Climate Insights for Jewett Mesa Airport

The climate in Jewett Mesa Airport is temperate. The average annual temperature is 11°C and approximately 390mm of precipitation falls per year. July is the wettest month, receiving around 73mm of rainfall. Jewett Mesa Airport is in the Northern Hemisphere. Summer begins at the end of June and lasts through September. The summer months are: June, July, August. The coldest months are January, December, February, when temperatures can drop to -5°C. Snowfall occurs from January to December, with around 80cm accumulating over the season.

Temperatures in Jewett Mesa Airport vary considerably across the year, with a 33°C difference between the coldest and warmest months. The warmest month is June, when average highs reach 28°C and the mean temperature sits around 21°C. The coldest month is January, when overnight lows fall to -5°C and the daily average is 0°C. On average, daily temperatures fluctuate by about 14°C between overnight lows and afternoon highs. The sharpest temperature change occurs between May and June, with a 7°C shift in average temperatures.

Jewett Mesa Airport is a quite dry location, receiving approximately 390mm of precipitation annually, which averages out to around 32mm per month. The wettest month is July, averaging 73mm of rainfall. August and September also tend to see above-average precipitation. The driest month is June, with just 15mm. That's 59mm less than July, the wettest month. Rainfall is heavily concentrated in certain months, creating a distinct wet and dry season. Visitors should plan around these patterns, as the difference between peak and low months is dramatic. Snowfall is a regular feature from January to December, with around 80cm accumulating over the season. January typically sees the most snow at around 23cm.

Jewett Mesa Airport is relatively calm, with an average annual wind speed of 3km/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 August, with average winds dropping to 2km/h, making it an ideal period for wind-sensitive activities. There is moderate seasonal variation in wind speed, with a 2km/h gap between the calmest and windiest months.

It is currently summer in Jewett Mesa Airport, which began on June 21, 2026. Jewett Mesa 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 June at around 28°C, while the coldest stretch bottoms out in January near -5°C. Autumn is next, beginning on September 23, 2026 — 94 days from now.

The best time to visit Jewett Mesa Airport is during June, July, August and September, when the weather is most comfortable for travellers. During these months, average temperatures hover around 20°C with modest rainfall averaging 48mm per month. By contrast, January can be quite cold with temperatures dropping to -5°C. A light rain jacket is recommended, though showers are generally brief and shouldn't disrupt your plans.

The table below shows monthly climate averages for Jewett Mesa 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.