 18.2°C, January lows of 1°C, July highs of 34°C, 1,263 mm of precipitation a year.
- NOAA stationJefferson
- Station IDUSC00414577
- Location32.77°N 94.36°W
- Elevation211 ft (64 m)
- Population1,996
On October 23, the normal high in Jefferson is 76°F and the normal low 49°F, and the chance of measurable rain or snow is 24%.
Normals describe a typical year at the station, not a forecast. The National Weather Service forecast for Jefferson.
- Jan 57° 34°
- Feb 61° 37°
- Mar 69° 44°
- Apr 77° 52°
- May 83° 61°
- Jun 91° 69°
- Jul 94° 72°
- Aug 95° 71°
- Sep 89° 64°
- Oct 79° 52°
- Nov 67° 42°
- Dec 59° 35°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
What is the weather like in Jefferson each month?
July is the warmest month, with normal highs of 94°F; January the coldest, with normal lows of 34°F. The most precipitation falls in May (5.11 in), the least in August (2.42 in).
| Month | High | Low | Mean | Precip. | Snow | Wet days | 90°F days | Freezing nights | Daylight |
|---|---|---|---|---|---|---|---|---|---|
| January | 57°F | 34°F | 45.5°F | 4.08 | 0.5 | 8 | <1 | 17 | 10 h 10 min |
| February | 61°F | 37°F | 49.1°F | 4.23 | 0.7 | 9 | <1 | 10 | 11 h |
| March | 69°F | 44°F | 56.8°F | 4.83 | 0.1 | 9 | <1 | 5 | 12 h |
| April | 77°F | 52°F | 64.1°F | 4.74 | 0.0 | 8 | 1 | 1 | 13 h |
| May | 83°F | 61°F | 72.3°F | 5.11 | 0.0 | 8 | 5 | <1 | 13 h 50 min |
| June | 91°F | 69°F | 79.9°F | 5.10 | 0.0 | 8 | 17 | <1 | 14 h 20 min |
| July | 94°F | 72°F | 83.1°F | 2.96 | 0.0 | 6 | 26 | <1 | 14 h 10 min |
| August | 95°F | 71°F | 82.7°F | 2.42 | 0.0 | 6 | 25 | <1 | 13 h 20 min |
| September | 89°F | 64°F | 76.2°F | 3.77 | 0.0 | 6 | 14 | <1 | 12 h 30 min |
| October | 79°F | 52°F | 65.1°F | 4.47 | 0.0 | 7 | 3 | 1 | 11 h 30 min |
| November | 67°F | 42°F | 54.5°F | 3.61 | 0.0 | 8 | <1 | 8 | 10 h 30 min |
| December | 59°F | 35°F | 47.2°F | 4.42 | 0.0 | 9 | <1 | 15 | 10 h |
| Year (annual) | 77°F | 53°F | 64.7°F | 49.74 | 1.3 | 89 | 89 | 55 |
The same normals in °C and millimetres
| Month | High | Low | Mean | Precip. | Snow |
|---|---|---|---|---|---|
| January | 14°C | 1°C | 7.5°C | 104 mm | 1 cm |
| February | 16°C | 3°C | 9.5°C | 107 mm | 2 cm |
| March | 21°C | 7°C | 13.8°C | 123 mm | 0 cm |
| April | 25°C | 11°C | 17.8°C | 120 mm | 0 cm |
| May | 29°C | 16°C | 22.4°C | 130 mm | 0 cm |
| June | 33°C | 21°C | 26.6°C | 130 mm | 0 cm |
| July | 34°C | 22°C | 28.4°C | 75 mm | 0 cm |
| August | 35°C | 22°C | 28.2°C | 61 mm | 0 cm |
| September | 32°C | 18°C | 24.6°C | 96 mm | 0 cm |
| October | 26°C | 11°C | 18.4°C | 114 mm | 0 cm |
| November | 19°C | 6°C | 12.5°C | 92 mm | 0 cm |
| December | 15°C | 2°C | 8.4°C | 112 mm | 0 cm |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00414577; annual normals. Wet days: 0.01 inch or more; 90°F days and freezing nights: NOAA's day counts. Daylight: sunrise to sunset on the 15th, computed from the latitude.
When is the best weather to visit Jefferson?
Normal highs sit between 65°F and 85°F in March, April, May, October and November. Of those, October has the fewest days with rain (7).
That is a measurement, not a recommendation: it counts the months whose normal afternoon high sits between 65°F and 85°F, where a light layer is enough by day.
Source: NOAA NCEI 1991-2020 monthly normals, station USC00414577.
When is the last frost in Jefferson?
In Jefferson, the last spring frost (32°F) comes after March 18 in half of years and after April 7 in one year in ten; the first autumn frost comes before November 8 in half of years and before October 26 in one year in ten.
Frost-free in half of yearsFrost in 1 to 9 years out of 10Frost most years
- Last spring frost, half of years after
- March 181 year in 10 after April 7; 9 in 10 after February 28
- First autumn frost, half of years before
- November 81 year in 10 before October 26; 9 in 10 before November 30
NOAA puts the median frost-free season at 236 days, and the season without a hard freeze (28°F) at 265 days.
A hard freeze (28°F) comes after March 3 in half of springs and before November 22 in half of autumns.
The USDA's 2023 Plant Hardiness Zone Map puts Jefferson in zone 8b in ZIP code 75657, the nearest ZIP area.
Frost dates for every NOAA station in Texas · Frost dates by ZIP code
Source: NOAA NCEI 1991-2020 annual normals (frost probabilities), station USC00414577; USDA 2023 Plant Hardiness Zone Map, ZIP listings: PRISM Group, Oregon State University, https://prism.oregonstate.edu, accessed October 8, 2026. A 10% date means one year in ten has a frost after it in spring or before it in autumn.
