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Monthly climate in Griffith, Indiana, United States

Last updated: May 6, 2024

Under the Köppen–Geiger climate classification Griffith features a humid continental climate (Dfa).Temperatures typically range between -3 °C (27 °F) and 24 °C (75 °F) through the year, but rarely can drop to -30 °C (-21 °F) or can rise to as high as 34 °C (94 °F).The average annual precipitation amounts to about 1192 mm (46.9 inches) and receives 135 rainy days on the 1 mm (0.04 inches) threshold annually.Griffith enjoys an average of 2979 hours of sunshine throughout the year, and daylight varies from 9 hours 13 minutes to 15 hours 6 minutes per day.

Monthly average temperatures in Griffith, Indiana, United States §

The warmest months in Griffith are June, July and August, with daily mean temperatures ranging from 22 to 24 °C (71 - 75 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from -3 to 1 °C (27 - 34 °F) throughout the day. On average each year, Griffith experiences 80 days above 25 °C (77.0 °F) and 100 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Griffith, Indiana, 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 16°C
(60°F)		 19°C
(67°F)		 25°C
(76°F)		 28°C
(82°F)		 33°C
(91°F)		 34°C
(93°F)		 34°C
(93°F)		 34°C
(94°F)		 33°C
(92°F)		 30°C
(86°F)		 24°C
(75°F)		 18°C
(64°F)
Mean maximum 11°C
(52°F)		 14°C
(58°F)		 20°C
(68°F)		 25°C
(78°F)		 30°C
(86°F)		 32°C
(90°F)		 32°C
(91°F)		 33°C
(91°F)		 31°C
(89°F)		 28°C
(83°F)		 18°C
(64°F)		 15°C
(60°F)
Average high 0°C
(33°F)		 2°C
(36°F)		 8°C
(48°F)		 13°C
(57°F)		 20°C
(68°F)		 26°C
(79°F)		 28°C
(82°F)		 27°C
(81°F)		 25°C
(77°F)		 17°C
(63°F)		 8°C
(47°F)		 5°C
(41°F)
Daily mean -3°C
(27°F)		 -2°C
(29°F)		 4°C
(39°F)		 9°C
(48°F)		 16°C
(60°F)		 22°C
(71°F)		 24°C
(75°F)		 23°C
(73°F)		 20°C
(68°F)		 13°C
(56°F)		 5°C
(40°F)		 1°C
(34°F)
Average low -6°C
(22°F)		 -6°C
(22°F)		 0°C
(32°F)		 4°C
(40°F)		 11°C
(53°F)		 17°C
(63°F)		 20°C
(68°F)		 18°C
(66°F)		 16°C
(60°F)		 9°C
(48°F)		 1°C
(34°F)		 -2°C
(28°F)
Mean minimum -20°C
(-4°F)		 -19°C
(-1°F)		 -9°C
(15°F)		 -3°C
(27°F)		 3°C
(37°F)		 13°C
(55°F)		 15°C
(59°F)		 13°C
(55°F)		 8°C
(47°F)		 1°C
(34°F)		 -7°C
(20°F)		 -12°C
(11°F)
Minimum -30°C
(-21°F)		 -30°C
(-21°F)		 -18°C
(-0°F)		 -6°C
(21°F)		 -2°C
(29°F)		 10°C
(51°F)		 13°C
(57°F)		 11°C
(53°F)		 5°C
(42°F)		 -1°C
(31°F)		 -11°C
(12°F)		 -19°C
(-1°F)

Compare climate in Griffith with other places

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

Monthly average precipitation in Griffith, Indiana, United States §

Griffith usually has the most precipitation in May, June and October, with an average of 14 rainy days and 144 mm (5.7 inches) of precipitation per month.The driest months in Griffith are January, November and December. On average, 66 mm (2.6 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Griffith, Indiana, 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) 70 (2.7) 71 (2.8) 99 (3.9) 119 (4.7) 162 (6.4) 130 (5.1) 103 (4.1) 92 (3.6) 74 (2.9) 142 (5.6) 68 (2.7) 60 (2.4)
Average precipitation days (≥ 1 mm) 9 11 13 13 16 12 11 11 8 14 8 9

Monthly sunshine hours in Griffith, Indiana, United States §

The sunniest months in Griffith are June, July and August, when the sun shines an average of 11 hours 14 minutes a day.Least sunny months in Griffith: January, February and December receive an average of 5 hours 8 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Griffith, Indiana, 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 115 175 232 251 289 332 361 339 287 228 189 176
Mean daily daylight hours 9h 33m 10h 37m 11h 58m 13h 21m 14h 31m 15h 6m 14h 47m 13h 44m 12h 25m 11h 2m 9h 50m 9h 13m

Solar UV radiation in Griffith, Indiana, United States §

Griffith experiences the highest level of ultraviolet (UV) radiation in June, July and August, when the maximum UV index can reach values of 9 - 10, which corresponds to the Very High category of sun exposure.January, February and December are in the Low / 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 Griffith UV Index data.

Average daily maximum UV levels by month for Griffith, Indiana, 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 4 6 8 9 10 10 9 8 6 4 2