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Monthly climate in Grenfell, Australia

Last updated: July 31, 2025

Under the Köppen–Geiger climate classification Grenfell features a humid subtropical climate (Cfa). Temperatures typically range between 8 °C (46 °F) and 25 °C (78 °F) through the year, but rarely can drop to -5 °C (24 °F) or can rise to as high as 43 °C (111 °F). The average annual precipitation amounts to about 607 mm (23.9 inches) and receives 74 rainy days on the 1 mm (0.04 inches) threshold annually. Grenfell enjoys an average of 3376 hours of sunshine throughout the year, and daylight varies from 9 hours 55 minutes to 14 hours 21 minutes per day.

Monthly average temperatures in Grenfell, Australia

The warmest months in Grenfell are January, February and December, with daily mean temperatures ranging from 23 to 25 °C (73 - 78 °F) throughout the day. The coldest temperatures usually occur in June, July and August, when daily mean temperatures range from 8 to 8 °C (46 - 47 °F) throughout the day. On average each year, Grenfell experiences 129 days above 25 °C (77.0 °F) and 18 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Grenfell. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to June 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Maximum43°C
(111°F)		43°C
(110°F)		36°C
(97°F)		33°C
(92°F)		26°C
(79°F)		20°C
(69°F)		20°C
(69°F)		22°C
(72°F)		31°C
(87°F)		35°C
(95°F)		38°C
(100°F)		42°C
(108°F)
Mean maximum40°C
(104°F)		38°C
(100°F)		33°C
(92°F)		28°C
(82°F)		24°C
(75°F)		17°C
(63°F)		18°C
(64°F)		20°C
(69°F)		26°C
(80°F)		30°C
(86°F)		34°C
(93°F)		38°C
(101°F)
Average high33°C
(91°F)		30°C
(86°F)		27°C
(81°F)		23°C
(73°F)		17°C
(64°F)		14°C
(57°F)		13°C
(56°F)		14°C
(57°F)		18°C
(65°F)		23°C
(73°F)		26°C
(78°F)		30°C
(85°F)
Daily mean25°C
(78°F)		23°C
(74°F)		21°C
(69°F)		16°C
(61°F)		11°C
(52°F)		8°C
(47°F)		8°C
(46°F)		8°C
(47°F)		12°C
(53°F)		16°C
(61°F)		19°C
(66°F)		23°C
(73°F)
Average low19°C
(66°F)		16°C
(62°F)		15°C
(59°F)		10°C
(50°F)		6°C
(43°F)		4°C
(39°F)		3°C
(37°F)		2°C
(37°F)		5°C
(41°F)		9°C
(48°F)		12°C
(54°F)		15°C
(60°F)
Mean minimum13°C
(55°F)		10°C
(49°F)		8°C
(47°F)		4°C
(39°F)		-0°C
(32°F)		-1°C
(30°F)		-3°C
(27°F)		-3°C
(27°F)		-2°C
(29°F)		2°C
(36°F)		4°C
(40°F)		8°C
(47°F)
Minimum9°C
(49°F)		7°C
(46°F)		5°C
(41°F)		1°C
(34°F)		-3°C
(27°F)		-3°C
(27°F)		-5°C
(24°F)		-4°C
(25°F)		-3°C
(27°F)		1°C
(34°F)		0°C
(32°F)		6°C
(42°F)

Compare climate in Grenfell with other places

Compare temperature, precipitation, sunshine, UV index in Grenfell, Australia with other places around the world.

Monthly average precipitation in Grenfell, Australia

Grenfell usually has the most precipitation in March, October and November, with an average of 7 rainy days and 71 mm (2.8 inches) of precipitation per month. The driest months in Grenfell are January, April and September. On average, 35 mm (1.4 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Grenfell. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Average precipitation mm (inches)38 (1.5)44 (1.7)75 (2.9)27 (1.1)42 (1.7)53 (2.1)43 (1.7)51 (2.0)39 (1.6)58 (2.3)79 (3.1)57 (2.2)
Average precipitation days (≥ 1 mm)558257885876

Monthly sunshine hours in Grenfell, Australia

The sunniest months in Grenfell are October, November and December, when the sun shines an average of 10 hours 53 minutes a day. Least sunny months in Grenfell: June, July and August receive an average of 7 hours 20 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Grenfell. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Mean monthly sunshine hours295310299274243208223243273312319370
Mean daily daylight hours14h 6m13h 17m12h 15m11h 12m10h 20m9h 55m10h 7m10h 52m11h 52m12h 55m13h 51m14h 21m

Solar UV radiation in Grenfell, Australia

Grenfell experiences the highest level of ultraviolet (UV) radiation in January, February and December, when the maximum UV index can reach values of 14 - 15, which corresponds to the Extreme category of sun exposure. May, June and July are in the Moderate exposure category. In these months, the maximum values of the UV index do not exceed 5. For more detailed information, check out our hourly Grenfell UV Index data.

Average daily maximum UV levels by month for Grenfell. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2022 to January 2023.
 JanFebMarAprMayJunJulAugSepOctNovDec
UV Index (month maximum)151412853468101315