Climate Insights for Bethesda Airport

The climate in Bethesda Airport is temperate. The average annual temperature is 17°C and approximately 1137mm of precipitation falls per year. Bethesda Airport receives a notable amount of rainfall throughout the year, including during its driest month. Bethesda Airport is in the Northern Hemisphere. Summer begins at the end of June and lasts through September. The summer months are: Luglio, Agosto, Giugno. The coldest months are Gennaio, Febbraio, Dicembre, when temperatures can drop to -1°C. Light snow can occur between January and December.

Temperatures in Bethesda Airport vary considerably across the year, with a 35°C difference between the coldest and warmest months. The warmest month is Luglio, when average highs reach 34°C and the mean temperature sits around 28°C. The coldest month is Gennaio, when overnight lows fall to -1°C and the daily average is 4°C. On average, daily temperatures fluctuate by about 11°C between overnight lows and afternoon highs. The sharpest temperature change occurs between September and October, with a 7°C shift in average temperatures.

Bethesda Airport is a moderately rainy area, receiving approximately 1137mm of precipitation annually, which averages out to around 95mm per month. The wettest month is May, averaging 189mm of rainfall. April and July also tend to see above-average precipitation. The driest month is December, with just 54mm. That's 135mm 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 11cm annually. February is the snowiest month with approximately 5cm.

Bethesda Airport is mildly breezy, with an average annual wind speed of 18km/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 22km/h, noticeable enough to affect lighter outdoor activities. The calmest conditions occur in August, with average winds dropping to 15km/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 19km/h in winter, 20km/h in spring, 15km/h in summer, 18km/h in autumn.

It is currently winter in Bethesda Airport, which began on December 21, 2026. Bethesda 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 Luglio at around 34°C, while the coldest stretch bottoms out in Gennaio near -1°C. Spring is next, beginning on March 20, 2026 — 1 days from now.

The best time to visit Bethesda Airport is during Settembre and Ottobre, when the weather is most comfortable for travellers. During these months, average temperatures hover around 21°C with modest rainfall averaging 95mm per month. By contrast, Luglio can be uncomfortably hot with highs reaching 34°C, while Gennaio 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 Bethesda 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.