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Monthly climate in Rock Island, Florida, United States

Last updated: May 6, 2024

Under the Köppen–Geiger climate classification Rock Island features a tropical monsoon climate (Am).Temperatures typically range between 20 °C (69 °F) and 29 °C (84 °F) through the year, but rarely can drop to 4 °C (39 °F) or can rise to as high as 36 °C (96 °F).The average annual precipitation amounts to about 1522 mm (59.9 inches) and receives 188 rainy days on the 1 mm (0.04 inches) threshold annually.Rock Island enjoys an average of 3575 hours of sunshine throughout the year, and daylight varies from 10 hours 30 minutes to 13 hours 44 minutes per day.

Monthly average temperatures in Rock Island, Florida, United States §

The warmest months in Rock Island are July, August and September, with daily mean temperatures ranging from 28 to 29 °C (83 - 84 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from 20 to 23 °C (69 - 73 °F) throughout the day. On average each year, Rock Island experiences 289 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 Rock Island, 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 31°C
(88°F)		 31°C
(87°F)		 33°C
(91°F)		 36°C
(96°F)		 34°C
(93°F)		 35°C
(95°F)		 35°C
(96°F)		 34°C
(94°F)		 35°C
(95°F)		 33°C
(91°F)		 31°C
(89°F)		 31°C
(88°F)
Mean maximum 29°C
(85°F)		 30°C
(86°F)		 31°C
(89°F)		 33°C
(91°F)		 32°C
(90°F)		 33°C
(92°F)		 34°C
(94°F)		 34°C
(93°F)		 34°C
(93°F)		 32°C
(90°F)		 30°C
(86°F)		 29°C
(85°F)
Average high 24°C
(76°F)		 27°C
(80°F)		 27°C
(81°F)		 29°C
(85°F)		 30°C
(86°F)		 31°C
(88°F)		 32°C
(90°F)		 32°C
(90°F)		 32°C
(89°F)		 30°C
(86°F)		 27°C
(81°F)		 26°C
(78°F)
Daily mean 20°C
(69°F)		 23°C
(73°F)		 23°C
(73°F)		 25°C
(77°F)		 26°C
(80°F)		 28°C
(82°F)		 28°C
(83°F)		 29°C
(84°F)		 28°C
(83°F)		 27°C
(81°F)		 24°C
(75°F)		 21°C
(71°F)
Average low 16°C
(61°F)		 19°C
(66°F)		 19°C
(66°F)		 22°C
(71°F)		 23°C
(74°F)		 25°C
(77°F)		 26°C
(78°F)		 26°C
(79°F)		 25°C
(78°F)		 24°C
(76°F)		 21°C
(69°F)		 17°C
(64°F)
Mean minimum 6°C
(43°F)		 10°C
(50°F)		 11°C
(51°F)		 14°C
(58°F)		 19°C
(67°F)		 23°C
(73°F)		 24°C
(75°F)		 24°C
(75°F)		 23°C
(74°F)		 19°C
(67°F)		 14°C
(57°F)		 9°C
(48°F)
Minimum 4°C
(39°F)		 6°C
(43°F)		 9°C
(48°F)		 12°C
(55°F)		 17°C
(62°F)		 22°C
(72°F)		 23°C
(74°F)		 23°C
(74°F)		 22°C
(72°F)		 12°C
(53°F)		 8°C
(47°F)		 7°C
(44°F)

Compare climate in Rock Island with other places

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

Monthly average precipitation in Rock Island, Florida, United States §

Rock Island usually has the most precipitation in June, July and August, with an average of 26 rainy days and 231 mm (9.1 inches) of precipitation per month.The driest months in Rock Island are January, March and December. On average, 31 mm (1.2 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Rock Island, 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) 30 (1.2) 49 (1.9) 28 (1.1) 78 (3.1) 163 (6.4) 237 (9.3) 228 (9.0) 227 (8.9) 224 (8.8) 146 (5.8) 74 (2.9) 36 (1.4)
Average precipitation days (≥ 1 mm) 5 8 5 10 18 24 28 27 23 20 12 8

Monthly sunshine hours in Rock Island, Florida, United States §

The sunniest months in Rock Island are April, July and August, when the sun shines an average of 10 hours 47 minutes a day.Least sunny months in Rock Island: January, February and November receive an average of 8 hours 28 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Rock Island, 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 216 274 319 326 314 295 333 333 309 297 271 283
Mean daily daylight hours 10h 41m 11h 16m 12h 1m 12h 47m 13h 26m 13h 44m 13h 34m 13h 0m 12h 16m 11h 30m 10h 50m 10h 30m

Solar UV radiation in Rock Island, Florida, United States §

Rock Island experiences the highest level of ultraviolet (UV) radiation in April, May and August, when the maximum UV index can reach values of 12 - 12, which corresponds to the Extreme category of sun exposure.January, November and December are in the 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 Rock Island UV Index data.

Average daily maximum UV levels by month for Rock Island, 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 9 10 12 12 12 12 12 11 10 7 6