Climate Insights for Williston
Climate Overview
The climate in Williston is warm and mild. The average annual temperature is 18°C and approximately 141 mm of precipitation falls per year. April is the wettest month, receiving around 25 mm of rainfall. Williston is in the Southern Hemisphere. The seasons are reversed: summer runs from December to February, while winter falls between June and August. The summer months are: January, February, December. The coldest months are July, August, June, when temperatures can drop to 3°C.The climate in Williston is warm and mild. The average annual temperature is 65°F and approximately 5.5 in of precipitation falls per year. April is the wettest month, receiving around 1 in of rainfall. Williston is in the Southern Hemisphere. The seasons are reversed: summer runs from December to February, while winter falls between June and August. The summer months are: January, February, December. The coldest months are July, August, June, when temperatures can drop to 38°F.
Temperature
Temperatures in Williston vary considerably across the year, with a 31°C difference between the coldest and warmest months. The warmest month is January, when average highs reach 34°C and the mean temperature sits around 26°C. July is the coolest month, with minimum temperatures around 3°C and an average of 10°C. On average, daily temperatures fluctuate by about 15°C between overnight lows and afternoon highs. The sharpest temperature change occurs between March and April, with a 5°C shift in average temperatures.Temperatures in Williston vary considerably across the year, with a 55°F difference between the coldest and warmest months. The warmest month is January, when average highs reach 93°F and the mean temperature sits around 79°F. July is the coolest month, with minimum temperatures around 38°F and an average of 50°F. The average daily temperature swing is 28°F, meaning significant differences between daytime and nighttime temperatures. The sharpest temperature change occurs between March and April, with a 8°F shift in average temperatures.
Precipitation
Williston is a quite dry location, receiving approximately 141 mm of precipitation annually, which averages out to around 12 mm per month. The wettest month is April, averaging 25 mm of rainfall. March and January also tend to see above-average precipitation. The driest month is August, with just 2 mm. That's 23 mm less than April, 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.Williston is a quite dry location, receiving approximately 5.5 in of precipitation annually, which averages out to around 0.5 in per month. The wettest month is April, averaging 1 in of rainfall. March and January also tend to see above-average precipitation. The driest month is August, with just 0.1 in. That's 0.9 in less than April, 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.
Wind
Williston is mildly breezy, with an average annual wind speed of 17km/h. For context, sustained winds below 12km/h are generally light, while anything above 25km/h is considered strong. The windiest month is December, averaging 19km/h, though still comfortable for most outdoor activities. The calmest conditions occur in May, with average winds dropping to 16km/h, making it an ideal period for wind-sensitive activities. Wind conditions are fairly consistent throughout the year, varying by only 3km/h between the calmest and windiest months.Williston is moderately windy, with an average annual wind speed of 11mph. For context, sustained winds below 7mph are generally light, while anything above 16mph is considered strong. The windiest month is December, averaging 12mph, noticeable enough to affect lighter outdoor activities. The calmest conditions occur in May, with average winds dropping to 10mph, making it an ideal period for wind-sensitive activities. Wind conditions are fairly consistent throughout the year, varying by only 2mph between the calmest and windiest months.
Best Time to Visit
The best time to visit Williston is during March, April, September, October, November and December, when the weather is most comfortable for travellers. During these months, average temperatures hover around 20°C with modest rainfall averaging 13 mm per month. By contrast, January can be uncomfortably hot with highs reaching 34°C, while July is the coldest period with lows dropping to 3°C. With minimal rainfall expected, you can pack light and plan outdoor activities with confidence.The best time to visit Williston is during March, April, September, October, November and December, when the weather is most comfortable for travellers. During these months, average temperatures hover around 68°F with modest rainfall averaging 0.5 in per month. By contrast, January can be uncomfortably hot with highs reaching 93°F, while July is the coldest period with lows dropping to 38°F. With minimal rainfall expected, you can pack light and plan outdoor activities with confidence.
Monthly Climate Data
The table below shows monthly climate averages for Williston 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.The table below shows monthly climate averages for Williston based on historical weather data. Min and max temperatures represent typical overnight lows and afternoon highs for each month, shown in degrees Fahrenheit (°F). Precipitation is measured in millimetres (mm) and indicates the average total rainfall per month. Wind speed is the average sustained speed in miles per hour (mph). All values are based on averages from over 10 years of historical weather data. The current month is highlighted for quick reference.