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Monthly climate in Castronno, Italy

Last updated: July 31, 2025

Under the Köppen–Geiger climate classification Castronno features a oceanic climate (Cfb). Temperatures typically range between 4 °C (40 °F) and 24 °C (75 °F) through the year, but rarely can drop to -6 °C (22 °F) or can rise to as high as 37 °C (98 °F). The average annual precipitation amounts to about 1456 mm (57.3 inches) and receives 123 rainy days on the 1 mm (0.04 inches) threshold annually. Castronno enjoys an average of 3743 hours of sunshine throughout the year, and daylight varies from 8 hours 43 minutes to 15 hours 38 minutes per day.

Monthly average temperatures in Castronno, Italy

The warmest months in Castronno are June, July and August, with daily mean temperatures ranging from 22 to 24 °C (72 - 75 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from 4 to 7 °C (40 - 44 °F) throughout the day. On average each year, Castronno experiences 80 days above 25 °C (77.0 °F) and 19 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Castronno. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to June 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Maximum17°C
(62°F)		21°C
(69°F)		23°C
(74°F)		26°C
(80°F)		32°C
(90°F)		37°C
(98°F)		34°C
(94°F)		35°C
(95°F)		29°C
(85°F)		27°C
(82°F)		18°C
(65°F)		15°C
(60°F)
Mean maximum13°C
(56°F)		17°C
(63°F)		21°C
(70°F)		25°C
(77°F)		27°C
(81°F)		31°C
(88°F)		33°C
(91°F)		33°C
(92°F)		28°C
(83°F)		24°C
(75°F)		17°C
(62°F)		13°C
(56°F)
Average high8°C
(47°F)		11°C
(52°F)		14°C
(57°F)		18°C
(64°F)		22°C
(71°F)		27°C
(81°F)		28°C
(83°F)		28°C
(83°F)		23°C
(74°F)		18°C
(65°F)		12°C
(54°F)		8°C
(47°F)
Daily mean4°C
(40°F)		7°C
(44°F)		9°C
(49°F)		13°C
(56°F)		17°C
(63°F)		22°C
(72°F)		24°C
(75°F)		24°C
(75°F)		19°C
(67°F)		14°C
(58°F)		9°C
(49°F)		5°C
(41°F)
Average low1°C
(34°F)		3°C
(37°F)		5°C
(41°F)		9°C
(48°F)		13°C
(56°F)		18°C
(65°F)		20°C
(68°F)		20°C
(68°F)		16°C
(61°F)		11°C
(53°F)		7°C
(45°F)		2°C
(36°F)
Mean minimum-2°C
(28°F)		-2°C
(29°F)		-0°C
(32°F)		3°C
(37°F)		8°C
(47°F)		14°C
(58°F)		16°C
(61°F)		15°C
(60°F)		10°C
(51°F)		8°C
(46°F)		2°C
(35°F)		-1°C
(30°F)
Minimum-5°C
(23°F)		-6°C
(22°F)		-5°C
(23°F)		0°C
(33°F)		4°C
(40°F)		12°C
(54°F)		14°C
(58°F)		14°C
(57°F)		8°C
(46°F)		6°C
(42°F)		0°C
(33°F)		-3°C
(28°F)

Compare climate in Castronno with other places

Compare temperature, precipitation, sunshine, UV index in Castronno, Italy with other places around the world.

Monthly average precipitation in Castronno, Italy

Castronno usually has the most precipitation in June, October and November, with an average of 11 rainy days and 183 mm (7.2 inches) of precipitation per month. The driest months in Castronno are January, February and March. On average, 63 mm (2.5 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Castronno. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Average precipitation mm (inches)51 (2.0)46 (1.8)93 (3.7)127 (5.0)140 (5.5)155 (6.1)127 (5.0)108 (4.3)122 (4.8)214 (8.4)180 (7.1)94 (3.7)
Average precipitation days (≥ 1 mm)789101611129119138

Monthly sunshine hours in Castronno, Italy

The sunniest months in Castronno are June, July and August, when the sun shines an average of 13 hours 22 minutes a day. Least sunny months in Castronno: January, November and December receive an average of 6 hours 40 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Castronno. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Mean monthly sunshine hours188232308342389412427391335289211215
Mean daily daylight hours9h 6m10h 21m11h 56m13h 33m14h 56m15h 38m15h 16m14h 2m12h 29m10h 52m9h 27m8h 43m

Solar UV radiation in Castronno, Italy

Castronno experiences the highest level of ultraviolet (UV) radiation in June, July and August, when the maximum UV index can reach values of 8 - 9, 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 3. For more detailed information, check out our hourly Castronno UV Index data.

Average daily maximum UV levels by month for Castronno. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2022 to January 2023.
 JanFebMarAprMayJunJulAugSepOctNovDec
UV Index (month maximum)235689986532