Valparaiso Water Works, Indiana climate: Climate normals at a NOAA weather station
Valparaiso Water Works's normal year runs from 18°F January nights to 83°F July afternoons, with 40.3 inches of precipitation and 40 inches of snow a year. (NOAA 1991-2020 normals)
In metric: a yearly mean of 10.3°C, January lows of −8°C, July highs of 28°C, 1,023 mm of precipitation a year.
- NOAA stationValparaiso Water Works
- Station IDUSC00128999
- Location41.51°N 87.04°W
- Elevation800 ft (244 m)
On October 23, the normal high in Valparaiso Water Works is 61°F and the normal low 42°F, and the chance of measurable rain or snow is 35%.
Normals describe a typical year at the station, not a forecast. The National Weather Service forecast for Valparaiso Water Works.
- Jan 32° 18°
- Feb 36° 21°
- Mar 48° 29°
- Apr 61° 39°
- May 71° 49°
- Jun 80° 59°
- Jul 83° 63°
- Aug 81° 62°
- Sep 75° 54°
- Oct 64° 44°
- Nov 49° 34°
- Dec 37° 24°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
What is the weather like at Valparaiso Water Works each month?
July is the warmest month, with normal highs of 83°F; January the coldest, with normal lows of 18°F. The most precipitation falls in May (4.59 in), the least in February (2.24 in).
| Month | High | Low | Mean | Precip. | Snow | Wet days | 90°F days | Freezing nights | Daylight |
|---|---|---|---|---|---|---|---|---|---|
| January | 32°F | 18°F | 24.8°F | 2.38 | 14.6 | 13 | <1 | 28 | 9 h 30 min |
| February | 36°F | 21°F | 28.9°F | 2.24 | 5.5 | 8 | <1 | 23 | 10 h 40 min |
| March | 48°F | 29°F | 38.3°F | 2.63 | 6.7 | 10 | <1 | 21 | 11 h 50 min |
| April | 61°F | 39°F | 49.9°F | 3.74 | 1.2 | 11 | <1 | 7 | 13 h 20 min |
| May | 71°F | 49°F | 60.3°F | 4.59 | 0.0 | 13 | <1 | <1 | 14 h 30 min |
| June | 80°F | 59°F | 69.1°F | 4.33 | 0.0 | 11 | 2 | <1 | 15 h 10 min |
| July | 83°F | 63°F | 73.0°F | 4.10 | 0.0 | 10 | 4 | <1 | 14 h 50 min |
| August | 81°F | 62°F | 71.3°F | 3.57 | 0.0 | 10 | 2 | <1 | 13 h 50 min |
| September | 75°F | 54°F | 64.8°F | 2.92 | 0.0 | 9 | 1 | <1 | 12 h 30 min |
| October | 64°F | 44°F | 53.8°F | 3.93 | 0.3 | 10 | <1 | 4 | 11 h 10 min |
| November | 49°F | 34°F | 41.3°F | 3.26 | 2.3 | 11 | <1 | 15 | 9 h 50 min |
| December | 37°F | 24°F | 30.1°F | 2.58 | 9.4 | 11 | <1 | 26 | 9 h 10 min |
| Year (annual) | 60°F | 41°F | 50.5°F | 40.27 | 40.0 | 127 | 9 | 124 |
The same normals in °C and millimetres
| Month | High | Low | Mean | Precip. | Snow |
|---|---|---|---|---|---|
| January | 0°C | −8°C | −4.0°C | 60 mm | 37 cm |
| February | 2°C | −6°C | −1.7°C | 57 mm | 14 cm |
| March | 9°C | −2°C | 3.5°C | 67 mm | 17 cm |
| April | 16°C | 4°C | 9.9°C | 95 mm | 3 cm |
| May | 22°C | 10°C | 15.7°C | 117 mm | 0 cm |
| June | 27°C | 15°C | 20.6°C | 110 mm | 0 cm |
| July | 28°C | 17°C | 22.8°C | 104 mm | 0 cm |
| August | 27°C | 17°C | 21.8°C | 91 mm | 0 cm |
| September | 24°C | 12°C | 18.2°C | 74 mm | 0 cm |
| October | 18°C | 7°C | 12.1°C | 100 mm | 1 cm |
| November | 10°C | 1°C | 5.2°C | 83 mm | 6 cm |
| December | 3°C | −5°C | −1.1°C | 66 mm | 24 cm |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00128999; annual normals. Wet days: 0.01 inch or more; 90°F days and freezing nights: NOAA's day counts. Daylight: sunrise to sunset on the 15th, computed from the latitude.
