Valparaiso climate — normals and trends
Valparaiso (United States) has a hot-summer humid continental climate (Dfa) under the Köppen-Geiger classification. Its mean annual temperature is 10.1 °C and it receives 996 mm of precipitation per year.
These figures are normals computed over 86 complete calendar years, from 1940 to 2025, using ERA5 reanalysis data from the Copernicus programme.
The warmest month is July (23.2 °C on average) and the coldest is January (-4.2 °C). Rainfall peaks in May.
Valparaiso averages 112 frost days, 21 hot days (≥ 30 °C) and 127 rainy days per year.
Valparaiso has warmed by +2.0 °C between 1940 and 2025, or +0.24 °C per decade. This trend is statistically significant.
The number of frost days there went from about 128 to 96 per year over the period.
The hottest day of the period reached 39.1 °C (on 14 July 1995) and the coldest -30.1 °C (on 19 January 1994).
Data from ERA5 reanalysis (Copernicus Climate Change Service), redistributed under a CC-BY 4.0 licence. Normals are recomputed whenever the archive is updated.
Climate normals · ERA5
ValparaisoIndiana
- coords
- 41.47°, -87.06°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
10.1°C
Average daily high
14.3°C
Average daily low
6.0°C
Annual rainfall
996mm
Sunshine / day
8.9h
Mean relative humidity
72%
Average peak wind
21.0km/h
Seasonal range
27.4°C
Frost days (< 0 °C)
112 d/yr
Hot days (≥ 30 °C)
21 d/yr
Rainy days (≥ 1 mm)
127 d/yr
Annual snowfall
75.9 cm
Average feels-like high
12.3 °C
Average feels-like low
2.9 °C
Average peak gust
39.7 km/h
Tropical nights (≥ 20 °C)
30 d/yr
Solar radiation
15.1 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+2.0 °C
since 1940
+0.2 °C per decade · r² = 0.38 · p = < 0.001
Trend fitted by linear regression (ordinary least squares) on annual means. A trend is shown only when it is statistically significant (p < 0.05).
A climograph overlays rainfall (bars) and temperature (line): the standard reading in climatology, where you can see at a glance whether the warm season is also the dry one.
Records for the period
Hottest day
39.1 °C
14 July 1995
Coldest day
-30.1 °C
19 January 1994
Wettest day
78 mm
25 June 2021
Windiest day
55.2 km/h
6 April 1988
Strongest gust
108.4 km/h
15 November 1960
Hottest feels-like
45.5 °C
14 July 1995
Coldest feels-like
-36.8 °C
20 January 1985
Snowiest day
25.8 cm
26 January 1967
Sunniest day
14.7 h
15 June 2020
Normals computed over complete calendar years 1940–2025.
A specific year
Pick a year and see how it compares to normal — warmer, drier or more extreme than usual?
Across the whole year
Month by month
| High | vs. normal | Precipitation | vs. normal | |
|---|---|---|---|---|
| Jan | -1.0 °C | -0.2 °C | 37 mm | -24 mm |
| Feb | 1.6 °C | +0.6 °C | 28 mm | -27 mm |
| Mar | 12.0 °C | +5.2 °C | 91 mm | +8 mm |
| Apr | 14.8 °C | +1.2 °C | 89 mm | -15 mm |
| May | 18.3 °C | -1.6 °C | 112 mm | +8 mm |
| Jun | 27.0 °C | +1.4 °C | 140 mm | +37 mm |
| Jul | 28.6 °C | +1.1 °C | 207 mm | +112 mm |
| Aug | 26.0 °C | -0.8 °C | 88 mm | +2 mm |
| Sep | 24.9 °C | +1.6 °C | 36 mm | -44 mm |
| Oct | 19.1 °C | +2.3 °C | 89 mm | +10 mm |
| Nov | 9.2 °C | +0.5 °C | 66 mm | -12 mm |
| Dec | 1.4 °C | -0.7 °C | 69 mm | +1 mm |
The year's extremes
What was the weather like that day?
Your birthday, a wedding, a memorable trip: discover the actual weather for any date since 1940.
Frequently asked questions
What is the climate of Valparaiso?
Valparaiso has a hot-summer humid continental climate (Köppen Dfa). Over 1940-2025, the average annual temperature is 10.1 °C and it receives 996 mm of precipitation per year.
What is the hottest day ever recorded in Valparaiso?
The hottest day measured in Valparaiso between 1940 and 2025 was 14 July 1995, reaching 39.1 °C.
What is the coldest day in Valparaiso?
The coldest day measured in Valparaiso between 1940 and 2025 was 19 January 1994, at -30.1 °C.
Does it snow in Valparaiso?
Yes. Valparaiso gets on average 75.9 cm of snow per year and has around 112 frost days.
Has the climate of Valparaiso warmed?
Yes: Valparaiso warmed by +2.0 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Valparaiso?
The wettest day measured in Valparaiso between 1940 and 2025 was 25 June 2021, with 78 mm of rain in 24 hours.
What was the windiest day in Valparaiso?
The windiest day measured in Valparaiso between 1940 and 2025 was 6 April 1988, with winds reaching 55.2 km/h.
What is the warmest month in Valparaiso?
The warmest month in Valparaiso is July (23.2 °C on average); the coldest is January (-4.2 °C).
How much does it rain in Valparaiso?
Valparaiso receives on average 996 mm of precipitation per year, spread over about 127 rainy days.
Is it sunny in Valparaiso?
Valparaiso gets on average 8.9 hours of sunshine per day, roughly 3,249 hours per year over 1940-2025.
What is the biggest single-day snowfall in Valparaiso?
The heaviest 24-hour snowfall measured in Valparaiso between 1940 and 2025 was 26 January 1967, with 25.8 cm.
Are there tropical nights in Valparaiso?
Yes: Valparaiso has on average 30 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Valparaiso?
In Valparaiso, between 1940 and 2025, the highest apparent temperature reached 45.5 °C on 14 July 1995, and the lowest was -36.8 °C on 20 January 1985.
Compare Valparaiso with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Valparaiso