Last updated: March 2, 2024
Under the Köppen–Geiger climate classification Oskaloosa features a humid subtropical climate (Cfa). Temperatures typically range between -1 °C (31 °F) and 26 °C (80 °F) through the year, but rarely can drop to -27 °C (-16 °F) or can rise to as high as 37 °C (99 °F). The average annual precipitation amounts to about 1108 mm (43.6 inches) and receives 100 rainy days on the 1 mm (0.04 inches) threshold annually. Oskaloosa enjoys an average of 3115 hours of sunshine throughout the year, and daylight varies from 9 hours 26 minutes to 14 hours 52 minutes per day.
The warmest months in Oskaloosa are June, July and August, with daily mean temperatures ranging from 25 to 26 °C (77 - 80 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from -1 to 3 °C (31 - 37 °F) throughout the day. On average each year, Oskaloosa experiences 112 days above 25 °C (77.0 °F) and 90 days below 0 °C (32.0 °F).
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Maximum | 17°C (63°F) |
25°C (76°F) |
30°C (86°F) |
29°C (85°F) |
34°C (94°F) |
37°C (99°F) |
37°C (99°F) |
36°C (97°F) |
33°C (92°F) |
32°C (90°F) |
25°C (78°F) |
22°C (72°F) |
| Mean maximum | 16°C (60°F) |
20°C (68°F) |
25°C (77°F) |
28°C (83°F) |
32°C (89°F) |
34°C (93°F) |
36°C (97°F) |
35°C (94°F) |
33°C (92°F) |
31°C (87°F) |
21°C (71°F) |
19°C (66°F) |
| Average high | 4°C (40°F) |
5°C (42°F) |
13°C (56°F) |
18°C (64°F) |
23°C (74°F) |
30°C (86°F) |
31°C (88°F) |
30°C (85°F) |
27°C (81°F) |
19°C (66°F) |
12°C (54°F) |
8°C (47°F) |
| Daily mean | -1°C (31°F) |
-0°C (32°F) |
8°C (46°F) |
12°C (54°F) |
19°C (66°F) |
25°C (77°F) |
26°C (80°F) |
25°C (77°F) |
22°C (72°F) |
13°C (56°F) |
6°C (44°F) |
3°C (37°F) |
| Average low | -5°C (23°F) |
-5°C (23°F) |
3°C (37°F) |
6°C (44°F) |
14°C (57°F) |
20°C (68°F) |
22°C (71°F) |
20°C (68°F) |
17°C (63°F) |
9°C (48°F) |
1°C (35°F) |
-2°C (28°F) |
| Mean minimum | -17°C (2°F) |
-17°C (1°F) |
-9°C (16°F) |
-3°C (26°F) |
5°C (42°F) |
14°C (58°F) |
17°C (63°F) |
14°C (57°F) |
9°C (48°F) |
-1°C (30°F) |
-9°C (16°F) |
-12°C (11°F) |
| Minimum | -23°C (-9°F) |
-27°C (-16°F) |
-19°C (-2°F) |
-8°C (19°F) |
3°C (38°F) |
11°C (51°F) |
15°C (60°F) |
12°C (54°F) |
7°C (44°F) |
-3°C (27°F) |
-14°C (7°F) |
-19°C (-1°F) |
Compare temperature, precipitation, sunshine, UV index in Oskaloosa, Kansas, United States with other places around the world.
Oskaloosa usually has the most precipitation in May, June and August, with an average of 11 rainy days and 160 mm (6.3 inches) of precipitation per month. The driest months in Oskaloosa are February, November and December. On average, 35 mm (1.4 inches) of precipitation falls during these months.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Average precipitation mm (inches) | 45 (1.8) | 31 (1.2) | 100 (3.9) | 88 (3.5) | 218 (8.6) | 125 (4.9) | 91 (3.6) | 136 (5.3) | 85 (3.3) | 115 (4.5) | 41 (1.6) | 33 (1.3) |
| Average precipitation days (≥ 1 mm) | 5 | 5 | 11 | 10 | 14 | 9 | 9 | 11 | 8 | 10 | 5 | 3 |
The sunniest months in Oskaloosa are June, July and August, when the sun shines an average of 11 hours 12 minutes a day. Least sunny months in Oskaloosa: January, February and November receive an average of 6 hours 22 minutes of sunshine daily.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Mean monthly sunshine hours | 155 | 201 | 221 | 263 | 273 | 338 | 367 | 325 | 280 | 249 | 217 | 220 |
| Mean daily daylight hours | 9h 45m | 10h 43m | 11h 58m | 13h 15m | 14h 20m | 14h 52m | 14h 34m | 13h 37m | 12h 23m | 11h 7m | 10h 0m | 9h 26m |
Oskaloosa experiences the highest level of ultraviolet (UV) radiation in June, July and August, when the maximum UV index can reach values of 10 - 11, which corresponds to the Very High / Extreme category of sun exposure. January, November and December are in the 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 Oskaloosa UV Index data.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UV Index (month maximum) | 3 | 5 | 6 | 9 | 10 | 11 | 11 | 10 | 9 | 6 | 4 | 3 |
Discover in-depth weather details for every month in Oskaloosa. Click through the links below for comprehensive overviews of temperature trends, precipitation levels, sunshine hours, and solar UV radiation specifics. Whether planning a visit or simply curious about Oskaloosa's climate nuances, these monthly breakdowns provide the information you need for an informed understanding of what to expect throughout the year.
Each link leads to a detailed account of the typical weather conditions for that month, providing both locals and tourists with vital information to plan their daily activities, wardrobe, and travel itineraries accordingly.