November is one of the cooler months of the year in Simi Valley, with average highs near 19.7°C and lows around 6.2°C (mean 13°C). It is about average for rainfall, averaging 32 mm of rainfall and 53% relative humidity across the period.
November is one of the cooler months of the year in Simi Valley. Across 45 years of records, the warmest November in Simi Valley was 1995 — when the month averaged 16.7°C — while the coldest was 1994 at 8.4°C. Typical November days reach 19.7°C with nights near 6.2°C. The long-term trend is warming, about 0.6°C per decade.
November is about average for rainfall in Simi Valley, averaging 32 mm of rainfall. The wettest November on record was 2025 with 164 mm, while the driest was 2021 at 0 mm.
Relative humidity in Simi Valley during November averages 53%. The most humid November was 1983 at 69%, and the least humid was 1989 at 35%.
November receives about 3.6 kWh/m²/day of solar energy in Simi Valley. The sunniest November was 1991 at 3.9 kWh/m²/day, and the cloudiest was 2025 at 3.
Average wind speed in Simi Valley during November is 2.4 m/s. The windiest November was 1992 at 3.1 m/s, while the calmest was 1995 at 1.8 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 11.9°C | 12.7°C | 13.0°C | 13.8°C | 13.8°C | +1.9°C |
| Avg High | 18.3°C | 19.6°C | 19.7°C | 20.6°C | 20.7°C | +2.4°C |
| Avg Low | 5.4°C | 5.8°C | 6.2°C | 7.0°C | 6.9°C | +1.5°C |
| Avg Rain | 55 mm | 21 mm | 22 mm | 27 mm | 39 mm | -15 mm |
November temperatures in Simi Valley have risen by about 2.7°C between 1981–1985 and 2021–2025.
November has ranged from a record low of -4.2°C (1994) to a record high of 31.9°C (2006).
Rainfall in November is about average for rainfall, averaging 32 mm, with a wettest year of 164 mm.
A good time to visit Simi Valley
November is a good time to visit Simi Valley, with days averaging 19.7°C and nights around 6.2°C (mean 13°C, cooler than Simi Valley's yearly average) and moderate rainfall. June and September are marginally more temperate, but November still suits most travellers.
| Year | Avg High | Avg Temp | Avg Low | Hottest Day | Coldest Day | Rainfall | Humidity | Wind | Solar |
|---|---|---|---|---|---|---|---|---|---|
| 2025 🌧️ | 20.5°C | 14.4°C | 8.4°C | 29.9°C | 2.5°C | 164 mm | 68% | 2.1 m/s | 3 |
| 2024 | 19.5°C | 12.8°C | 6.1°C | 25.3°C | 2.0°C | 8 mm | 48% | 2.4 m/s | 3.5 |
| 2023 | 21.1°C | 14.4°C | 7.6°C | 29.7°C | 2.9°C | 14 mm | 47% | 2.3 m/s | 3.6 |
| 2022 | 17.7°C | 10.8°C | 4.0°C | 22.3°C | 1.0°C | 44 mm | 56% | 2.6 m/s | 3.6 |
| 2021 | 24.1°C | 16.4°C | 8.6°C | 29.5°C | 4.6°C | 0 mm | 47% | 2.2 m/s | 3.8 |
| 2020 | 21.5°C | 14.0°C | 6.6°C | 31.1°C | -1.0°C | 6 mm | 43% | 2.2 m/s | 3.8 |
| 2019 | 22.0°C | 15.1°C | 8.1°C | 29.2°C | 1.3°C | 63 mm | 44% | 1.9 m/s | 3.6 |
| 2018 | 21.9°C | 15.1°C | 8.2°C | 30.6°C | 4.3°C | 40 mm | 42% | 2.3 m/s | 3.6 |
| 2017 | 22.7°C | 15.8°C | 9.0°C | 31.3°C | 4.3°C | 1 mm | 53% | 2 m/s | 3.6 |
| 2016 | 21.8°C | 14.8°C | 7.9°C | 29.6°C | 1.8°C | 26 mm | 49% | 2.3 m/s | 3.7 |
| 2015 | 18.8°C | 11.8°C | 4.7°C | 30.3°C | -1.1°C | 7 mm | 48% | 2.5 m/s | 3.8 |
| 2014 | 21.7°C | 14.8°C | 7.8°C | 29.3°C | 3.9°C | 13 mm | 51% | 2.1 m/s | 3.6 |
| 2013 | 20.6°C | 13.8°C | 7.1°C | 29.0°C | 2.4°C | 19 mm | 49% | 2 m/s | 3.5 |
| 2012 | 20.9°C | 14.3°C | 7.6°C | 29.8°C | -0.1°C | 29 mm | 55% | 2 m/s | 3.4 |
| 2011 | 17.6°C | 11.2°C | 4.8°C | 24.9°C | 1.1°C | 40 mm | 59% | 2.5 m/s | 3.4 |
| 2010 | 17.8°C | 11.2°C | 4.5°C | 30.2°C | -2.3°C | 28 mm | 57% | 2.6 m/s | 3.7 |
| 2009 | 20.1°C | 13.0°C | 5.8°C | 29.0°C | 2.0°C | 2 mm | 49% | 2.6 m/s | 3.8 |
| 2008 | 21.6°C | 14.8°C | 8.1°C | 27.8°C | 4.4°C | 58 mm | 57% | 2.5 m/s | 3.5 |
| 2007 | 22.4°C | 15.0°C | 7.6°C | 26.9°C | 2.3°C | 10 mm | 42% | 2.1 m/s | 3.6 |
