Sam Rayburn, TX climate
Sam Rayburn has mild winters and hot summers, with plenty of rain. A typical July afternoon reaches 93°, a January night drops to 39°, and snow is almost unheard of.
NOAA 1991-2020 climate normals Updated once a decadeWhat a year in Sam Rayburn feels like
Winter
Spring
Summer
Fall
Sam Rayburn 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 | 60° | 39° | 5.2" | 0 | 8 | 0 | 43° – 57° |
| February | 64° | 42° | 4.4" | 0 | 7 | 0 | 44° – 63° |
| March | 72° | 48° | 4.7" | 0 | 7 | 0 | 53° – 69° |
| April | 78° | 55° | 4.4" | 0 | 6 | 0 | 61° – 71° |
| May | 85° | 63° | 4.8" | 0 | 7 | 0 | 70° – 77° |
| June | 90° | 69° | 4.9" | 0 | 8 | 0 | 77° – 84° |
| July | 93° | 72° | 3.8" | 0 | 6 | 0 | 79° – 87° |
| August | 94° | 71° | 4.1" | 0 | 6 | 0 | 77° – 88° |
| September | 89° | 66° | 4.2" | 0 | 6 | 0 | 74° – 82° |
| October | 80° | 55° | 5.1" | 0 | 5 | 0 | 63° – 73° |
| November | 70° | 46° | 4.8" | 0 | 6 | 0 | 53° – 63° |
| December | 62° | 40° | 5.5" | 0 | 7 | 0 | 44° – 57° |
| Year | 78° | 55° | 55.8" | 0.0" | 78 | 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 Sam Rayburn
Sam Rayburn gets 56 inches of rain and melted snow a year. December is the wettest month and July the driest. Rain or snow falls on about 78 days a year.
About 280 frost-free days a year
In half of years the last 32° night comes by February 24 and the first one by December 1. That leaves about 280 frost-free days for gardens, longer than 94% of U.S. towns.
Heating and cooling a home in Sam Rayburn
Engineers use “degree days” to estimate how hard a furnace or air conditioner works. In Sam Rayburn, 36% of that work is heating and 64% 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.
How Sam Rayburn 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 Sam Rayburn averaged 0.9° warmer than the 1900s. The biggest change is in February (+1.4°). The shift is smaller than in 78% of U.S. towns.
Change by month1991–2020 average minus 1901–2000 average, at Sam Rayburn’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 44° to 63°. June is the most reliable, staying within 7°.
Common questions about Sam Rayburn’s climate
What is the coldest month in Sam Rayburn?
January, with a typical high of 60° and a low of 39°.
What is the hottest month in Sam Rayburn?
August, with a typical high of 94° and a low of 71°. About 94 days a year reach 90°.
How much snow does Sam Rayburn get?
Almost none. A normal year brings 0.0 inches.
When is the first frost in Sam Rayburn?
In half of years the first 32° night comes by December 1, and the last spring frost by February 24.
What is the rainiest month in Sam Rayburn?
December, with 5.5 inches of rain and melted snow. The year totals 56 inches.
Temperatures and rainfall come from NOAA’s gridded climate normals for Sam Rayburn itself (about a 3-mile square). Snow, frost dates and day counts come from NOAA’s weather station at Pineland, TX (12 mi, snow) and Sam Rayburn Dam, TX (5 mi, frost, heat and degree days). Normals are 30-year averages, not a forecast. Source: NOAA NCEI U.S. Climate Normals, 1991–2020 and 1901–2000.