November is one of the cooler months of the year in Letchworth, with average highs near 10°C and lows around 4.1°C (mean 7.1°C). It is about average for rainfall, averaging 65 mm of rainfall and 93% relative humidity across the period.
November is one of the cooler months of the year in Letchworth. Across 45 years of records, the warmest November in Letchworth was 1994 — when the month averaged 9.5°C — while the coldest was 1985 at 3.3°C. Typical November days reach 10°C with nights near 4.1°C. The long-term trend is warming, about 0.3°C per decade.
November is about average for rainfall in Letchworth, averaging 65 mm of rainfall. The wettest November on record was 2022 with 119 mm, while the driest was 2021 at 24 mm.
Relative humidity in Letchworth during November averages 93%. The most humid November was 2002 at 95%, and the least humid was 2009 at 90%.
November receives about 1 kWh/m²/day of solar energy in Letchworth. The sunniest Novembers were 1988, 1989 and 2006 at 1.2 kWh/m²/day, and the cloudiest were 2008 and 2015 at 0.8.
Average wind speed in Letchworth during November is 3.5 m/s. The windiest November was 2009 at 4.6 m/s, while the calmest was 1988 at 2.5 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 6.4°C | 6.7°C | 7.4°C | 7.1°C | 7.9°C | +1.5°C |
| Avg High | 9.4°C | 9.5°C | 10.3°C | 10.0°C | 10.9°C | +1.5°C |
| Avg Low | 3.3°C | 3.8°C | 4.4°C | 4.1°C | 4.9°C | +1.6°C |
| Avg Rain | 53 mm | 61 mm | 75 mm | 67 mm | 73 mm | +19 mm |
November temperatures in Letchworth have risen by about 1.4°C between 1981–1985 and 2021–2025.
November has ranged from a record low of -4.8°C (2010) to a record high of 18.4°C (2005).
Rainfall in November is about average for rainfall, averaging 65 mm, with a wettest year of 119 mm.
A good time to visit Letchworth
November is a good time to visit Letchworth, with days averaging 10°C and nights around 4.1°C (mean 7.1°C, cooler than Letchworth's yearly average) and moderate rainfall. July and August 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 | 11.4°C | 8.3°C | 5.2°C | 17.8°C | -3.4°C | 109 mm | 92% | 3.9 m/s | 1 |
| 2024 | 10.0°C | 7.1°C | 4.2°C | 17.1°C | -3.3°C | 58 mm | 93% | 2.8 m/s | 0.9 |
| 2023 | 10.1°C | 7.3°C | 4.4°C | 14.5°C | -2.9°C | 83 mm | 93% | 3.7 m/s | 1.1 |
| 2022 🌧️ | 12.1°C | 9.2°C | 6.3°C | 16.5°C | 3.0°C | 119 mm | 93% | 3.7 m/s | 1 |
| 2021 | 10.1°C | 7.1°C | 4.0°C | 14.7°C | -2.3°C | 24 mm | 93% | 3.2 m/s | 1.1 |
| 2020 | 11.5°C | 8.3°C | 5.2°C | 16.0°C | 0.6°C | 42 mm | 93% | 3.5 m/s | 1 |
| 2019 | 9.0°C | 6.4°C | 3.8°C | 15.5°C | -1.1°C | 92 mm | 94% | 3 m/s | 0.9 |
| 2018 | 11.2°C | 8.0°C | 4.9°C | 15.2°C | -2.5°C | 57 mm | 92% | 3.6 m/s | 1 |
| 2017 | 9.5°C | 6.1°C | 2.7°C | 14.7°C | -2.3°C | 46 mm | 92% | 3.4 m/s | 1.1 |
| 2016 | 8.8°C | 5.6°C | 2.5°C | 15.1°C | -3.8°C | 79 mm | 92% | 3.3 m/s | 1 |
| 2015 | 12.2°C | 9.2°C | 6.1°C | 16.6°C | -2.5°C | 72 mm | 92% | 4.5 m/s | 0.8 |
| 2014 | 11.0°C | 8.3°C | 5.6°C | 16.3°C | -0.8°C | 96 mm | 94% | 3 m/s | 0.9 |
| 2013 | 8.9°C | 5.9°C | 2.9°C | 13.6°C | -1.9°C | 48 mm | 92% | 3.2 m/s | 1.1 |
| 2012 | 9.1°C | 6.4°C | 3.7°C | 13.8°C | -3.0°C | 92 mm | 94% | 3.4 m/s | 1 |
| 2011 | 12.5°C | 9.4°C | 6.4°C | 15.9°C | -0.9°C | 36 mm | 93% | 3.3 m/s | 0.9 |
| 2010 | 7.9°C | 5.3°C | 2.7°C | 17.6°C | -4.8°C | 46 mm | 93% | 3.5 m/s | 0.9 |
| 2009 | 11.3°C | 8.6°C | 6.0°C | 15.9°C | 2.5°C | 103 mm | 90% | 4.6 m/s | 1 |
| 2008 | 9.6°C | 6.8°C | 3.9°C | 14.7°C | -4.6°C | 76 mm | 93% | 3.6 m/s | 0.8 |
