Last updated: March 2, 2024
Under the Köppen–Geiger climate classification Derby features a humid subtropical climate (Cfa). Temperatures typically range between 1 °C (35 °F) and 27 °C (81 °F) through the year, but rarely can drop to -29 °C (-20 °F) or can rise to as high as 40 °C (105 °F). The average annual precipitation amounts to about 923 mm (36.4 inches) and receives 91 rainy days on the 1 mm (0.04 inches) threshold annually. Derby enjoys an average of 3221 hours of sunshine throughout the year, and daylight varies from 9 hours 35 minutes to 14 hours 42 minutes per day.
The warmest months in Derby are June, July and August, with daily mean temperatures ranging from 26 to 27 °C (78 - 81 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from 1 to 4 °C (35 - 40 °F) throughout the day. On average each year, Derby experiences 128 days above 25 °C (77.0 °F) and 80 days below 0 °C (32.0 °F).
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Maximum | 21°C (71°F) |
25°C (77°F) |
33°C (92°F) |
33°C (91°F) |
35°C (96°F) |
38°C (101°F) |
40°C (105°F) |
38°C (100°F) |
36°C (97°F) |
34°C (94°F) |
25°C (78°F) |
24°C (76°F) |
| Mean maximum | 18°C (64°F) |
22°C (72°F) |
27°C (81°F) |
30°C (86°F) |
32°C (89°F) |
35°C (95°F) |
37°C (100°F) |
37°C (98°F) |
35°C (96°F) |
32°C (90°F) |
24°C (75°F) |
20°C (68°F) |
| Average high | 8°C (46°F) |
8°C (47°F) |
16°C (62°F) |
20°C (68°F) |
25°C (77°F) |
31°C (89°F) |
33°C (91°F) |
31°C (89°F) |
29°C (85°F) |
21°C (70°F) |
14°C (58°F) |
11°C (52°F) |
| Daily mean | 1°C (35°F) |
2°C (36°F) |
10°C (50°F) |
13°C (56°F) |
19°C (67°F) |
26°C (78°F) |
27°C (81°F) |
26°C (79°F) |
23°C (74°F) |
15°C (59°F) |
8°C (46°F) |
4°C (40°F) |
| Average low | -4°C (25°F) |
-4°C (26°F) |
4°C (39°F) |
7°C (46°F) |
14°C (58°F) |
20°C (68°F) |
22°C (72°F) |
21°C (69°F) |
18°C (64°F) |
9°C (49°F) |
2°C (36°F) |
-1°C (30°F) |
| Mean minimum | -14°C (7°F) |
-16°C (4°F) |
-7°C (20°F) |
-2°C (28°F) |
6°C (43°F) |
14°C (57°F) |
17°C (62°F) |
15°C (59°F) |
8°C (47°F) |
-2°C (29°F) |
-8°C (17°F) |
-10°C (14°F) |
| Minimum | -19°C (-2°F) |
-29°C (-20°F) |
-14°C (7°F) |
-6°C (21°F) |
4°C (39°F) |
11°C (53°F) |
15°C (60°F) |
13°C (56°F) |
5°C (42°F) |
-4°C (26°F) |
-15°C (6°F) |
-14°C (8°F) |
Compare temperature, precipitation, sunshine, UV index in Derby, Kansas, United States with other places around the world.
Derby usually has the most precipitation in May, June and October, with an average of 10 rainy days and 133 mm (5.2 inches) of precipitation per month. The driest months in Derby are February, November and December. On average, 28 mm (1.1 inches) of precipitation falls during these months.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Average precipitation mm (inches) | 40 (1.6) | 28 (1.1) | 82 (3.2) | 85 (3.4) | 166 (6.5) | 106 (4.2) | 67 (2.7) | 86 (3.4) | 78 (3.1) | 127 (5.0) | 27 (1.0) | 30 (1.2) |
| Average precipitation days (≥ 1 mm) | 4 | 5 | 8 | 9 | 14 | 8 | 9 | 10 | 7 | 9 | 5 | 3 |
The sunniest months in Derby are June, July and August, when the sun shines an average of 11 hours 14 minutes a day. Least sunny months in Derby: January, February and December receive an average of 6 hours 45 minutes of sunshine daily.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Mean monthly sunshine hours | 174 | 202 | 247 | 265 | 282 | 347 | 365 | 321 | 282 | 256 | 237 | 237 |
| Mean daily daylight hours | 9h 53m | 10h 48m | 11h 59m | 13h 11m | 14h 12m | 14h 42m | 14h 25m | 13h 31m | 12h 22m | 11h 10m | 10h 7m | 9h 35m |
Derby experiences the highest level of ultraviolet (UV) radiation in April, June and July, 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 5. For more detailed information, check out our hourly Derby UV Index data.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UV Index (month maximum) | 3 | 6 | 7 | 10 | 10 | 11 | 11 | 10 | 9 | 7 | 5 | 3 |
Discover in-depth weather details for every month in Derby. 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 Derby'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.