Climate Insights for Arnold Air Force Base

The climate in Arnold Air Force Base is temperate. The average annual temperature is 16°C and approximately 1373mm of precipitation falls per year. Arnold Air Force Base receives a notable amount of rainfall throughout the year, including during its driest month. Arnold Air Force Base 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, February, December, when temperatures can drop to 1°C. Light snow can occur between January and December.

Temperatures in Arnold Air Force Base vary considerably across the year, with a 30°C difference between the coldest and warmest months. The warmest month is July, when average highs reach 31°C and the mean temperature sits around 26°C. January is the coolest month, with minimum temperatures around 1°C and an average of 5°C. On average, daily temperatures fluctuate by about 10°C between overnight lows and afternoon highs. The sharpest temperature change occurs between October and November, with a 6°C shift in average temperatures.

Arnold Air Force Base is a fairly wet location, receiving approximately 1373mm of precipitation annually, which averages out to around 114mm per month. The wettest month is February, averaging 163mm of rainfall. March and December also tend to see above-average precipitation. The driest month is October, with just 77mm. That's 86mm less than February, the wettest month. Rainfall is relatively evenly distributed throughout the year, so there is no pronounced dry or wet season to plan around. Light snowfall can occur between January and December, totalling around 14cm annually. January is the snowiest month with approximately 7cm.

Arnold Air Force Base is mildly breezy, with an average annual wind speed of 15km/h. For context, sustained winds below 12km/h are generally light, while anything above 25km/h is considered strong. The windiest month is February, averaging 18km/h, though still comfortable for most outdoor activities. The calmest conditions occur in July, with average winds dropping to 11km/h, making it an ideal period for wind-sensitive activities. There is moderate seasonal variation in wind speed, with a 7km/h gap between the calmest and windiest months. Wind tends to be stronger during winter months, driven by seasonal pressure systems. The seasonal averages break down to 17km/h in winter, 16km/h in spring, 12km/h in summer, 14km/h in autumn.

It is currently spring in Arnold Air Force Base, which began on March 20, 2026. Arnold Air Force Base 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 31°C, while the coldest stretch bottoms out in January near 1°C. Summer is next, beginning on June 21, 2026 — 88 days from now.

The best time to visit Arnold Air Force Base is during May, June, September and October, when the weather is most comfortable for travellers. During these months, average temperatures hover around 21°C with modest rainfall averaging 88mm per month. By contrast, July can be uncomfortably hot with highs reaching 31°C, while January is the coldest period with lows dropping to 1°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 Arnold Air Force Base 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.