Which months are mildest at Valparaiso Water Works?
Normal highs sit between 65°F and 85°F in May, June, July, August and September. Of those, September has the fewest days with rain (9).
That is a measurement, not a recommendation: it counts the months whose normal afternoon high sits between 65°F and 85°F, where a light layer is enough by day.
Source: NOAA NCEI 1991-2020 monthly normals, station USC00128999.
When is the last frost at Valparaiso Water Works?
In Valparaiso Water Works, the last spring frost (32°F) comes after April 22 in half of years and after May 6 in one year in ten; the first autumn frost comes before October 25 in half of years and before October 12 in one year in ten.
Frost-free in half of yearsFrost in 1 to 9 years out of 10Frost most years
- Last spring frost, half of years after
- April 221 year in 10 after May 6; 9 in 10 after April 7
- First autumn frost, half of years before
- October 251 year in 10 before October 12; 9 in 10 before November 6
NOAA puts the median frost-free season at 185 days, and the season without a hard freeze (28°F) at 210 days.
A hard freeze (28°F) comes after April 9 in half of springs and before November 5 in half of autumns.
The USDA's 2023 Plant Hardiness Zone Map puts Valparaiso Water Works in zone 6a in ZIP code 46383, the nearest ZIP area.
Frost dates for every NOAA station in Indiana · Frost dates by ZIP code
Source: NOAA NCEI 1991-2020 annual normals (frost probabilities), station USC00128999; USDA 2023 Plant Hardiness Zone Map, ZIP listings: PRISM Group, Oregon State University, https://prism.oregonstate.edu, accessed October 8, 2026. A 10% date means one year in ten has a frost after it in spring or before it in autumn.
How hot and how cold does it get at Valparaiso Water Works?
In a normal year in Valparaiso Water Works, 9 days a year reach 90°F, 124 nights fall to 32°F or colder and 127 days bring measurable precipitation.
- Days at 90°F or more
- 9a normal year
- Days at 100°F or more
- fewer than 1a normal year
- Nights at 32°F or colder
- 124a normal year
- Days that stay below freezing
- 43high of 32°F or less
- Days with 0.01 inch of precipitation
- 127a normal year
- Days with 1 inch of snow or more
- 15a normal year
The highest temperature in this station's record (since 1893) is 105°F, on July 24, 1934; the lowest is −25°F, on January 20, 1985.
The wettest calendar year on that record is 1990, with 57.77 in; the snowiest season is 1929–30, with 95.6 inches.
Source: NOAA NCEI 1991-2020 annual normals, station USC00128999; records: ACIS (NOAA Regional Climate Centers), station USC00128999. Records use complete months only; a month missing more than three days is left out.
How sunny is it at Valparaiso Water Works?
Over a year 72% of the sunlight that would reach the ground under clear skies gets through the clouds at Valparaiso Water Works, 3.8 kWh per square metre a day. July is the sunniest month (80%) and January the cloudiest (59%).
| Month | Share of clear-sky sunshine | Sunshine, kWh/m² a day |
|---|---|---|
| January | 59% | 1.6 |
| February | 63% | 2.5 |
| March | 67% | 3.6 |
| April | 69% | 4.7 |
| May | 70% | 5.4 |
| June | 77% | 6.1 |
| July | 80% | 6.2 |
| August | 79% | 5.3 |
| September | 79% | 4.4 |
| October | 70% | 2.9 |
| November | 66% | 1.9 |
| December | 59% | 1.4 |
Source: NASA POWER solar climatology, 2001-2020 (CERES SYN1deg). Satellite-based, for the 1-degree cell (about 100 km across) around the station, so it describes the area rather than the airport.
