Last updated: March 2, 2024
Under the Köppen–Geiger climate classification Williamston features a humid subtropical climate (Cfa). Temperatures typically range between 7 °C (45 °F) and 27 °C (80 °F) through the year, but rarely can drop to -16 °C (3 °F) or can rise to as high as 37 °C (98 °F). The average annual precipitation amounts to about 1351 mm (53.2 inches) and receives 137 rainy days on the 1 mm (0.04 inches) threshold annually. Williamston enjoys an average of 3188 hours of sunshine throughout the year, and daylight varies from 9 hours 45 minutes to 14 hours 32 minutes per day.
The warmest months in Williamston are June, July and August, with daily mean temperatures ranging from 25 to 27 °C (76 - 80 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from 7 to 10 °C (45 - 50 °F) throughout the day. On average each year, Williamston experiences 146 days above 25 °C (77.0 °F) and 31 days below 0 °C (32.0 °F).
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Maximum | 25°C (77°F) |
28°C (82°F) |
30°C (87°F) |
31°C (89°F) |
36°C (97°F) |
36°C (97°F) |
37°C (98°F) |
35°C (95°F) |
36°C (97°F) |
35°C (96°F) |
28°C (84°F) |
25°C (78°F) |
| Mean maximum | 23°C (73°F) |
26°C (78°F) |
27°C (82°F) |
30°C (86°F) |
33°C (92°F) |
34°C (93°F) |
35°C (96°F) |
34°C (94°F) |
34°C (93°F) |
31°C (89°F) |
27°C (81°F) |
23°C (74°F) |
| Average high | 12°C (54°F) |
16°C (60°F) |
17°C (64°F) |
23°C (73°F) |
27°C (80°F) |
29°C (85°F) |
32°C (89°F) |
31°C (88°F) |
29°C (84°F) |
24°C (76°F) |
18°C (64°F) |
15°C (59°F) |
| Daily mean | 7°C (45°F) |
10°C (50°F) |
12°C (53°F) |
17°C (62°F) |
21°C (70°F) |
25°C (76°F) |
27°C (80°F) |
26°C (79°F) |
24°C (75°F) |
19°C (67°F) |
12°C (53°F) |
9°C (49°F) |
| Average low | 2°C (36°F) |
4°C (40°F) |
6°C (43°F) |
11°C (52°F) |
16°C (62°F) |
20°C (69°F) |
23°C (73°F) |
22°C (72°F) |
20°C (68°F) |
14°C (58°F) |
7°C (44°F) |
4°C (40°F) |
| Mean minimum | -9°C (16°F) |
-5°C (23°F) |
-4°C (26°F) |
2°C (35°F) |
7°C (45°F) |
14°C (58°F) |
18°C (65°F) |
17°C (64°F) |
13°C (55°F) |
5°C (41°F) |
-2°C (29°F) |
-4°C (24°F) |
| Minimum | -16°C (3°F) |
-8°C (19°F) |
-5°C (24°F) |
-1°C (30°F) |
4°C (40°F) |
11°C (52°F) |
15°C (59°F) |
14°C (58°F) |
11°C (52°F) |
2°C (36°F) |
-3°C (26°F) |
-8°C (18°F) |
Compare temperature, precipitation, sunshine, UV index in Williamston, North Carolina, United States with other places around the world.
Williamston usually has the most precipitation in June, July and August, with an average of 16 rainy days and 161 mm (6.3 inches) of precipitation per month. The driest months in Williamston are February, March and October. On average, 77 mm (3.0 inches) of precipitation falls during these months.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Average precipitation mm (inches) | 94 (3.7) | 89 (3.5) | 67 (2.6) | 100 (3.9) | 116 (4.6) | 151 (6.0) | 152 (6.0) | 181 (7.1) | 129 (5.1) | 76 (3.0) | 94 (3.7) | 102 (4.0) |
| Average precipitation days (≥ 1 mm) | 8 | 11 | 9 | 10 | 11 | 16 | 16 | 18 | 11 | 8 | 9 | 10 |
The sunniest months in Williamston are June, July and August, when the sun shines an average of 10 hours 29 minutes a day. Least sunny months in Williamston: January, February and December receive an average of 6 hours 16 minutes of sunshine daily.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Mean monthly sunshine hours | 172 | 193 | 259 | 289 | 310 | 316 | 332 | 315 | 285 | 272 | 235 | 206 |
| Mean daily daylight hours | 10h 1m | 10h 53m | 11h 59m | 13h 7m | 14h 4m | 14h 32m | 14h 17m | 13h 26m | 12h 21m | 11h 13m | 10h 14m | 9h 45m |
Williamston experiences the highest level of ultraviolet (UV) radiation in May, June and July, 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 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 Williamston UV Index data.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UV Index (month maximum) | 4 | 6 | 8 | 10 | 11 | 11 | 11 | 10 | 9 | 8 | 5 | 3 |
Discover in-depth weather details for every month in Williamston. 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 Williamston'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.