September is one of the warmer months of the year in Frome, with average highs near 19.4°C and lows around 10.1°C (mean 14.8°C). It is about average for rainfall, averaging 63 mm of rainfall and 82% relative humidity across the period.
September is one of the warmer months of the year in Frome. Across 45 years of records, the warmest September in Frome was 2023 — when the month averaged 17.7°C — while the coldest was 1986 at 11.8°C. Typical September days reach 19.4°C with nights near 10.1°C. The long-term trend is warming, about 0.3°C per decade.
September is about average for rainfall in Frome, averaging 63 mm of rainfall. The wettest September on record was 2024 with 143 mm, while the driest was 2014 at 15 mm.
Relative humidity in Frome during September averages 82%. The most humid September was 1992 at 87%, and the least humid was 1990 at 75%.
September receives about 3.2 kWh/m²/day of solar energy in Frome. The sunniest Septembers were 1991 and 2015 at 3.6 kWh/m²/day, and the cloudiest was 2000 at 2.6.
Average wind speed in Frome during September is 3.1 m/s. The windiest Septembers were 1983 and 2004 at 3.8 m/s, while the calmest was 2014 at 2.1 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 14.4°C | 14.3°C | 15.0°C | 14.7°C | 15.7°C | +1.3°C |
| Avg High | 19.0°C | 18.9°C | 19.6°C | 19.3°C | 20.6°C | +1.6°C |
| Avg Low | 9.8°C | 9.8°C | 10.3°C | 10.0°C | 10.8°C | +1°C |
| Avg Rain | 62 mm | 79 mm | 49 mm | 58 mm | 69 mm | +6 mm |
September temperatures in Frome have risen by about 1°C between 1981–1985 and 2021–2025.
September has ranged from a record low of 3.2°C (1987) to a record high of 30.1°C (2023).
Rainfall in September is about average for rainfall, averaging 63 mm, with a wettest year of 143 mm.
One of the best times to visit Frome
September is one of the best times to visit Frome. Expect days averaging 19.4°C and nights around 10.1°C (mean 14.8°C) — warmer than Frome's yearly average — with moderate rainfall (63 mm), so conditions are generally comfortable for sightseeing and outdoor plans.
| Year | Avg High | Avg Temp | Avg Low | Hottest Day | Coldest Day | Rainfall | Humidity | Wind | Solar |
|---|---|---|---|---|---|---|---|---|---|
| 2025 | 19.5°C | 14.7°C | 9.9°C | 23.3°C | 4.8°C | 65 mm | 80% | 3.6 m/s | 3.3 |
| 2024 🌧️ | 18.8°C | 14.5°C | 10.3°C | 25.8°C | 5.7°C | 143 mm | 85% | 3 m/s | 2.7 |
| 2023 🔥 | 22.4°C | 17.7°C | 12.9°C | 30.1°C | 7.3°C | 66 mm | 82% | 2.8 m/s | 3.2 |
| 2022 | 20.4°C | 15.6°C | 10.8°C | 26.0°C | 5.1°C | 59 mm | 78% | 3 m/s | 3.1 |
| 2021 | 21.9°C | 16.6°C | 11.3°C | 28.7°C | 7.2°C | 47 mm | 80% | 2.6 m/s | 3.2 |
| 2020 | 20.6°C | 15.1°C | 9.6°C | 27.1°C | 4.2°C | 32 mm | 79% | 3 m/s | 3.5 |
| 2019 | 19.9°C | 15.0°C | 10.2°C | 24.2°C | 5.5°C | 95 mm | 80% | 3.4 m/s | 3.4 |
| 2018 | 19.5°C | 14.7°C | 9.9°C | 24.0°C | 3.6°C | 48 mm | 79% | 3.1 m/s | 3.1 |
| 2017 | 17.8°C | 13.8°C | 9.8°C | 22.5°C | 6.0°C | 80 mm | 85% | 3.3 m/s | 2.9 |
| 2016 | 20.5°C | 16.1°C | 11.7°C | 25.7°C | 6.1°C | 64 mm | 84% | 3.1 m/s | 3 |
| 2015 | 17.4°C | 12.8°C | 8.2°C | 20.8°C | 4.5°C | 54 mm | 85% | 2.9 m/s | 3.6 |
| 2014 | 21.6°C | 16.2°C | 10.7°C | 24.4°C | 6.9°C | 15 mm | 80% | 2.1 m/s | 3.4 |
| 2013 | 19.9°C | 15.0°C | 10.1°C | 25.6°C | 6.3°C | 54 mm | 81% | 2.7 m/s | 3 |
| 2012 | 17.4°C | 13.1°C | 8.8°C | 22.2°C | 5.2°C | 69 mm | 85% | 3 m/s | 3.4 |
| 2011 | 20.0°C | 15.7°C | 11.4°C | 25.3°C | 8.2°C | 51 mm | 83% | 3.7 m/s | 3.1 |
| 2010 | 18.7°C | 14.1°C | 9.6°C | 22.5°C | 3.6°C | 52 mm | 83% | 3.2 m/s | 3 |
| 2009 | 19.7°C | 14.7°C | 9.7°C | 23.2°C | 7.2°C | 25 mm | 81% | 3.2 m/s | 3.4 |
| 2008 | 17.6°C | 13.5°C | 9.4°C | 19.4°C | 6.2°C | 88 mm | 85% | 3 m/s | 3 |