How hot and how cold does it get in Jefferson?
In a normal year in Jefferson, 89 days a year reach 90°F (12 of them 100°F or more), 55 nights fall to 32°F or colder and 89 days bring measurable precipitation.
- Days at 90°F or more
- 89a normal year
- Days at 100°F or more
- 12a normal year
- Nights at 32°F or colder
- 55a normal year
- Days that stay below freezing
- 1high of 32°F or less
- Days with 0.01 inch of precipitation
- 89a normal year
- Days with 1 inch of snow or more
- 1a normal year
Source: NOAA NCEI 1991-2020 annual normals, station USC00414577.
How sunny is Jefferson?
Over a year 78% of the sunlight that would reach the ground under clear skies gets through the clouds in the area around Jefferson, 4.6 kWh per square metre a day. August is the sunniest month (85%) and February the cloudiest (65%).
| Month | Share of clear-sky sunshine | Sunshine, kWh/m² a day |
|---|---|---|
| January | 71% | 2.8 |
| February | 65% | 3.1 |
| March | 71% | 4.3 |
| April | 76% | 5.4 |
| May | 77% | 5.9 |
| June | 82% | 6.4 |
| July | 84% | 6.4 |
| August | 85% | 6.0 |
| September | 82% | 5.1 |
| October | 80% | 4.1 |
| November | 75% | 3.0 |
| December | 70% | 2.5 |
Source: NASA POWER solar climatology, 2001-2020 (CERES SYN1deg). Satellite-based, for the 1-degree cell (about 100 km across) around the station, so it describes the area rather than the airport.
How much heating and cooling does Jefferson need?
A normal year in Jefferson brings 2,470 heating degree days, 54% fewer than the median U.S. place (5,373), and 2,393 cooling degree days, 2.6 times the median (908). Four months need 300 or more heating degree days, a monthly mean of about 55°F or colder. For gardens and crops, NOAA counts 6,002 growing degree days a year above 50°F.
| Month | Heating | Cooling |
|---|---|---|
| January | 606 | 3 |
| February | 448 | 4 |
| March | 283 | 27 |
| April | 111 | 83 |
| May | 16 | 242 |
| June | 0 | 448 |
| July | 0 | 561 |
| August | 0 | 547 |
| September | 8 | 343 |
| October | 105 | 108 |
| November | 335 | 21 |
| December | 558 | 5 |
| Year (annual) | 2,470 | 2,393 |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00414577. A degree day is one degree of a day's mean temperature below 65°F (heating) or above it (cooling); utilities use them to estimate energy use.
Has Jefferson been warmer than normal lately?
2024 averaged 65.8°F, 1.1°F above the 1991-2020 normal of 64.7°F. 2 of the 3 complete years since 2021 ran warmer than the normal.
| Year | Mean | Against normal | Precip. | Snow |
|---|---|---|---|---|
| 2021 | 64.3°F | −0.4°F | 54.60 | – |
| 2023 | 65.9°F | +1.2°F | 47.87 | – |
| 2024 | 65.8°F | +1.1°F | 67.67 | – |
Source: observed years: ACIS, station USC00414577. A year counts only with all twelve months complete.
How does Jefferson's climate compare?
Jefferson is warmer than 116 of the other 320 places with their own NOAA record in Texas, and wetter than 278. Across the 7,247 U.S. stations with normals, its annual mean of 64.7°F is warmer than 87%.
In the Köppen classification computed from these normals, Jefferson is Cfa: temperate, no dry season, hot summer. What the classes mean.
Places with the most similar year elsewhere
Measured month by month on the normal high, low and precipitation, among places of 20,000 or more people in other states:
Source: NOAA NCEI 1991-2020 normals for every station PlainClimate covers. Similarity: the root-mean-square difference of the 36 monthly figures, precipitation weighted so an inch counts like 6°F.
Which places near Jefferson share this climate record?
Pine Harbor has no NOAA station with 1991-2020 normals of its own, and this station is the nearest full record. A place's own climate can differ from these figures, by several degrees where it sits much higher or lower than the station, nearer the coast, or inside a large city's heat; for the larger places the next nearest records are named with their yearly mean, so the spread around them is visible, and places of 50,000 or more have their own page with NOAA's gridded normals.
- Pine Harbor, TX408 people · 8 mi W
Source: Census Bureau 2024 Gazetteer (place centers) and Vintage 2024 population estimates. Distance and direction from the station to each place's center.
Questions about Jefferson's climate
What is the coldest month in Jefferson?
January, with a normal high of 57°F and a normal low of 34°F. The warmest is July (94°F by day, 72°F at night).
Does it snow in Jefferson?
Yes: 1 inch in a normal year, falling on 1 days with 0.1 inch or more, the most in February (0.7 inches).
What is the rainiest month in Jefferson?
May, with 5.11 in of precipitation in a normal year; the driest is August with 2.42 in.
What plant hardiness zone is Jefferson in?
The USDA's 2023 map puts Jefferson in zone 8b in ZIP code 75657, the nearest ZIP area.
How late can frost come in Jefferson?
In half of years the last 32°F night comes after March 18; in one year in ten it comes after April 7. Waiting until April 7 leaves about a one-in-ten chance of a later frost.
Nearby and next
- Texas climateThe statewide normals and every place in the state
- Marshall, TX19 miles from this station, 64.3°F a year
- Daingerfield, TX24 miles from this station, 64.7°F a year
- Mooringsport, LA24 miles from this station, 65.3°F a year
- Diana (2 mi W), TX25 miles from this station, 65.2°F a year
- Compare two placesMonth by month, side by side
Download these normals (CSV) · JSON · How these figures are made