How many heating and cooling degree days does Valparaiso Water Works record?
A normal year at Valparaiso Water Works brings 6,038 heating degree days, 12% more than the median U.S. place (5,373), and 778 cooling degree days, 14% fewer than the median (908). Seven months need 300 or more heating degree days, a monthly mean of about 55°F or colder. For gardens and crops, NOAA counts 3,084 growing degree days a year above 50°F.
| Month | Heating | Cooling |
|---|---|---|
| January | 1,244 | 0 |
| February | 1,011 | 0 |
| March | 826 | 0 |
| April | 462 | 9 |
| May | 197 | 50 |
| June | 40 | 163 |
| July | 4 | 252 |
| August | 10 | 207 |
| September | 94 | 87 |
| October | 358 | 11 |
| November | 711 | 0 |
| December | 1,080 | 0 |
| Year (annual) | 6,038 | 778 |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00128999. A degree day is one degree of a day's mean temperature below 65°F (heating) or above it (cooling); utilities use them to estimate energy use.
How does Valparaiso Water Works's climate compare?
Valparaiso Water Works is warmer than 30 of the 99 places with their own NOAA record in Indiana, and wetter than 25. Across the 7,247 U.S. stations with normals, its annual mean of 50.5°F is warmer than 43%.
In the Köppen classification computed from these normals, Valparaiso Water Works is Dfa: continental, no dry season, hot summer. What the classes mean.
Places with the most similar year elsewhere
Measured month by month on the normal high, low and precipitation, among places of 20,000 or more people in other states:
Source: NOAA NCEI 1991-2020 normals for every station PlainClimate covers. Similarity: the root-mean-square difference of the 36 monthly figures, precipitation weighted so an inch counts like 6°F.
Which places near Valparaiso Water Works share this climate record?
4 places have no NOAA station with 1991-2020 normals of their own, and this station is the nearest full record. A place's own climate can differ from these figures, by several degrees where it sits much higher or lower than the station, nearer the coast, or inside a large city's heat; for the larger places the next nearest records are named with their yearly mean, so the spread around them is visible, and places of 50,000 or more have their own page with NOAA's gridded normals.
- South Haven, IN7,177 people · 6 mi W
- Shorewood Forest, IN3,030 people · 7 mi SW
- Salt Creek Commons, IN1,973 people · 5 mi W
- Wheeler, IN135 people · 7 mi W
Source: Census Bureau 2024 Gazetteer (place centers) and Vintage 2024 population estimates. Distance and direction from the station to each place's center.
Questions about Valparaiso Water Works's climate
What is the coldest month at Valparaiso Water Works?
January, with a normal high of 32°F and a normal low of 18°F. The warmest is July (83°F by day, 63°F at night).
Does it snow at Valparaiso Water Works?
Yes: 40 inches in a normal year, falling on 20 days with 0.1 inch or more, the most in January (14.6 inches).
What is the rainiest month at Valparaiso Water Works?
May, with 4.59 in of precipitation in a normal year; the driest is February with 2.24 in.
What plant hardiness zone is Valparaiso Water Works in?
The USDA's 2023 map puts Valparaiso Water Works in zone 6a in ZIP code 46383, the nearest ZIP area.
How late can frost come at Valparaiso Water Works?
In half of years the last 32°F night comes after April 22; in one year in ten it comes after May 6. Waiting until May 6 leaves about a one-in-ten chance of a later frost.
Nearby and next
- Indiana climateThe statewide normals and every place in the state
- Valparaiso, IN4 miles from this station, 51.8°F a year
- Wanatah, IN7 miles from this station, 49.3°F a year
- Indiana Dunes National Lakeshore, IN9 miles from this station, 50.2°F a year
- La Porte, IN17 miles from this station, 50.0°F a year
- Compare two placesMonth by month, side by side
Download these normals (CSV) · JSON · How these figures are made