Last updated: May 6, 2024
Under the Köppen–Geiger climate classification Heidelberg features a humid subtropical climate (Cfa).Temperatures typically range between 10 °C (50 °F) and 27 °C (81 °F) through the year, but rarely can drop to -12 °C (11 °F) or can rise to as high as 38 °C (102 °F).The average annual precipitation amounts to about 1475 mm (58.1 inches) and receives 136 rainy days on the 1 mm (0.04 inches) threshold annually.Heidelberg enjoys an average of 3083 hours of sunshine throughout the year, and daylight varies from 10 hours 5 minutes to 14 hours 11 minutes per day.
The warmest months in Heidelberg are June, July and August, with daily mean temperatures ranging from 26 to 27 °C (79 - 81 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from 10 to 13 °C (50 - 55 °F) throughout the day. On average each year, Heidelberg experiences 179 days above 25 °C (77.0 °F) and 18 days below 0 °C (32.0 °F).
Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
---|---|---|---|---|---|---|---|---|---|---|---|---|
Maximum | 27°C (82°F) | 28°C (83°F) | 32°C (89°F) | 31°C (89°F) | 35°C (96°F) | 37°C (98°F) | 37°C (99°F) | 37°C (99°F) | 38°C (102°F) | 37°C (98°F) | 29°C (85°F) | 27°C (81°F) |
Mean maximum | 25°C (78°F) | 27°C (81°F) | 29°C (85°F) | 30°C (86°F) | 34°C (93°F) | 35°C (95°F) | 36°C (97°F) | 36°C (97°F) | 36°C (96°F) | 33°C (93°F) | 27°C (81°F) | 25°C (77°F) |
Average high | 15°C (60°F) | 19°C (66°F) | 22°C (72°F) | 25°C (77°F) | 29°C (84°F) | 32°C (89°F) | 33°C (91°F) | 33°C (91°F) | 31°C (88°F) | 27°C (81°F) | 20°C (69°F) | 17°C (63°F) |
Daily mean | 10°C (50°F) | 13°C (55°F) | 16°C (61°F) | 18°C (65°F) | 23°C (74°F) | 26°C (79°F) | 27°C (81°F) | 27°C (81°F) | 26°C (78°F) | 21°C (70°F) | 13°C (56°F) | 11°C (53°F) |
Average low | 5°C (41°F) | 7°C (46°F) | 11°C (52°F) | 12°C (55°F) | 18°C (65°F) | 22°C (71°F) | 23°C (74°F) | 23°C (73°F) | 21°C (70°F) | 16°C (61°F) | 7°C (46°F) | 6°C (43°F) |
Mean minimum | -5°C (23°F) | -3°C (27°F) | -0°C (32°F) | 4°C (39°F) | 11°C (52°F) | 18°C (64°F) | 21°C (70°F) | 19°C (67°F) | 15°C (60°F) | 6°C (42°F) | -1°C (30°F) | -2°C (28°F) |
Minimum | -12°C (11°F) | -9°C (17°F) | -3°C (26°F) | 2°C (37°F) | 8°C (47°F) | 14°C (57°F) | 19°C (66°F) | 18°C (65°F) | 11°C (52°F) | 2°C (35°F) | -5°C (23°F) | -4°C (25°F) |
Compare temperature, precipitation, sunshine, UV index in Heidelberg, Mississippi, United States with other places around the world.
Heidelberg usually has the most precipitation in February, June and July, with an average of 15 rainy days and 149 mm (5.9 inches) of precipitation per month.The driest months in Heidelberg are September, October and November. On average, 90 mm (3.5 inches) of precipitation falls during these months.
Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
---|---|---|---|---|---|---|---|---|---|---|---|---|
Average precipitation mm (inches) | 110 (4.3) | 140 (5.5) | 121 (4.7) | 127 (5.0) | 137 (5.4) | 168 (6.6) | 137 (5.4) | 132 (5.2) | 97 (3.8) | 99 (3.9) | 72 (2.8) | 133 (5.3) |
Average precipitation days (≥ 1 mm) | 8 | 13 | 11 | 8 | 12 | 15 | 17 | 15 | 10 | 8 | 7 | 12 |
The sunniest months in Heidelberg are May, July and August, when the sun shines an average of 10 hours 4 minutes a day.Least sunny months in Heidelberg: January, February and December receive an average of 5 hours 55 minutes of sunshine daily.
Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
---|---|---|---|---|---|---|---|---|---|---|---|---|
Mean monthly sunshine hours | 165 | 175 | 235 | 277 | 309 | 293 | 321 | 306 | 282 | 268 | 250 | 197 |
Mean daily daylight hours | 10h 19m | 11h 3m | 12h 0m | 12h 58m | 13h 47m | 14h 11m | 13h 58m | 13h 14m | 12h 18m | 11h 20m | 10h 30m | 10h 5m |
Heidelberg experiences the highest level of ultraviolet (UV) radiation in April, May and August, 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 / High exposure category. In these months, the maximum values of the UV index do not exceed 6. For more detailed information, check out our hourly Heidelberg UV Index data.
Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
---|---|---|---|---|---|---|---|---|---|---|---|---|
UV Index (month maximum) | 4 | 7 | 8 | 11 | 11 | 11 | 11 | 11 | 10 | 8 | 6 | 4 |