Climate Insights for Hallettsville Municipal Airport

The climate in Hallettsville Municipal Airport is warm and mild. The average annual temperature is 22°C and approximately 1049mm of precipitation falls per year. Hallettsville Municipal Airport receives a notable amount of rainfall throughout the year, including during its driest month. Hallettsville Municipal Airport is in the Northern Hemisphere. Summer begins at the end of June and lasts through September. The summer months are: August, July, June. The coldest months are January, December, February, when temperatures can drop to 8°C.

Temperatures in Hallettsville Municipal Airport vary considerably across the year, with a 28°C difference between the coldest and warmest months. August 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 8°C and an average of 12°C. On average, daily temperatures fluctuate by about 11°C between overnight lows and afternoon highs. The sharpest temperature change occurs between October and November, with a 5°C shift in average temperatures.

Hallettsville Municipal Airport is a moderately rainy area, receiving approximately 1049mm of precipitation annually, which averages out to around 87mm per month. The wettest month is April, averaging 125mm of rainfall. August and September also tend to see above-average precipitation. The driest month is July, with just 50mm. That's 75mm less than April, the wettest month. Rainfall is relatively evenly distributed throughout the year, so there is no pronounced dry or wet season to plan around.

Hallettsville Municipal 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 March, 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 Hallettsville Municipal Airport, which began on March 20, 2026. Hallettsville Municipal 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 August at around 36°C, while the coldest stretch bottoms out in January near 8°C. Summer is next, beginning on June 21, 2026 — 7 days from now.

The best time to visit Hallettsville Municipal Airport is during February, March, October and November, when the weather is most comfortable for travellers. During these months, average temperatures hover around 19°C with modest rainfall averaging 67mm per month. By contrast, August can be uncomfortably hot with highs reaching 36°C, while January is the coldest period with lows dropping to 8°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 Hallettsville Municipal 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. 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.