Climate Insights for Porterville Municipal Airport

The climate in Porterville Municipal Airport is temperate. The average annual temperature is 16°C and approximately 536mm of precipitation falls per year. January is the wettest month, receiving around 130mm of rainfall. Porterville Municipal Airport 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 December, February, January, when temperatures can drop to 3°C. Snowfall occurs from January to December, with around 63cm accumulating over the season.

Temperatures in Porterville Municipal Airport vary considerably across the year, with a 31°C difference between the coldest and warmest months. The warmest month is July, when average highs reach 34°C and the mean temperature sits around 27°C. December is the coolest month, with minimum temperatures around 3°C and an average of 8°C. On average, daily temperatures fluctuate by about 12°C between overnight lows and afternoon highs. The sharpest temperature change occurs between May and June, with a 6°C shift in average temperatures.

Porterville Municipal Airport is a relatively dry area, receiving approximately 536mm of precipitation annually, which averages out to around 45mm per month. The wettest month is January, averaging 130mm of rainfall. March and February also tend to see above-average precipitation. The driest month is July, with just 1mm. That's 129mm less than January, 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 63cm accumulating over the season. January typically sees the most snow at around 18cm.

Porterville Municipal Airport is relatively calm, with an average annual wind speed of 1km/h. For context, sustained winds below 12km/h are generally light, while anything above 25km/h is considered strong. The windiest month is June, averaging 2km/h, though still comfortable for most outdoor activities. The calmest conditions occur in December, with average winds dropping to 1km/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 summer in Porterville Municipal Airport, which began on June 21, 2026. Porterville 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 July at around 34°C, while the coldest stretch bottoms out in December near 3°C. Autumn is next, beginning on September 23, 2026 — 76 days from now.

The best time to visit Porterville Municipal Airport is during May, June, September and October, when the weather is most comfortable for travellers. During these months, average temperatures hover around 20°C with modest rainfall averaging 13mm per month. By contrast, July can be uncomfortably hot with highs reaching 34°C, while December 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 table below shows monthly climate averages for Porterville 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. 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.