Climate Insights for Jefferson County Airport

The climate in Jefferson County Airport is warm and mild. The average annual temperature is 18°C and approximately 857mm of precipitation falls per year. Jefferson County Airport receives a notable amount of rainfall throughout the year, including during its driest month. Jefferson County Airport is in the Northern Hemisphere. Summer begins at the end of June and lasts through September. The summer months are: July, August, June. The coldest months are January, December, February, when temperatures can drop to 2°C. Light snow can occur between January and December.

Temperatures in Jefferson County Airport vary considerably across the year, with a 34°C difference between the coldest and warmest months. July is the hottest month, with daytime highs reaching 36°C and an average of 30°C. January is the coolest month, with minimum temperatures around 2°C and an average of 6°C. On average, daily temperatures fluctuate by about 12°C between overnight lows and afternoon highs. The sharpest temperature change occurs between September and October, with a 7°C shift in average temperatures.

Jefferson County Airport is a moderately rainy area, receiving approximately 857mm of precipitation annually, which averages out to around 71mm per month. The wettest month is May, averaging 118mm of rainfall. April and September also tend to see above-average precipitation. The driest month is November, with just 33mm. That's 84mm less than May, the wettest month. Precipitation varies noticeably between seasons, with the first half (January to June) of the year generally seeing more rainfall. Light snowfall can occur between January and December, totalling around 9cm annually. January is the snowiest month with approximately 5cm.

Jefferson County Airport is relatively calm, with an average annual wind speed of 4km/h. For context, sustained winds below 12km/h are generally light, while anything above 25km/h is considered strong. The windiest month is April, averaging 4km/h, though still comfortable for most outdoor activities. The calmest conditions occur in September, with average winds dropping to 3km/h, making it an ideal period for wind-sensitive activities. Wind conditions are fairly consistent throughout the year, varying by only 1km/h between the calmest and windiest months.

It is currently spring in Jefferson County Airport, which began on March 20, 2026. Jefferson County Airport is in the Northern Hemisphere, where spring begins in March, summer in June, autumn in September, and winter in December. The warmest period peaks in July at around 36°C, while the coldest stretch bottoms out in January near 2°C. Summer is next, beginning on June 21, 2026 — 1 days from now.

The best time to visit Jefferson County Airport is during October, when the weather is most comfortable for travellers. During these months, average temperatures hover around 18°C with modest rainfall averaging 97mm per month. By contrast, July can be uncomfortably hot with highs reaching 36°C, while January is the coldest period with lows dropping to 2°C. Despite being the best months overall, some rain is still likely — pack a waterproof layer and plan a mix of indoor and outdoor activities.

The table below shows monthly climate averages for Jefferson County Airport based on historical weather data. Min and max temperatures represent typical overnight lows and afternoon highs for each month, shown in degrees Celsius (°C). Precipitation is measured in millimetres (mm) and indicates the average total rainfall per month. Snow is measured in centimetres (cm) and reflects average monthly snowfall accumulation. Wind speed is the average sustained speed in kilometres per hour (km/h). All values are based on averages from over 10 years of historical weather data. The current month is highlighted for quick reference.