Last updated: March 2, 2024
Under the Köppen–Geiger climate classification Smithfield features a humid subtropical climate (Cfa). Temperatures typically range between 5 °C (42 °F) and 27 °C (81 °F) through the year, but rarely can drop to -19 °C (-1 °F) or can rise to as high as 37 °C (99 °F). The average annual precipitation amounts to about 1305 mm (51.4 inches) and receives 129 rainy days on the 1 mm (0.04 inches) threshold annually. Smithfield enjoys an average of 3213 hours of sunshine throughout the year, and daylight varies from 9 hours 39 minutes to 14 hours 38 minutes per day.
The warmest months in Smithfield are June, July and August, with daily mean temperatures ranging from 24 to 27 °C (76 - 81 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from 5 to 8 °C (42 - 47 °F) throughout the day. On average each year, Smithfield experiences 129 days above 25 °C (77.0 °F) and 34 days below 0 °C (32.0 °F).
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Maximum | 23°C (74°F) |
26°C (80°F) |
30°C (86°F) |
32°C (89°F) |
36°C (97°F) |
37°C (98°F) |
37°C (99°F) |
36°C (98°F) |
35°C (95°F) |
34°C (93°F) |
28°C (83°F) |
23°C (74°F) |
| Mean maximum | 21°C (71°F) |
23°C (74°F) |
27°C (81°F) |
30°C (85°F) |
33°C (92°F) |
34°C (94°F) |
35°C (96°F) |
35°C (95°F) |
33°C (92°F) |
31°C (87°F) |
26°C (79°F) |
22°C (72°F) |
| Average high | 10°C (50°F) |
13°C (56°F) |
16°C (60°F) |
21°C (70°F) |
25°C (78°F) |
29°C (85°F) |
32°C (89°F) |
30°C (87°F) |
28°C (82°F) |
23°C (74°F) |
16°C (61°F) |
12°C (55°F) |
| Daily mean | 5°C (42°F) |
8°C (47°F) |
10°C (51°F) |
16°C (61°F) |
20°C (69°F) |
24°C (76°F) |
27°C (81°F) |
26°C (79°F) |
23°C (74°F) |
18°C (65°F) |
11°C (52°F) |
8°C (46°F) |
| Average low | 1°C (34°F) |
3°C (38°F) |
6°C (42°F) |
11°C (52°F) |
16°C (61°F) |
20°C (69°F) |
23°C (73°F) |
22°C (73°F) |
20°C (68°F) |
14°C (58°F) |
6°C (43°F) |
3°C (38°F) |
| Mean minimum | -10°C (15°F) |
-5°C (23°F) |
-3°C (26°F) |
2°C (36°F) |
7°C (45°F) |
15°C (59°F) |
19°C (66°F) |
18°C (65°F) |
13°C (56°F) |
5°C (42°F) |
-2°C (29°F) |
-4°C (25°F) |
| Minimum | -19°C (-1°F) |
-7°C (20°F) |
-5°C (24°F) |
-0°C (32°F) |
4°C (39°F) |
11°C (53°F) |
17°C (62°F) |
17°C (63°F) |
11°C (51°F) |
2°C (36°F) |
-3°C (26°F) |
-8°C (18°F) |
Compare temperature, precipitation, sunshine, UV index in Smithfield, Virginia, United States with other places around the world.
Smithfield usually has the most precipitation in July, August and September, with an average of 13 rainy days and 143 mm (5.6 inches) of precipitation per month. The driest months in Smithfield are January, November and December. On average, 82 mm (3.2 inches) of precipitation falls during these months.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Average precipitation mm (inches) | 85 (3.3) | 107 (4.2) | 88 (3.5) | 106 (4.2) | 122 (4.8) | 117 (4.6) | 135 (5.3) | 169 (6.7) | 126 (4.9) | 89 (3.5) | 76 (3.0) | 84 (3.3) |
| Average precipitation days (≥ 1 mm) | 8 | 11 | 9 | 11 | 10 | 13 | 14 | 16 | 11 | 9 | 8 | 9 |
The sunniest months in Smithfield are June, July and August, when the sun shines an average of 10 hours 59 minutes a day. Least sunny months in Smithfield: January, February and December receive an average of 6 hours 3 minutes of sunshine daily.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Mean monthly sunshine hours | 167 | 183 | 262 | 289 | 311 | 331 | 352 | 327 | 290 | 266 | 230 | 200 |
| Mean daily daylight hours | 9h 56m | 10h 50m | 11h 59m | 13h 9m | 14h 9m | 14h 38m | 14h 22m | 13h 29m | 12h 22m | 11h 11m | 10h 10m | 9h 39m |
Smithfield experiences the highest level of ultraviolet (UV) radiation in May, 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 5. For more detailed information, check out our hourly Smithfield UV Index data.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UV Index (month maximum) | 3 | 6 | 7 | 9 | 10 | 10 | 11 | 10 | 9 | 8 | 5 | 3 |
Discover in-depth weather details for every month in Smithfield. 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 Smithfield'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.