| 2007 | 9.9°C | 6.5°C | 3.2°C | 16.4°C | -2.5°C | 44 mm | 91% | 3.3 m/s | 1.1 |
| 2006 | 11.4°C | 8.2°C | 4.9°C | 14.6°C | -0.9°C | 68 mm | 91% | 3.9 m/s | 1.2 |
| 2005 | 9.5°C | 6.2°C | 2.8°C | 18.4°C | -1.9°C | 40 mm | 92% | 3.6 m/s | 1.1 |
| 2004 | 10.1°C | 7.3°C | 4.5°C | 14.1°C | -1.5°C | 44 mm | 94% | 2.9 m/s | 0.9 |
| 2003 | 11.0°C | 8.0°C | 5.0°C | 16.1°C | -0.5°C | 98 mm | 93% | 3.4 m/s | 1 |
| 2002 | 11.0°C | 8.5°C | 5.9°C | 14.8°C | 4.1°C | 117 mm | 95% | 3.2 m/s | 0.9 |
| 2001 | 10.0°C | 6.7°C | 3.5°C | 14.1°C | -2.0°C | 44 mm | 93% | 3.1 m/s | 1.1 |
| 2000 | 9.2°C | 6.9°C | 4.6°C | 13.8°C | 1.3°C | 119 mm | 94% | 4 m/s | 0.9 |
| 1999 | 9.9°C | 7.0°C | 4.2°C | 16.4°C | -1.0°C | 35 mm | 92% | 3.8 m/s | 1 |
| 1998 | 8.2°C | 5.1°C | 2.0°C | 14.8°C | -2.4°C | 58 mm | 93% | 3.2 m/s | 1 |
| 1997 | 10.8°C | 8.3°C | 5.9°C | 14.4°C | 0.1°C | 76 mm | 95% | 3.3 m/s | 0.9 |
| 1996 | 8.3°C | 5.2°C | 2.1°C | 17.7°C | -3.8°C | 86 mm | 92% | 4 m/s | 1.1 |
| 1995 | 10.2°C | 7.5°C | 4.8°C | 14.9°C | -1.0°C | 46 mm | 93% | 3.2 m/s | 1 |
| 1994 🔥 | 12.1°C | 9.5°C | 6.9°C | 15.9°C | 2.1°C | 48 mm | 94% | 2.9 m/s | 0.9 |
| 1993 | 7.3°C | 4.3°C | 1.3°C | 15.6°C | -4.1°C | 59 mm | 93% | 2.8 m/s | 1 |
| 1992 | 10.0°C | 7.0°C | 3.9°C | 16.2°C | -1.3°C | 95 mm | 93% | 4.2 m/s | 1 |
| 1991 | 8.8°C | 6.0°C | 3.3°C | 15.8°C | -2.4°C | 65 mm | 92% | 3.9 m/s | 1.1 |
| 1990 | 9.4°C | 6.7°C | 4.0°C | 14.9°C | -0.2°C | 44 mm | 92% | 3.3 m/s | 1.1 |
| 1989 | 9.6°C | 6.2°C | 2.8°C | 15.0°C | -3.6°C | 31 mm | 92% | 2.9 m/s | 1.2 |
| 1988 | 8.4°C | 5.3°C | 2.2°C | 15.7°C | -4.4°C | 35 mm | 94% | 2.5 m/s | 1.2 |
| 1987 | 8.7°C | 6.1°C | 3.4°C | 12.2°C | -2.0°C | 53 mm | 94% | 3.2 m/s | 1 |
| 1986 | 10.6°C | 7.4°C | 4.2°C | 14.8°C | 1.7°C | 68 mm | 91% | 4.2 m/s | 1.1 |
| 1985 ❄️ | 6.5°C | 3.3°C | 0.1°C | 16.2°C | -3.9°C | 49 mm | 90% | 3.5 m/s | 1.1 |
| 1984 | 10.9°C | 8.2°C | 5.5°C | 17.6°C | 0.8°C | 81 mm | 93% | 3.6 m/s | 0.9 |
| 1983 | 10.0°C | 6.8°C | 3.6°C | 16.3°C | -4.0°C | 46 mm | 93% | 2.7 m/s | — |
| 1982 | 10.4°C | 7.7°C | 5.0°C | 16.9°C | -0.5°C | 73 mm | 92% | 4.1 m/s | — |
| 1981 | 9.5°C | 6.2°C | 2.9°C | 16.5°C | -0.9°C | 44 mm | 92% | 3.7 m/s | — |
Actual recorded November data for each year, 1981–2025 — sourced from NASA POWER.
The average high in November is around 10°C with lows near 4.1°C (mean 7.1°C), based on 45 years of NASA POWER data.
November averages 65 mm of rainfall in Letchworth, about average for rainfall. The wettest on record was 119 mm in 2022.
The hottest November reached 18.4°C in 2005. The coldest dipped to -4.8°C in 2010.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average November temperatures have risen by about 1.4°C. Daytime highs moved from 9.5°C to 10.7°C and overnight lows from 3.4°C to 4.8°C over the same span.
November is one of the cooler months of the year in Letchworth and about average for rainfall, so plan for around 10°C daytime highs and 4.1°C at night.
Not quite — November is the 5th coolest month in Letchworth, averaging 7.1°C.
For November in Letchworth, pack warm layers and a jacket for chilly mornings, with typical highs of 10°C and lows of 4.1°C. Bring an umbrella or light rain jacket too.
Relative humidity in November averages 93% — quite humid.
Average wind speed in November is 3.5 m/s. The windiest November on record averaged 4.6 m/s (2009).
The wettest November on record was 2022 with 119 mm. On average, November sees 65 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 Letchworth 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.
