Valparaiso (IN) Temperature by Month

The average annual maximum temperature in Valparaiso, Indiana, United States of America is 15°C (59°F), with daytime highs ranging from 0°C (32°F) in January to 28°C (82°F) in July. This page covers monthly averages, day-night differences, and how Valparaiso compares to cities worldwide.

In Valparaiso, temperatures differ significantly between summer and winter months. Nighttime lows reflect this range, dropping from 17°C (63°F) in July to -9°C (16°F) in January.

The chart below illustrates the average maximum day and minimum night temperatures in Valparaiso by month:

Temperatures tend to bottom out between 4 AM and 6 AM, then climb to their daily peak around 3 PM. July, the warmest month, sees 309 hours of sunshine.

The chart below shows the average temperature throughout the year:

Valparaiso's average annual maximum temperature is 15°C (59°F). To put that in context, here's how it compares to a few well-known destinations:

Rome, Italy averages 20°C (68°F) annually, with reliably warm summers and comfortable winters.

Reykjavík, Iceland averages 9°C (48°F) a year, mild summers by Icelandic standards, but cold winters and frequent wind.

Buenos Aires, Argentina averages 23°C (73°F) a year, with hot summers and mild winters, and seasons reversed compared to Europe.

Tokyo, Japan averages 21°C (70°F) a year, with hot summers, cool winters, and a well-defined cherry blossom spring.

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.

Global average temperatures have risen by around 1.2°C since the pre-industrial era, and the effects are visible across many regions. Winters are milder on average, with fewer frost days and less snow in many parts of the world. Heatwaves are more frequent and more intense, and Europe's summers of 2018, 2019, and 2020 all set records.

Summers are also getting drier in some areas, while winter rainfall has increased in others. This contributies to higher river levels and more flooding. In many countries, spring arrives earlier and autumn lasts longer. It has knock-on effects for wildlife, agriculture, and local ecosystems.

For more on Valparaiso's weather, including monthly rainfall, sunshine hours, and humidity, visit our Valparaiso climate page.