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Monthly climate in Keyi, China

Last updated: July 31, 2025

Under the Köppen–Geiger climate classification Keyi features a cold desert climate (BWk). Temperatures typically range between -12 °C (10 °F) and 18 °C (65 °F) through the year, but rarely can drop to -30 °C (-21 °F) or can rise to as high as 31 °C (88 °F). The average annual precipitation amounts to about 238 mm (9.4 inches) and receives 51 rainy days on the 1 mm (0.04 inches) threshold annually. Keyi enjoys an average of 3871 hours of sunshine throughout the year, and daylight varies from 9 hours 8 minutes to 15 hours 11 minutes per day.

Monthly average temperatures in Keyi, China

The warmest months in Keyi are June, July and August, with daily mean temperatures ranging from 15 to 18 °C (60 - 65 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from -12 to -9 °C (10 - 17 °F) throughout the day. On average each year, Keyi experiences 14 days above 25 °C (77.0 °F) and 173 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Keyi. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to June 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Maximum2°C
(36°F)		9°C
(48°F)		15°C
(60°F)		23°C
(74°F)		25°C
(77°F)		26°C
(80°F)		31°C
(88°F)		27°C
(82°F)		25°C
(78°F)		20°C
(69°F)		14°C
(57°F)		3°C
(37°F)
Mean maximum-1°C
(31°F)		4°C
(40°F)		13°C
(55°F)		21°C
(69°F)		24°C
(75°F)		25°C
(76°F)		28°C
(83°F)		27°C
(81°F)		22°C
(73°F)		17°C
(63°F)		9°C
(49°F)		0°C
(33°F)
Average high-6°C
(22°F)		-2°C
(29°F)		5°C
(42°F)		12°C
(55°F)		18°C
(65°F)		20°C
(69°F)		23°C
(74°F)		22°C
(71°F)		18°C
(65°F)		9°C
(49°F)		2°C
(36°F)		-4°C
(25°F)
Daily mean-12°C
(10°F)		-9°C
(17°F)		-1°C
(31°F)		7°C
(45°F)		13°C
(55°F)		15°C
(60°F)		18°C
(65°F)		16°C
(62°F)		12°C
(54°F)		3°C
(37°F)		-5°C
(24°F)		-10°C
(14°F)
Average low-18°C
(-1°F)		-15°C
(4°F)		-7°C
(19°F)		0°C
(33°F)		6°C
(43°F)		9°C
(49°F)		12°C
(53°F)		10°C
(51°F)		5°C
(42°F)		-3°C
(26°F)		-10°C
(14°F)		-15°C
(5°F)
Mean minimum-24°C
(-12°F)		-21°C
(-6°F)		-15°C
(5°F)		-7°C
(20°F)		0°C
(33°F)		5°C
(42°F)		7°C
(45°F)		5°C
(41°F)		-0°C
(32°F)		-9°C
(16°F)		-17°C
(2°F)		-20°C
(-3°F)
Minimum-30°C
(-21°F)		-26°C
(-14°F)		-20°C
(-3°F)		-12°C
(11°F)		-2°C
(28°F)		3°C
(38°F)		3°C
(38°F)		3°C
(38°F)		-2°C
(29°F)		-14°C
(7°F)		-23°C
(-9°F)		-24°C
(-11°F)

Compare climate in Keyi with other places

Compare temperature, precipitation, sunshine, UV index in Keyi, China with other places around the world.

Monthly average precipitation in Keyi, China

Keyi usually has the most precipitation in April, June and August, with an average of 7 rainy days and 38 mm (1.5 inches) of precipitation per month. The driest months in Keyi are January, November and December. On average, 5 mm (0.2 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Keyi. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Average precipitation mm (inches)5 (0.2)12 (0.5)12 (0.5)37 (1.5)20 (0.8)49 (1.9)23 (0.9)28 (1.1)21 (0.8)22 (0.9)7 (0.3)2 (0.1)
Average precipitation days (≥ 1 mm)133859565420

Monthly sunshine hours in Keyi, China

The sunniest months in Keyi are May, July and August, when the sun shines an average of 12 hours 34 minutes a day. Least sunny months in Keyi: January, November 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 Keyi. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Mean monthly sunshine hours212269327341381374404383339305269259
Mean daily daylight hours9h 28m10h 33m11h 56m13h 22m14h 34m15h 11m14h 52m13h 48m12h 26m11h 2m9h 47m9h 8m

Solar UV radiation in Keyi, China

Keyi experiences the highest level of ultraviolet (UV) radiation in May, July and August, when the maximum UV index can reach values of 11 - 11, which corresponds to the Extreme category of sun exposure. January, November 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 Keyi UV Index data.

Average daily maximum UV levels by month for Keyi. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2022 to January 2023.
 JanFebMarAprMayJunJulAugSepOctNovDec
UV Index (month maximum)35109111111118642