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Has the climate in Port Hueneme changed?

Port Hueneme has warmed about 1.9°F since 1998.

About 0.7°F per decade, measured from Port Hueneme's official daily weather records, 1998–2025. Individual years still bounce around — some recent ones came in cool — but the long-term line has clearly risen.

Is that a lot? Port Hueneme's climate has warmed faster than most other cities in United States.

What has actually changed

Each card compares the 1970s (the first ten years of the record) with recent years (the last ten) — the same span the headline and the chart use.

Freezing nights
1 fewer night
1970s
1 / yr
Recent
0 / yr
Milder winters — fewer frosts
Average temperature
+1.1°F
1970s
60.2°F
Recent
61.2°F
A steady upward drift
Hot days above 90°F
1 more day
1970s
2 / yr
Recent
3 / yr
More days of serious heat
Rainy days
17 fewer days
1970s
52 / yr
Recent
35 / yr
Drier on average

Port Hueneme's temperature, year by year

Average temperature for each year from 1998 to 2025.

57°59°61°63°65°1998: 60.6°F1999: 60.4°F2000: 59.7°F2001: 58.8°F2002: 58.7°F2003: 60.3°F2004: 61.5°F2005: 61.5°F2006: 59.9°F2007: 59.1°F2008: 59.8°F2009: 60.0°F2010: 59.7°F2011: 60.8°F2012: 60.5°F2013: 59.8°F2014: 63.0°F2015: 64.1°F2016: 62.8°F2017: 62.7°F2018: 63.0°F2019: 61.1°F2020: 60.7°F2021: 60.2°F2022: 61.1°F2023: 60.4°F2024: 60.8°F2025: 61.1°Flong-term trend19982000201020202025
a warmer-than-average year a cooler-than-average year

Each bar is one year. Most recent years sit above the older ones. Some recent years still came in cool — warming is a slope, not a straight climb.

In day-to-day terms, that long-term shift shows up as about 2 more days above 90°F compared with the 1970s.

When in the year the change shows up

How much warmer each month is now than in the 1970s. Useful if you garden or care about a particular season — otherwise the headline above already has the answer.

0.0°+0.5°+1.0°+1.5°+2.0°+2.5°+3.0°+3.5°+4.0°+4.5°January: +0.8°F+0.8JFebruary: +2.0°F+2.0FMarch: +2.7°F+2.7MApril: +2.4°F+2.4AMay: +1.4°F+1.4MJune: +0.3°F+0.3JJuly: +0.1°F+0.1JAugust: +0.2°F+0.2ASeptember: +0.8°F+0.8SOctober: +2.8°F+2.8ONovember: +4.1°F+4.1NDecember: +1.2°F+1.2D

November has warmed the most — about 4.1°F. The warming runs across the whole year, not just one season.

Methodology & sources

Temperature — the official 1991–2020 climate normals from NOAA's U.S. Climate Normals, measured at Oxnard Ventura CO AP (NOAA GHCN station USW00093110), about 6 km from the city centre.

How we build these numbers →