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Monthly climate in Sam Rayburn, Texas, United States

Last updated: May 6, 2024

Under the Köppen–Geiger climate classification Sam Rayburn features a humid subtropical climate (Cfa).Temperatures typically range between 11 °C (52 °F) and 28 °C (83 °F) through the year, but rarely can drop to -9 °C (16 °F) or can rise to as high as 39 °C (102 °F).The average annual precipitation amounts to about 1576 mm (62.0 inches) and receives 142 rainy days on the 1 mm (0.04 inches) threshold annually.Sam Rayburn enjoys an average of 3029 hours of sunshine throughout the year, and daylight varies from 10 hours 9 minutes to 14 hours 6 minutes per day.

Monthly average temperatures in Sam Rayburn, Texas, United States §

The warmest months in Sam Rayburn are June, July and August, with daily mean temperatures ranging from 27 to 28 °C (81 - 83 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from 11 to 13 °C (52 - 55 °F) throughout the day. On average each year, Sam Rayburn experiences 186 days above 25 °C (77.0 °F) and 5 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Sam Rayburn, Texas, United States.Generated using Copernicus Climate Change Service information.Data for period from January 2017 to June 2022.
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Maximum 28°C
(82°F)		 29°C
(84°F)		 31°C
(89°F)		 32°C
(90°F)		 36°C
(97°F)		 36°C
(98°F)		 39°C
(102°F)		 39°C
(102°F)		 39°C
(102°F)		 34°C
(93°F)		 30°C
(86°F)		 28°C
(83°F)
Mean maximum 24°C
(76°F)		 26°C
(79°F)		 29°C
(84°F)		 30°C
(87°F)		 34°C
(93°F)		 35°C
(95°F)		 37°C
(99°F)		 38°C
(100°F)		 36°C
(97°F)		 33°C
(92°F)		 28°C
(82°F)		 26°C
(79°F)
Average high 16°C
(61°F)		 18°C
(65°F)		 23°C
(73°F)		 25°C
(77°F)		 30°C
(86°F)		 32°C
(90°F)		 33°C
(92°F)		 34°C
(93°F)		 31°C
(89°F)		 27°C
(81°F)		 21°C
(70°F)		 18°C
(65°F)
Daily mean 11°C
(52°F)		 13°C
(55°F)		 17°C
(64°F)		 20°C
(68°F)		 24°C
(76°F)		 27°C
(81°F)		 28°C
(83°F)		 28°C
(83°F)		 26°C
(80°F)		 21°C
(71°F)		 15°C
(59°F)		 13°C
(55°F)
Average low 7°C
(44°F)		 9°C
(48°F)		 13°C
(55°F)		 15°C
(59°F)		 20°C
(68°F)		 23°C
(74°F)		 24°C
(76°F)		 24°C
(76°F)		 22°C
(72°F)		 17°C
(63°F)		 10°C
(51°F)		 9°C
(48°F)
Mean minimum -2°C
(28°F)		 -1°C
(31°F)		 3°C
(38°F)		 7°C
(44°F)		 14°C
(58°F)		 20°C
(69°F)		 22°C
(71°F)		 21°C
(71°F)		 17°C
(63°F)		 8°C
(46°F)		 3°C
(37°F)		 1°C
(34°F)
Minimum -8°C
(18°F)		 -9°C
(16°F)		 -2°C
(29°F)		 5°C
(41°F)		 11°C
(52°F)		 18°C
(65°F)		 19°C
(67°F)		 21°C
(69°F)		 14°C
(57°F)		 3°C
(38°F)		 -3°C
(28°F)		 -0°C
(32°F)

Compare climate in Sam Rayburn with other places

Compare temperature, precipitation, sunshine, UV index in Sam Rayburn, Texas, United States with other places around the world.

Monthly average precipitation in Sam Rayburn, Texas, United States §

Sam Rayburn usually has the most precipitation in May, August and September, with an average of 13 rainy days and 176 mm (6.9 inches) of precipitation per month.The driest months in Sam Rayburn are March, July and November. On average, 89 mm (3.5 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Sam Rayburn, Texas, United States.Generated using Copernicus Climate Change Service information.Data for period from January 2017 to January 2022.
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Average precipitation mm (inches) 107 (4.2) 114 (4.5) 101 (4.0) 132 (5.2) 184 (7.2) 150 (5.9) 98 (3.8) 183 (7.2) 160 (6.3) 144 (5.7) 68 (2.7) 133 (5.3)
Average precipitation days (≥ 1 mm) 8 12 11 10 13 16 16 16 12 10 8 10

Monthly sunshine hours in Sam Rayburn, Texas, United States §

The sunniest months in Sam Rayburn are June, July and August, when the sun shines an average of 10 hours 17 minutes a day.Least sunny months in Sam Rayburn: January, February and December receive an average of 5 hours 42 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Sam Rayburn, Texas, United States.Generated using Copernicus Atmosphere Monitoring Service information.Data for period from January 2017 to January 2022.
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Mean monthly sunshine hours 158 154 234 255 300 303 328 315 271 266 234 206
Mean daily daylight hours 10h 23m 11h 5m 12h 0m 12h 56m 13h 43m 14h 6m 13h 53m 13h 12m 12h 18m 11h 22m 10h 34m 10h 9m

Solar UV radiation in Sam Rayburn, Texas, United States §

Sam Rayburn experiences the highest level of ultraviolet (UV) radiation in June, July and August, when the maximum UV index can reach values of 11 - 12, which corresponds to the Extreme category of sun exposure.January, November and December are in the Moderate / High exposure category. In these months, the maximum values of the UV index do not exceed 6. For more detailed information, check out our hourly Sam Rayburn UV Index data.

Average daily maximum UV levels by month for Sam Rayburn, Texas, United States.Generated using Copernicus Atmosphere Monitoring Service information.Data for period from January 2022 to January 2023.
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
UV Index (month maximum) 5 8 9 10 11 12 12 11 10 8 6 4