Valparaiso Weather in September
Average highs run from 89°F on September 1 to 85°F on September 30, and lows from 70°F to 64°F. Normal precipitation for the month is 6.97 in over about 10 wet days.
September day by day
The normal high and low for each date, and the record, in °F.
- Normal low
- Normal high
- Record high
- Record low
September at a glance
- Average high
- 87°F
- Average low
- 68°F
- Precipitation
- 6.97 in
- Record high
- 102°FSep 1, 1954
- Record low
- 37°FSep 30, 1967
- Chance of a freeze
- 0%
- Days of 90°F or more
- 7.7
- Daylight
- 12 h 46 min to 11 h 53 min
- Cloud cover
- 49%
- Humidity
- 77%
- Dew point
- 70°F
- Wind
- 6.9 mph
Every day of the month
A wet day has at least 0.01 inch of precipitation.
| Date | Normal high | Normal low | Record high | Record low | Chance wet |
|---|---|---|---|---|---|
| Sep 1 | 89°F | 70°F | 102°F 1954 | 62°F 1939 | 39% |
| Sep 2 | 89°F | 70°F | 97°F 1954 | 61°F 1968 | 38% |
| Sep 3 | 89°F | 70°F | 98°F 1989 | 60°F 1954 | 38% |
| Sep 4 | 89°F | 70°F | 97°F 1954 | 59°F 1952 | 37% |
| Sep 5 | 88°F | 70°F | 97°F 1954 | 54°F 1981 | 37% |
| Sep 6 | 88°F | 70°F | 98°F 2019 | 58°F 2019 | 36% |
| Sep 7 | 88°F | 70°F | 98°F 2019 | 56°F 2011 | 36% |
| Sep 8 | 88°F | 69°F | 97°F 2019 | 56°F 1953 | 35% |
| Sep 9 | 88°F | 69°F | 96°F 1989 | 56°F 1950 | 35% |
| Sep 10 | 88°F | 69°F | 100°F 1954 | 54°F 1956 | 34% |
| Sep 11 | 88°F | 69°F | 96°F 1985 | 52°F 1976 | 34% |
| Sep 12 | 88°F | 69°F | 98°F 1985 | 50°F 1956 | 33% |
| Sep 13 | 88°F | 69°F | 98°F 1985 | 55°F 1956 | 33% |
| Sep 14 | 88°F | 68°F | 95°F 1954 | 54°F 2015 | 33% |
| Sep 15 | 87°F | 68°F | 96°F 1980 | 52°F 2015 | 32% |
| Sep 16 | 87°F | 68°F | 96°F 1980 | 54°F 1961 | 32% |
| Sep 17 | 87°F | 68°F | 94°F 1982 | 55°F 1967 | 32% |
| Sep 18 | 87°F | 67°F | 98°F 2019 | 54°F 1961 | 31% |
| Sep 19 | 87°F | 67°F | 99°F 2019 | 49°F 1981 | 31% |
| Sep 20 | 87°F | 67°F | 95°F 2025 | 47°F 1981 | 31% |
| Sep 21 | 87°F | 67°F | 95°F 1942 | 51°F 1938 | 30% |
| Sep 22 | 86°F | 66°F | 97°F 1988 | 48°F 1983 | 30% |
| Sep 23 | 86°F | 66°F | 97°F 2022 | 47°F 1983 | 29% |
| Sep 24 | 86°F | 66°F | 94°F 1978 | 47°F 1982 | 29% |
| Sep 25 | 86°F | 65°F | 95°F 1961 | 48°F 1982 | 29% |
| Sep 26 | 86°F | 65°F | 94°F 1961 | 47°F 1975 | 28% |
| Sep 27 | 85°F | 65°F | 96°F 2019 | 43°F 2001 | 28% |
| Sep 28 | 85°F | 64°F | 95°F 1980 | 44°F 2001 | 27% |
| Sep 29 | 85°F | 64°F | 98°F 1986 | 41°F 1967 | 27% |
| Sep 30 | 85°F | 64°F | 94°F 1955 | 37°F 1967 | 26% |
Chance of rain
- Chance of a wet day
Sunrise and sunset
Times for 2026, local time (CDT).
- September 1
- sunrise 6:23 AM, sunset 7:09 PM
- September 30
- sunrise 6:39 AM, sunset 6:32 PM
Other months
Sources
Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00086240 (Niceville), public domain. Records: NOAA GHCN-Daily, station USC00086240, every year on file, quality-flagged values removed. Cloud, humidity, wind and sunshine: NASA POWER (MERRA-2, CERES and GEWEX SRB), 1991-2020. The data was obtained from the National Aeronautics and Space Administration (NASA) Langley Research Center's Prediction Of Worldwide Energy Resources (POWER) project funded through the NASA Earth Science Division: POWER Daily API v2, accessed 2026-09-24. Sun and moon: computed with the NOAA solar equations and Meeus.