Last updated: May 6, 2024
Under the Köppen–Geiger climate classification Saylorville features a humid continental climate (Dfa).Temperatures typically range between -6 °C (22 °F) and 25 °C (77 °F) through the year, but rarely can drop to -31 °C (-23 °F) or can rise to as high as 39 °C (102 °F).The average annual precipitation amounts to about 999 mm (39.3 inches) and receives 103 rainy days on the 1 mm (0.04 inches) threshold annually.Saylorville enjoys an average of 3054 hours of sunshine throughout the year, and daylight varies from 9 hours 11 minutes to 15 hours 8 minutes per day.
The warmest months in Saylorville are June, July and August, with daily mean temperatures ranging from 23 to 25 °C (74 - 77 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from -6 to -1 °C (22 - 31 °F) throughout the day. On average each year, Saylorville experiences 98 days above 25 °C (77.0 °F) and 121 days below 0 °C (32.0 °F).
Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
---|---|---|---|---|---|---|---|---|---|---|---|---|
Maximum | 14°C (57°F) | 22°C (71°F) | 23°C (74°F) | 30°C (87°F) | 36°C (97°F) | 39°C (102°F) | 36°C (96°F) | 37°C (98°F) | 34°C (94°F) | 32°C (89°F) | 25°C (77°F) | 22°C (73°F) |
Mean maximum | 11°C (52°F) | 15°C (59°F) | 21°C (70°F) | 27°C (80°F) | 32°C (90°F) | 34°C (93°F) | 35°C (95°F) | 33°C (92°F) | 33°C (91°F) | 30°C (86°F) | 19°C (67°F) | 17°C (63°F) |
Average high | -1°C (30°F) | 0°C (32°F) | 9°C (49°F) | 15°C (60°F) | 22°C (72°F) | 29°C (84°F) | 30°C (86°F) | 29°C (84°F) | 26°C (79°F) | 16°C (62°F) | 9°C (48°F) | 4°C (40°F) |
Daily mean | -6°C (22°F) | -5°C (23°F) | 4°C (40°F) | 9°C (49°F) | 17°C (62°F) | 23°C (74°F) | 25°C (77°F) | 23°C (74°F) | 20°C (69°F) | 11°C (53°F) | 3°C (39°F) | -1°C (31°F) |
Average low | -10°C (15°F) | -10°C (15°F) | -1°C (31°F) | 4°C (39°F) | 12°C (54°F) | 18°C (65°F) | 20°C (68°F) | 18°C (64°F) | 15°C (59°F) | 6°C (44°F) | -2°C (29°F) | -6°C (22°F) |
Mean minimum | -25°C (-12°F) | -23°C (-10°F) | -11°C (12°F) | -6°C (21°F) | 4°C (39°F) | 12°C (54°F) | 14°C (58°F) | 12°C (54°F) | 7°C (45°F) | -3°C (27°F) | -12°C (11°F) | -16°C (4°F) |
Minimum | -31°C (-23°F) | -29°C (-19°F) | -21°C (-5°F) | -10°C (13°F) | 1°C (34°F) | 9°C (49°F) | 13°C (55°F) | 11°C (52°F) | 4°C (40°F) | -6°C (21°F) | -21°C (-5°F) | -23°C (-9°F) |
Compare temperature, precipitation, sunshine, UV index in Saylorville, Iowa, United States with other places around the world.
Saylorville usually has the most precipitation in May, September and October, with an average of 11 rainy days and 139 mm (5.5 inches) of precipitation per month.The driest months in Saylorville are January, November and December. On average, 38 mm (1.5 inches) of precipitation falls during these months.
Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
---|---|---|---|---|---|---|---|---|---|---|---|---|
Average precipitation mm (inches) | 37 (1.4) | 40 (1.6) | 81 (3.2) | 75 (2.9) | 169 (6.7) | 109 (4.3) | 76 (3.0) | 87 (3.4) | 120 (4.7) | 128 (5.0) | 39 (1.5) | 37 (1.5) |
Average precipitation days (≥ 1 mm) | 6 | 7 | 8 | 10 | 15 | 10 | 8 | 8 | 10 | 10 | 6 | 5 |
The sunniest months in Saylorville are June, July and August, when the sun shines an average of 11 hours 27 minutes a day.Least sunny months in Saylorville: January, February and December receive an average of 5 hours 57 minutes of sunshine daily.
Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
---|---|---|---|---|---|---|---|---|---|---|---|---|
Mean monthly sunshine hours | 139 | 193 | 221 | 258 | 264 | 344 | 373 | 335 | 278 | 225 | 210 | 210 |
Mean daily daylight hours | 9h 32m | 10h 36m | 11h 58m | 13h 22m | 14h 33m | 15h 8m | 14h 48m | 13h 45m | 12h 25m | 11h 1m | 9h 48m | 9h 11m |
Saylorville experiences the highest level of ultraviolet (UV) radiation in June, July and August, when the maximum UV index can reach values of 9 - 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 4. For more detailed information, check out our hourly Saylorville UV Index data.
Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
---|---|---|---|---|---|---|---|---|---|---|---|---|
UV Index (month maximum) | 3 | 5 | 6 | 8 | 9 | 11 | 10 | 9 | 8 | 6 | 4 | 3 |