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Monthly climate in Fairfax, Missouri, United States

Last updated: May 6, 2024

Under the Köppen–Geiger climate classification Fairfax features a humid continental climate (Dfa).Temperatures typically range between -2 °C (28 °F) and 26 °C (79 °F) through the year, but rarely can drop to -30 °C (-22 °F) or can rise to as high as 39 °C (103 °F).The average annual precipitation amounts to about 1034 mm (40.7 inches) and receives 98 rainy days on the 1 mm (0.04 inches) threshold annually.Fairfax enjoys an average of 3137 hours of sunshine throughout the year, and daylight varies from 9 hours 20 minutes to 14 hours 59 minutes per day.

Monthly average temperatures in Fairfax, Missouri, United States §

The warmest months in Fairfax are June, July and August, with daily mean temperatures ranging from 24 to 26 °C (76 - 79 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from -2 to 1 °C (28 - 35 °F) throughout the day. On average each year, Fairfax experiences 113 days above 25 °C (77.0 °F) and 103 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Fairfax, Missouri, 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 17°C
(62°F)		 24°C
(76°F)		 30°C
(86°F)		 32°C
(90°F)		 37°C
(100°F)		 39°C
(103°F)		 38°C
(100°F)		 36°C
(97°F)		 35°C
(95°F)		 33°C
(91°F)		 27°C
(81°F)		 23°C
(73°F)
Mean maximum 15°C
(59°F)		 20°C
(68°F)		 25°C
(77°F)		 30°C
(85°F)		 33°C
(91°F)		 35°C
(95°F)		 36°C
(98°F)		 34°C
(94°F)		 34°C
(94°F)		 31°C
(88°F)		 22°C
(72°F)		 18°C
(65°F)
Average high 3°C
(37°F)		 4°C
(40°F)		 12°C
(55°F)		 18°C
(64°F)		 24°C
(75°F)		 30°C
(87°F)		 31°C
(88°F)		 29°C
(85°F)		 27°C
(81°F)		 18°C
(65°F)		 11°C
(53°F)		 7°C
(45°F)
Daily mean -2°C
(28°F)		 -2°C
(29°F)		 7°C
(44°F)		 11°C
(53°F)		 18°C
(65°F)		 25°C
(77°F)		 26°C
(79°F)		 24°C
(76°F)		 22°C
(71°F)		 13°C
(55°F)		 6°C
(42°F)		 1°C
(35°F)
Average low -7°C
(20°F)		 -7°C
(20°F)		 1°C
(35°F)		 5°C
(42°F)		 13°C
(56°F)		 19°C
(67°F)		 21°C
(70°F)		 19°C
(67°F)		 16°C
(61°F)		 7°C
(46°F)		 0°C
(32°F)		 -4°C
(26°F)
Mean minimum -21°C
(-6°F)		 -19°C
(-2°F)		 -10°C
(14°F)		 -5°C
(23°F)		 5°C
(41°F)		 13°C
(56°F)		 16°C
(61°F)		 13°C
(55°F)		 8°C
(47°F)		 -2°C
(28°F)		 -10°C
(14°F)		 -14°C
(7°F)
Minimum -28°C
(-19°F)		 -30°C
(-22°F)		 -21°C
(-5°F)		 -9°C
(16°F)		 2°C
(37°F)		 10°C
(50°F)		 14°C
(57°F)		 11°C
(52°F)		 6°C
(43°F)		 -5°C
(23°F)		 -15°C
(6°F)		 -22°C
(-7°F)

Compare climate in Fairfax with other places

Compare temperature, precipitation, sunshine, UV index in Fairfax, Missouri, United States with other places around the world.

Monthly average precipitation in Fairfax, Missouri, United States §

Fairfax usually has the most precipitation in May, August and October, with an average of 11 rainy days and 135 mm (5.3 inches) of precipitation per month.The driest months in Fairfax are January, February and December. On average, 33 mm (1.3 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Fairfax, Missouri, 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) 36 (1.4) 32 (1.2) 92 (3.6) 84 (3.3) 157 (6.2) 119 (4.7) 112 (4.4) 120 (4.7) 85 (3.3) 129 (5.1) 37 (1.5) 32 (1.3)
Average precipitation days (≥ 1 mm) 5 6 10 10 14 9 8 10 8 10 5 3

Monthly sunshine hours in Fairfax, Missouri, United States §

The sunniest months in Fairfax are June, July and August, when the sun shines an average of 11 hours 26 minutes a day.Least sunny months in Fairfax: January, February and March receive an average of 6 hours 22 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Fairfax, Missouri, 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 156 208 215 268 272 350 372 328 284 239 215 224
Mean daily daylight hours 9h 39m 10h 40m 11h 58m 13h 18m 14h 25m 14h 59m 14h 41m 13h 40m 12h 24m 11h 4m 9h 55m 9h 20m

Solar UV radiation in Fairfax, Missouri, United States §

Fairfax experiences the highest level of ultraviolet (UV) radiation in May, June and July, when the maximum UV index can reach values of 10 - 11, which corresponds to the Very High / Extreme category of sun exposure.January, November and December are in the Moderate exposure category. In these months, the maximum values of the UV index do not exceed 4. For more detailed information, check out our hourly Fairfax UV Index data.

Average daily maximum UV levels by month for Fairfax, Missouri, 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) 3 5 6 9 10 11 10 9 8 6 4 3