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Monthly climate in Keystone, Florida, United States

Last updated: May 6, 2024

Under the Köppen–Geiger climate classification Keystone features a humid subtropical climate (Cfa).Temperatures typically range between 16 °C (61 °F) and 28 °C (82 °F) through the year, but rarely can drop to -3 °C (26 °F) or can rise to as high as 37 °C (98 °F).The average annual precipitation amounts to about 1297 mm (51.1 inches) and receives 146 rainy days on the 1 mm (0.04 inches) threshold annually.Keystone enjoys an average of 3509 hours of sunshine throughout the year, and daylight varies from 10 hours 22 minutes to 13 hours 53 minutes per day.

Monthly average temperatures in Keystone, Florida, United States §

The warmest months in Keystone are July, August and September, with daily mean temperatures ranging from 27 to 28 °C (81 - 82 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from 16 to 19 °C (61 - 66 °F) throughout the day. On average each year, Keystone experiences 246 days above 25 °C (77.0 °F) and 0 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Keystone, Florida, 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 29°C
(84°F)		 30°C
(86°F)		 32°C
(90°F)		 34°C
(94°F)		 36°C
(98°F)		 37°C
(98°F)		 35°C
(96°F)		 35°C
(96°F)		 35°C
(95°F)		 34°C
(93°F)		 30°C
(87°F)		 28°C
(83°F)
Mean maximum 28°C
(83°F)		 29°C
(85°F)		 30°C
(86°F)		 32°C
(90°F)		 34°C
(94°F)		 34°C
(94°F)		 34°C
(93°F)		 35°C
(95°F)		 34°C
(93°F)		 33°C
(91°F)		 29°C
(85°F)		 27°C
(82°F)
Average high 21°C
(70°F)		 24°C
(76°F)		 25°C
(78°F)		 28°C
(82°F)		 30°C
(87°F)		 31°C
(88°F)		 32°C
(89°F)		 32°C
(90°F)		 32°C
(89°F)		 30°C
(86°F)		 25°C
(78°F)		 23°C
(73°F)
Daily mean 16°C
(61°F)		 19°C
(66°F)		 20°C
(68°F)		 23°C
(73°F)		 25°C
(78°F)		 27°C
(81°F)		 28°C
(82°F)		 28°C
(82°F)		 27°C
(81°F)		 25°C
(78°F)		 20°C
(68°F)		 17°C
(64°F)
Average low 11°C
(52°F)		 14°C
(57°F)		 14°C
(58°F)		 18°C
(64°F)		 21°C
(69°F)		 24°C
(75°F)		 24°C
(76°F)		 25°C
(77°F)		 24°C
(75°F)		 21°C
(71°F)		 16°C
(60°F)		 13°C
(55°F)
Mean minimum 1°C
(33°F)		 3°C
(38°F)		 4°C
(40°F)		 10°C
(50°F)		 16°C
(60°F)		 21°C
(71°F)		 22°C
(73°F)		 23°C
(74°F)		 21°C
(70°F)		 14°C
(58°F)		 8°C
(46°F)		 4°C
(39°F)
Minimum -3°C
(26°F)		 1°C
(33°F)		 3°C
(37°F)		 7°C
(45°F)		 13°C
(55°F)		 21°C
(69°F)		 22°C
(72°F)		 22°C
(73°F)		 19°C
(67°F)		 8°C
(46°F)		 5°C
(41°F)		 1°C
(35°F)

Compare climate in Keystone with other places

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

Monthly average precipitation in Keystone, Florida, United States §

Keystone usually has the most precipitation in June, July and August, with an average of 24 rainy days and 212 mm (8.3 inches) of precipitation per month.The driest months in Keystone are January, March and November. On average, 37 mm (1.4 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Keystone, Florida, 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) 44 (1.7) 66 (2.6) 20 (0.8) 71 (2.8) 108 (4.3) 183 (7.2) 233 (9.2) 219 (8.6) 157 (6.2) 76 (3.0) 45 (1.8) 75 (3.0)
Average precipitation days (≥ 1 mm) 4 6 3 8 10 21 26 26 19 10 6 7

Monthly sunshine hours in Keystone, Florida, United States §

The sunniest months in Keystone are May, July and August, when the sun shines an average of 10 hours 23 minutes a day.Least sunny months in Keystone: January, February and December receive an average of 8 hours 4 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Keystone, Florida, 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 216 257 313 314 332 300 318 315 309 297 272 261
Mean daily daylight hours 10h 34m 11h 11m 12h 0m 12h 50m 13h 32m 13h 53m 13h 42m 13h 5m 12h 17m 11h 27m 10h 43m 10h 22m

Solar UV radiation in Keystone, Florida, United States §

Keystone experiences the highest level of ultraviolet (UV) radiation in April, June and July, 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 7. For more detailed information, check out our hourly Keystone UV Index data.

Average daily maximum UV levels by month for Keystone, Florida, 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) 6 8 9 11 11 12 12 11 11 9 7 5