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Monthly climate in Harrisburg, Oregon, United States

Last updated: May 6, 2024

Under the Köppen–Geiger climate classification Harrisburg features a warm-summer Mediterranean climate (Csb).Temperatures typically range between 5 °C (41 °F) and 20 °C (69 °F) through the year, but rarely can drop to -11 °C (12 °F) or can rise to as high as 42 °C (109 °F).The average annual precipitation amounts to about 1236 mm (48.7 inches) and receives 125 rainy days on the 1 mm (0.04 inches) threshold annually.Harrisburg enjoys an average of 2766 hours of sunshine throughout the year, and daylight varies from 8 hours 53 minutes to 15 hours 27 minutes per day.

Monthly average temperatures in Harrisburg, Oregon, United States §

The warmest months in Harrisburg are July, August and September, with daily mean temperatures ranging from 17 to 20 °C (63 - 69 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from 5 to 5 °C (41 - 42 °F) throughout the day. On average each year, Harrisburg experiences 66 days above 25 °C (77.0 °F) and 42 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Harrisburg, Oregon, 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
(61°F)		 17°C
(63°F)		 23°C
(73°F)		 28°C
(82°F)		 30°C
(86°F)		 42°C
(109°F)		 36°C
(97°F)		 40°C
(105°F)		 36°C
(97°F)		 27°C
(81°F)		 21°C
(69°F)		 17°C
(64°F)
Mean maximum 14°C
(57°F)		 14°C
(58°F)		 19°C
(67°F)		 24°C
(76°F)		 28°C
(83°F)		 33°C
(91°F)		 35°C
(95°F)		 37°C
(99°F)		 33°C
(91°F)		 24°C
(75°F)		 18°C
(64°F)		 14°C
(58°F)
Average high 9°C
(48°F)		 9°C
(49°F)		 12°C
(54°F)		 15°C
(60°F)		 19°C
(67°F)		 23°C
(74°F)		 28°C
(83°F)		 29°C
(84°F)		 24°C
(76°F)		 17°C
(63°F)		 12°C
(54°F)		 8°C
(47°F)
Daily mean 5°C
(42°F)		 5°C
(41°F)		 7°C
(45°F)		 10°C
(50°F)		 13°C
(56°F)		 17°C
(62°F)		 20°C
(68°F)		 20°C
(69°F)		 17°C
(63°F)		 11°C
(53°F)		 8°C
(46°F)		 5°C
(41°F)
Average low 2°C
(36°F)		 2°C
(35°F)		 3°C
(37°F)		 5°C
(41°F)		 8°C
(46°F)		 11°C
(52°F)		 12°C
(55°F)		 13°C
(55°F)		 11°C
(52°F)		 6°C
(44°F)		 4°C
(39°F)		 2°C
(35°F)
Mean minimum -5°C
(24°F)		 -4°C
(25°F)		 -3°C
(26°F)		 -1°C
(31°F)		 2°C
(36°F)		 5°C
(42°F)		 9°C
(49°F)		 8°C
(47°F)		 5°C
(42°F)		 -0°C
(31°F)		 -3°C
(27°F)		 -5°C
(23°F)
Minimum -11°C
(12°F)		 -6°C
(21°F)		 -9°C
(15°F)		 -2°C
(29°F)		 1°C
(33°F)		 4°C
(40°F)		 7°C
(45°F)		 7°C
(44°F)		 4°C
(39°F)		 -3°C
(27°F)		 -5°C
(24°F)		 -7°C
(20°F)

Compare climate in Harrisburg with other places

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

Monthly average precipitation in Harrisburg, Oregon, United States §

Harrisburg usually has the most precipitation in January, February and December, with an average of 16 rainy days and 182 mm (7.2 inches) of precipitation per month.The driest months in Harrisburg are June, July and August. On average, 19 mm (0.7 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Harrisburg, Oregon, 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) 160 (6.3) 192 (7.5) 140 (5.5) 125 (4.9) 64 (2.5) 48 (1.9) 2 (0.1) 6 (0.2) 71 (2.8) 91 (3.6) 143 (5.6) 195 (7.7)
Average precipitation days (≥ 1 mm) 16 17 16 14 8 6 0 1 6 9 15 17

Monthly sunshine hours in Harrisburg, Oregon, United States §

The sunniest months in Harrisburg are June, July and August, when the sun shines an average of 11 hours 41 minutes a day.Least sunny months in Harrisburg: January, February and December receive an average of 3 hours 39 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Harrisburg, Oregon, 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 95 120 193 232 297 331 389 354 274 220 140 116
Mean daily daylight hours 9h 16m 10h 28m 11h 57m 13h 29m 14h 48m 15h 27m 15h 5m 13h 55m 12h 27m 10h 55m 9h 35m 8h 53m

Solar UV radiation in Harrisburg, Oregon, United States §

Harrisburg experiences the highest level of ultraviolet (UV) radiation in May, June and July, when the maximum UV index can reach values of 10 - 10, which corresponds to the Very High 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 3. For more detailed information, check out our hourly Harrisburg UV Index data.

Average daily maximum UV levels by month for Harrisburg, Oregon, 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) 2 4 6 7 10 10 10 9 8 5 3 2