| 2006 | 21.6°C | 14.5°C | 7.4°C | 31.9°C | -1.1°C | 3 mm | 46% | 2.6 m/s | 3.7 |
| 2005 | 20.3°C | 13.8°C | 7.2°C | 27.7°C | -0.6°C | 13 mm | 55% | 2.7 m/s | 3.6 |
| 2004 | 16.9°C | 10.6°C | 4.3°C | 22.1°C | -3.0°C | 6 mm | 65% | 2 m/s | 3.6 |
| 2003 | 16.6°C | 10.5°C | 4.4°C | 24.3°C | -0.3°C | 13 mm | 63% | 2.1 m/s | 3.3 |
| 2002 | 20.6°C | 13.8°C | 7.0°C | 25.9°C | 4.1°C | 64 mm | 50% | 2.7 m/s | 3.5 |
| 2001 | 19.6°C | 13.3°C | 7.0°C | 26.2°C | 0.0°C | 52 mm | 61% | 2.2 m/s | 3.3 |
| 2000 | 17.7°C | 10.4°C | 3.1°C | 23.3°C | -1.6°C | 0 mm | 54% | 2.3 m/s | 3.7 |
| 1999 | 21.6°C | 14.4°C | 7.2°C | 28.8°C | 1.4°C | 14 mm | 50% | 1.9 m/s | 3.7 |
| 1998 | 18.9°C | 11.9°C | 4.9°C | 24.5°C | 1.5°C | 33 mm | 60% | 2.5 m/s | 3.5 |
| 1997 | 19.2°C | 13.2°C | 7.1°C | 29.9°C | 2.3°C | 62 mm | 63% | 2 m/s | 3.2 |
| 1996 | 19.3°C | 12.7°C | 6.2°C | 26.4°C | -0.2°C | 44 mm | 60% | 2.5 m/s | 3.5 |
| 1995 🔥 | 24.6°C | 16.7°C | 8.8°C | 28.1°C | 5.7°C | 1 mm | 41% | 1.8 m/s | 3.6 |
| 1994 ❄️ | 14.9°C | 8.4°C | 1.9°C | 25.8°C | -4.2°C | 24 mm | 56% | 2.6 m/s | 3.7 |
| 1993 | 18.4°C | 11.8°C | 5.2°C | 26.9°C | 1.2°C | 22 mm | 43% | 2.7 m/s | 3.6 |
| 1992 | 18.3°C | 11.5°C | 4.8°C | 23.8°C | 0.7°C | 2 mm | 49% | 3.1 m/s | 3.7 |
| 1991 | 20.8°C | 13.6°C | 6.3°C | 30.0°C | -1.8°C | 2 mm | 40% | 2.7 m/s | 3.9 |
| 1990 | 19.7°C | 12.8°C | 5.8°C | 27.3°C | -1.4°C | 11 mm | 38% | 2.7 m/s | 3.7 |
| 1989 | 22.0°C | 14.4°C | 6.8°C | 27.6°C | 1.4°C | 7 mm | 35% | 2.8 m/s | 3.8 |
| 1988 | 18.1°C | 11.8°C | 5.5°C | 28.0°C | 0.9°C | 28 mm | 60% | 3 m/s | 3.5 |
| 1987 | 17.9°C | 11.6°C | 5.3°C | 24.6°C | -0.4°C | 42 mm | 66% | 2.6 m/s | 3.4 |
| 1986 | 20.3°C | 13.3°C | 6.3°C | 27.3°C | 3.0°C | 34 mm | 45% | 2.8 m/s | 3.6 |
| 1985 | 16.7°C | 10.4°C | 4.1°C | 26.1°C | -3.2°C | 93 mm | 59% | 2.6 m/s | 3.2 |
| 1984 | 17.0°C | 10.7°C | 4.4°C | 26.0°C | -1.2°C | 58 mm | 62% | 2.4 m/s | 3.2 |
| 1983 | 17.1°C | 11.1°C | 5.0°C | 26.6°C | -1.8°C | 65 mm | 69% | 2.6 m/s | — |
| 1982 | 16.1°C | 10.2°C | 4.3°C | 24.7°C | 0.0°C | 115 mm | 58% | 2.6 m/s | — |
| 1981 | 19.8°C | 13.3°C | 6.8°C | 26.1°C | -0.8°C | 50 mm | 57% | 2.4 m/s | — |
Actual recorded November data for each year, 1981–2025 — sourced from NASA POWER.
The average high in November is around 19.7°C with lows near 6.2°C (mean 13°C), based on 45 years of NASA POWER data.
November averages 32 mm of rainfall in Simi Valley, about average for rainfall. The wettest on record was 164 mm in 2025.
The hottest November reached 31.9°C in 2006. The coldest dipped to -4.2°C in 1994.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average November temperatures have risen by about 2.7°C. Daytime highs moved from 17.3°C to 20.6°C and overnight lows from 4.9°C to 6.9°C over the same span.
November is one of the cooler months of the year in Simi Valley and about average for rainfall, so plan for around 19.7°C daytime highs and 6.2°C at night.
Not quite — November is the 5th coolest month in Simi Valley, averaging 13°C.
For November in Simi Valley, pack warm layers and a jacket for chilly mornings, with typical highs of 19.7°C and lows of 6.2°C.
Relative humidity in November averages 53% — relatively dry.
Average wind speed in November is 2.4 m/s. The windiest November on record averaged 3.1 m/s (1992).
The wettest November on record was 2025 with 164 mm. On average, November sees 32 mm.
All figures are derived from NASA POWER (Prediction Of Worldwide Energy Resources), based on MERRA-2 satellite reanalysis, covering 1981–2025.
Explore how the weather in Simi Valley behaves each November, based on 45 years of NASA POWER climate data from 1981 to 2025. This page breaks down average temperatures, rainfall, humidity, wind and solar radiation for November specifically, along with year-by-year records and how the month has changed over the decades.
