Last updated: March 2, 2024
Under the Köppen–Geiger climate classification Collinsville features a humid subtropical climate (Cfa). Temperatures typically range between 7 °C (45 °F) and 26 °C (80 °F) through the year, but rarely can drop to -13 °C (9 °F) or can rise to as high as 37 °C (99 °F). The average annual precipitation amounts to about 1623 mm (63.9 inches) and receives 140 rainy days on the 1 mm (0.04 inches) threshold annually. Collinsville enjoys an average of 3027 hours of sunshine throughout the year, and daylight varies from 9 hours 53 minutes to 14 hours 23 minutes per day.
The warmest months in Collinsville are June, July and August, with daily mean temperatures ranging from 25 to 26 °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, Collinsville experiences 142 days above 25 °C (77.0 °F) and 30 days below 0 °C (32.0 °F).
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Maximum | 25°C (77°F) |
26°C (79°F) |
29°C (84°F) |
30°C (87°F) |
34°C (94°F) |
34°C (93°F) |
36°C (98°F) |
36°C (97°F) |
36°C (96°F) |
37°C (99°F) |
25°C (78°F) |
23°C (74°F) |
| Mean maximum | 21°C (71°F) |
24°C (75°F) |
27°C (80°F) |
28°C (83°F) |
32°C (90°F) |
32°C (90°F) |
35°C (94°F) |
35°C (94°F) |
33°C (92°F) |
31°C (88°F) |
24°C (75°F) |
21°C (71°F) |
| Average high | 12°C (53°F) |
15°C (60°F) |
19°C (66°F) |
22°C (73°F) |
27°C (81°F) |
29°C (85°F) |
31°C (89°F) |
31°C (88°F) |
29°C (85°F) |
24°C (76°F) |
17°C (62°F) |
13°C (56°F) |
| Daily mean | 7°C (45°F) |
10°C (50°F) |
13°C (56°F) |
16°C (62°F) |
22°C (71°F) |
25°C (76°F) |
26°C (80°F) |
26°C (79°F) |
24°C (75°F) |
19°C (66°F) |
11°C (52°F) |
9°C (48°F) |
| Average low | 2°C (36°F) |
5°C (41°F) |
8°C (47°F) |
11°C (51°F) |
17°C (62°F) |
20°C (69°F) |
22°C (73°F) |
22°C (72°F) |
19°C (67°F) |
14°C (57°F) |
5°C (42°F) |
4°C (40°F) |
| Mean minimum | -7°C (20°F) |
-4°C (25°F) |
-2°C (28°F) |
2°C (36°F) |
8°C (47°F) |
16°C (61°F) |
19°C (67°F) |
18°C (65°F) |
13°C (56°F) |
4°C (40°F) |
-3°C (28°F) |
-4°C (25°F) |
| Minimum | -13°C (9°F) |
-7°C (20°F) |
-4°C (25°F) |
0°C (33°F) |
6°C (42°F) |
12°C (54°F) |
18°C (64°F) |
16°C (61°F) |
11°C (51°F) |
-0°C (32°F) |
-6°C (21°F) |
-7°C (19°F) |
Compare temperature, precipitation, sunshine, UV index in Collinsville, Alabama, United States with other places around the world.
Collinsville usually has the most precipitation in February, March and December, with an average of 13 rainy days and 176 mm (6.9 inches) of precipitation per month. The driest months in Collinsville are May, July and November. On average, 99 mm (3.9 inches) of precipitation falls during these months.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Average precipitation mm (inches) | 122 (4.8) | 195 (7.7) | 174 (6.9) | 152 (6.0) | 105 (4.1) | 150 (5.9) | 105 (4.2) | 134 (5.3) | 109 (4.3) | 132 (5.2) | 86 (3.4) | 159 (6.3) |
| Average precipitation days (≥ 1 mm) | 10 | 14 | 13 | 9 | 11 | 14 | 16 | 14 | 9 | 9 | 9 | 12 |
The sunniest months in Collinsville are May, July and August, when the sun shines an average of 10 hours 12 minutes a day. Least sunny months in Collinsville: January, February and December receive an average of 5 hours 22 minutes of sunshine daily.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Mean monthly sunshine hours | 154 | 159 | 225 | 273 | 309 | 304 | 330 | 308 | 287 | 263 | 235 | 175 |
| Mean daily daylight hours | 10h 9m | 10h 57m | 11h 59m | 13h 3m | 13h 56m | 14h 23m | 14h 8m | 13h 21m | 12h 20m | 11h 16m | 10h 21m | 9h 53m |
Collinsville experiences the highest level of ultraviolet (UV) radiation in May, July 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 Collinsville UV Index data.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UV Index (month maximum) | 4 | 7 | 8 | 10 | 11 | 11 | 11 | 11 | 9 | 8 | 6 | 4 |
Discover in-depth weather details for every month in Collinsville. 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 Collinsville'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.