Donaldsonville (LA) Temperature by Month
The average annual maximum temperature in Donaldsonville, Louisiana, United States of America is 26°C (79°F), with daytime highs ranging from 17°C (63°F) in January to 33°C (91°F) in August. This page covers monthly averages, day-night differences, and how Donaldsonville compares to cities worldwide.
Donaldsonville Monthly Temperatures
Depending on the time of the year, temperatures range from very warm to mild in Donaldsonville. Nighttime lows follow the same pattern, ranging from 23°C (73°F) to 5°C (41°F).
The chart below illustrates the average maximum day and minimum night temperatures in Donaldsonville by month:
Low temperatures are most often recorded between 4 AM and 6 AM, while highs typically occur around 3 PM. August, the city's warmest month, sees 270 hours of sunshine.
The chart below shows the average temperature throughout the year:
Temperature: Donaldsonville vs the United States of America
The map below shows the annual temperature across the United States of America. You can also select individual months if you want to compare a specific time of year.
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Donaldsonville vs World: Temperature Compared
Donaldsonville's average annual maximum temperature is 26°C (79°F). To put that in context, here's how it compares to a few well-known destinations:
Barcelona, Spain has an annual average of around 21°C (70°F), with warm summers and mild, fairly short winters.
Interlaken, Switzerland averages 8°C (46°F) a year, with cold winters and cool summers thanks to its Alpine setting.
Seoul, South Korea averages 18°C (64°F) a year, with four clear seasons, cold winters, and hot humid summers.
Perth, Australia averages 25°C (77°F) annually, with a classic Mediterranean climate — hot dry summers and mild wet winters.
What Does the Temperature Feel Like in Donaldsonville?
Temperature alone doesn't tell the whole story — humidity plays a big role in how warm or cold it actually feels. High humidity in summer makes the heat feel more intense, particularly once temperatures climb above 25°C. In winter, the same humidity can make cold air feel sharper than the thermometer suggests.
In Donaldsonville, January is the coolest month, with average highs of 17°C (63°F) and humidity around 73% — considered high. In August, the warmest month, temperatures average 33°C (91°F) with 77% humidity — conditions that feel high. For a full picture, see our humidity page.
Climate temperature data is typically calculated as a 30-year average. This smooths out year-to-year variability and gives a more reliable picture of what a place is actually like, rather than what happened in any single unusual year.
The readings come from a range of sources — land-based weather stations, ocean buoys, ships, and satellites. That data is collected by weather services around the world, then pooled, quality-checked, and averaged to produce the climate records you see here.
For cities and regions with significant elevation, altitude is one of the biggest factors shaping local temperatures. As a rule of thumb, temperatures fall by around 6°C for every 1,000 metres gained — so a city at 2,000 metres will typically be around 12°C cooler than a city at sea level in the same region. Higher ground also tends to see more dramatic day-to-night temperature swings, since thinner air loses heat faster after sunset.
For more on Donaldsonville's weather — including monthly rainfall, sunshine hours, and humidity — visit our Donaldsonville climate page.