| 2007 | 19.1°C | 14.4°C | 9.7°C | 23.6°C | 4.6°C | 33 mm | 83% | 3 m/s | 3.3 |
| 2006 | 21.6°C | 17.1°C | 12.6°C | 25.2°C | 8.8°C | 63 mm | 83% | 3.3 m/s | 3.2 |
| 2005 | 20.6°C | 15.7°C | 10.7°C | 26.6°C | 4.7°C | 38 mm | 82% | 2.8 m/s | 3.3 |
| 2004 | 19.7°C | 15.2°C | 10.7°C | 27.3°C | 6.4°C | 37 mm | 82% | 3.8 m/s | 3.3 |
| 2003 | 20.4°C | 15.0°C | 9.6°C | 25.5°C | 3.3°C | 17 mm | 77% | 2.3 m/s | 3.4 |
| 2002 | 20.0°C | 15.0°C | 10.0°C | 24.5°C | 6.0°C | 36 mm | 79% | 2.6 m/s | 3.4 |
| 2001 | 18.4°C | 14.0°C | 9.7°C | 21.5°C | 7.0°C | 42 mm | 81% | 3.5 m/s | 2.9 |
| 2000 | 19.1°C | 15.1°C | 11.2°C | 25.3°C | 7.0°C | 108 mm | 86% | 3.2 m/s | 2.6 |
| 1999 | 19.8°C | 15.5°C | 11.2°C | 26.0°C | 6.2°C | 126 mm | 85% | 3 m/s | 3.3 |
| 1998 | 19.3°C | 15.2°C | 11.1°C | 23.7°C | 6.9°C | 100 mm | 85% | 3.5 m/s | 3.1 |
| 1997 | 19.7°C | 14.8°C | 9.9°C | 23.6°C | 7.8°C | 23 mm | 83% | 2.7 m/s | 3.3 |
| 1996 | 19.3°C | 14.2°C | 9.1°C | 23.7°C | 4.6°C | 28 mm | 77% | 3.2 m/s | 3.3 |
| 1995 | 18.1°C | 13.8°C | 9.4°C | 23.0°C | 5.7°C | 114 mm | 82% | 3.2 m/s | 3 |
| 1994 | 17.4°C | 13.3°C | 9.2°C | 21.7°C | 4.1°C | 90 mm | 84% | 3.2 m/s | 3 |
| 1993 | 17.1°C | 12.9°C | 8.6°C | 24.6°C | 3.8°C | 100 mm | 83% | 3 m/s | 2.8 |
| 1992 | 17.2°C | 13.4°C | 9.6°C | 20.6°C | 5.9°C | 93 mm | 87% | 3.3 m/s | 3.1 |
| 1991 | 21.4°C | 16.1°C | 10.8°C | 27.9°C | 5.8°C | 73 mm | 76% | 2.9 m/s | 3.6 |
| 1990 | 19.3°C | 14.1°C | 8.8°C | 25.3°C | 3.7°C | 48 mm | 75% | 2.9 m/s | 3.3 |
| 1989 | 20.6°C | 15.8°C | 11.0°C | 25.2°C | 7.3°C | 45 mm | 78% | 3.1 m/s | 2.9 |
| 1988 | 18.3°C | 13.9°C | 9.4°C | 24.6°C | 4.9°C | 56 mm | 82% | 3.5 m/s | 2.9 |
| 1987 | 19.3°C | 14.7°C | 10.1°C | 26.0°C | 3.2°C | 57 mm | 82% | 2.8 m/s | 3 |
| 1986 ❄️ | 16.9°C | 11.8°C | 6.7°C | 20.8°C | 3.7°C | 34 mm | 81% | 2.5 m/s | 3.4 |
| 1985 | 19.4°C | 14.8°C | 10.2°C | 24.2°C | 6.0°C | 33 mm | 85% | 2.8 m/s | 3.2 |
| 1984 | 18.5°C | 14.3°C | 10.0°C | 24.6°C | 6.8°C | 72 mm | 78% | 3.6 m/s | 3.1 |
| 1983 | 18.7°C | 14.5°C | 10.2°C | 26.3°C | 6.4°C | 70 mm | 83% | 3.8 m/s | — |
| 1982 | 20.4°C | 15.4°C | 10.4°C | 28.3°C | 5.3°C | 65 mm | 82% | 2.7 m/s | — |
| 1981 | 19.1°C | 14.8°C | 10.5°C | 23.8°C | 6.9°C | 130 mm | 82% | 3.1 m/s | — |
Actual recorded September data for each year, 1981–2025 — sourced from NASA POWER.
The average high in September is around 19.4°C with lows near 10.1°C (mean 14.8°C), based on 45 years of NASA POWER data.
September averages 63 mm of rainfall in Frome, about average for rainfall. The wettest on record was 143 mm in 2024.
The hottest September reached 30.1°C in 2023. The coldest dipped to 3.2°C in 1987.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average September temperatures have risen by about 1°C. Daytime highs moved from 19.2°C to 20.6°C and overnight lows from 10.3°C to 11°C over the same span.
September is one of the warmer months of the year in Frome and about average for rainfall, so plan for around 19.4°C daytime highs and 10.1°C at night.
Not quite — September is the 10th coolest month in Frome, averaging 14.8°C.
For September in Frome, pack light layers you can adjust through the day, with typical highs of 19.4°C and lows of 10.1°C. Bring an umbrella or light rain jacket too.
Relative humidity in September averages 82% — quite humid.
Average wind speed in September is 3.1 m/s. The windiest September on record averaged 3.8 m/s (1983).
The wettest September on record was 2024 with 143 mm. On average, September sees 63 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 Frome behaves each September, 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 September specifically, along with year-by-year records and how the month has changed over the decades.
