Last updated: May 6, 2024
Under the Köppen–Geiger climate classification Dayton features a cold semi-arid climate (BSk).Temperatures typically range between -7 °C (20 °F) and 20 °C (69 °F) through the year, but rarely can drop to -31 °C (-23 °F) or can rise to as high as 37 °C (99 °F).The average annual precipitation amounts to about 728 mm (28.7 inches) and receives 137 rainy days on the 1 mm (0.04 inches) threshold annually.Dayton enjoys an average of 3209 hours of sunshine throughout the year, and daylight varies from 8 hours 49 minutes to 15 hours 31 minutes per day.
The warmest months in Dayton are June, July and August, with daily mean temperatures ranging from 16 to 20 °C (61 - 69 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from -7 to -3 °C (20 - 27 °F) throughout the day. On average each year, Dayton experiences 54 days above 25 °C (77.0 °F) and 167 days below 0 °C (32.0 °F).
Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
---|---|---|---|---|---|---|---|---|---|---|---|---|
Maximum | 11°C (52°F) | 14°C (57°F) | 22°C (73°F) | 24°C (76°F) | 27°C (82°F) | 37°C (99°F) | 35°C (96°F) | 35°C (95°F) | 36°C (97°F) | 28°C (82°F) | 21°C (71°F) | 19°C (67°F) |
Mean maximum | 10°C (49°F) | 11°C (52°F) | 17°C (64°F) | 23°C (73°F) | 26°C (78°F) | 28°C (83°F) | 33°C (92°F) | 33°C (92°F) | 32°C (89°F) | 24°C (76°F) | 17°C (63°F) | 13°C (56°F) |
Average high | 1°C (35°F) | -1°C (30°F) | 6°C (44°F) | 10°C (50°F) | 16°C (60°F) | 23°C (73°F) | 27°C (81°F) | 26°C (80°F) | 21°C (71°F) | 12°C (53°F) | 7°C (44°F) | 3°C (37°F) |
Daily mean | -4°C (25°F) | -7°C (20°F) | 0°C (33°F) | 4°C (39°F) | 10°C (50°F) | 16°C (61°F) | 20°C (69°F) | 19°C (66°F) | 14°C (58°F) | 5°C (41°F) | 0°C (33°F) | -3°C (27°F) |
Average low | -9°C (16°F) | -12°C (10°F) | -5°C (24°F) | -2°C (28°F) | 3°C (38°F) | 9°C (49°F) | 12°C (55°F) | 11°C (52°F) | 7°C (45°F) | -1°C (31°F) | -5°C (24°F) | -8°C (19°F) |
Mean minimum | -23°C (-9°F) | -25°C (-13°F) | -15°C (4°F) | -13°C (10°F) | -3°C (27°F) | 3°C (38°F) | 6°C (44°F) | 5°C (42°F) | -1°C (31°F) | -13°C (10°F) | -15°C (5°F) | -17°C (1°F) |
Minimum | -25°C (-13°F) | -31°C (-23°F) | -27°C (-16°F) | -18°C (0°F) | -4°C (24°F) | 0°C (33°F) | 5°C (42°F) | 4°C (40°F) | -6°C (22°F) | -21°C (-6°F) | -23°C (-8°F) | -23°C (-9°F) |
Compare temperature, precipitation, sunshine, UV index in Dayton, Wyoming, United States with other places around the world.
Dayton usually has the most precipitation in April, May and June, with an average of 16 rainy days and 96 mm (3.8 inches) of precipitation per month.The driest months in Dayton are January, November and December. On average, 33 mm (1.3 inches) of precipitation falls during these months.
Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
---|---|---|---|---|---|---|---|---|---|---|---|---|
Average precipitation mm (inches) | 26 (1.0) | 45 (1.8) | 56 (2.2) | 97 (3.8) | 109 (4.3) | 84 (3.3) | 63 (2.5) | 48 (1.9) | 63 (2.5) | 67 (2.6) | 37 (1.5) | 35 (1.4) |
Average precipitation days (≥ 1 mm) | 6 | 11 | 12 | 13 | 19 | 16 | 13 | 11 | 8 | 11 | 9 | 8 |
The sunniest months in Dayton are June, July and August, when the sun shines an average of 12 hours 0 minutes a day.Least sunny months in Dayton: January, February and December receive an average of 6 hours 0 minutes of sunshine daily.
Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
---|---|---|---|---|---|---|---|---|---|---|---|---|
Mean monthly sunshine hours | 155 | 192 | 260 | 263 | 309 | 370 | 389 | 344 | 281 | 234 | 209 | 199 |
Mean daily daylight hours | 9h 13m | 10h 26m | 11h 57m | 13h 31m | 14h 51m | 15h 31m | 15h 9m | 13h 57m | 12h 27m | 10h 54m | 9h 32m | 8h 49m |
Dayton experiences the highest level of ultraviolet (UV) radiation in June, 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 Low / Moderate exposure category. In these months, the maximum values of the UV index do not exceed 3. For more detailed information, check out our hourly Dayton UV Index data.
Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
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UV Index (month maximum) | 3 | 5 | 6 | 9 | 9 | 11 | 10 | 10 | 8 | 5 | 3 | 2 |