July is one of the warmer months of the year in Thetford, with average highs near 21.7°C and lows around 12.1°C (mean 16.9°C). It is about average for rainfall, averaging 59 mm of rainfall and 79% relative humidity across the period.
July is one of the warmer months of the year in Thetford. Across 45 years of records, the warmest July in Thetford was 2006 — when the month averaged 19.4°C — while the coldest was 2000 at 14.8°C. Typical July days reach 21.7°C with nights near 12.1°C. The long-term trend is warming, about 0.3°C per decade.
July is about average for rainfall in Thetford, averaging 59 mm of rainfall. The wettest July on record was 2012 with 120 mm, while the driest was 2022 at 12 mm.
Relative humidity in Thetford during July averages 79%. The most humid July was 2000 at 83%, and the least humid was 1990 at 71%.
July receives about 5 kWh/m²/day of solar energy in Thetford. The sunniest July was 2006 at 6.1 kWh/m²/day, and the cloudiest was 2000 at 4.2.
Average wind speed in Thetford during July is 2.8 m/s. The windiest July was 1988 at 3.9 m/s, while the calmest was 1983 at 2.1 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 16.3°C | 17.0°C | 16.6°C | 17.3°C | 17.4°C | +1.1°C |
| Avg High | 21.0°C | 22.1°C | 21.1°C | 22.1°C | 22.2°C | +1.2°C |
| Avg Low | 11.6°C | 11.9°C | 12.1°C | 12.5°C | 12.5°C | +0.9°C |
| Avg Rain | 54 mm | 44 mm | 72 mm | 62 mm | 63 mm | +8 mm |
July temperatures in Thetford have risen by about 1.2°C between 1981–1985 and 2021–2025.
July has ranged from a record low of 6.1°C (1983) to a record high of 32.3°C (2022).
Rainfall in July is about average for rainfall, averaging 59 mm, with a wettest year of 120 mm.
One of the best times to visit Thetford
July is one of the best times to visit Thetford. Expect days averaging 21.7°C and nights around 12.1°C (mean 16.9°C) — warmer than Thetford's yearly average — with moderate rainfall (59 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 | 23.4°C | 18.4°C | 13.4°C | 28.5°C | 9.6°C | 60 mm | 75% | 2.5 m/s | 5 |
| 2024 | 21.5°C | 16.7°C | 11.9°C | 27.9°C | 7.7°C | 72 mm | 80% | 2.8 m/s | 4.9 |
| 2023 | 21.5°C | 17.0°C | 12.5°C | 26.9°C | 9.3°C | 93 mm | 76% | 3.5 m/s | 4.7 |
| 2022 | 23.9°C | 18.4°C | 12.8°C | 32.3°C | 9.0°C | 12 mm | 73% | 2.7 m/s | 5.5 |
| 2021 | 22.2°C | 17.5°C | 12.8°C | 27.1°C | 8.4°C | 64 mm | 82% | 2.6 m/s | 4.8 |
| 2020 | 20.9°C | 16.3°C | 11.7°C | 28.5°C | 8.4°C | 76 mm | 77% | 3.1 m/s | 4.7 |
| 2019 | 23.0°C | 18.1°C | 13.2°C | 31.5°C | 9.3°C | 64 mm | 76% | 2.7 m/s | 5 |
| 2018 | 24.6°C | 19.2°C | 13.7°C | 30.6°C | 9.0°C | 30 mm | 74% | 2.4 m/s | 5.7 |
| 2017 | 21.5°C | 16.9°C | 12.4°C | 26.6°C | 10.0°C | 80 mm | 79% | 3 m/s | 4.9 |
| 2016 | 21.8°C | 17.1°C | 12.4°C | 27.8°C | 8.3°C | 36 mm | 79% | 2.8 m/s | 5.2 |
| 2015 | 21.5°C | 16.6°C | 11.8°C | 28.5°C | 7.9°C | 110 mm | 76% | 3.1 m/s | 5 |
| 2014 | 22.9°C | 18.2°C | 13.4°C | 27.3°C | 9.2°C | 55 mm | 78% | 2.7 m/s | 5.2 |
| 2013 | 23.2°C | 18.0°C | 12.8°C | 28.4°C | 9.1°C | 36 mm | 79% | 2.4 m/s | 5.4 |
| 2012 🌧️ | 20.3°C | 15.8°C | 11.3°C | 26.6°C | 8.1°C | 120 mm | 80% | 2.8 m/s | 4.6 |
| 2011 | 19.5°C | 15.1°C | 10.6°C | 24.3°C | 7.6°C | 58 mm | 78% | 2.8 m/s | 4.6 |
| 2010 | 22.6°C | 17.8°C | 13.0°C | 27.2°C | 9.1°C | 36 mm | 76% | 2.9 m/s | 5.1 |
| 2009 | 20.9°C | 16.3°C | 11.7°C | 25.8°C | 8.5°C | 79 mm | 79% | 3.2 m/s | 5 |
| 2008 | 21.3°C | 16.6°C | 11.9°C | 27.3°C | 7.9°C | 56 mm | 79% | 3.1 m/s | 5.1 |
| 2007 | 19.8°C | 15.6°C | 11.5°C | 22.8°C | 8.0°C | 84 mm | 81% | 3.4 m/s | 4.8 |
| 2006 🔥 | 24.8°C | 19.4°C | 14.0°C | 29.2°C | 9.4°C | 42 mm | 77% | 2.5 m/s | 6.1 |
| 2005 | 20.8°C | 16.4°C | 12.1°C | 26.3°C | 8.5°C | 80 mm | 82% | 2.9 m/s | 4.3 |
| 2004 | 20.4°C | 16.1°C | 11.7°C | 25.4°C | 7.6°C | 78 mm | 81% | 2.6 m/s | 4.7 |
| 2003 | 21.9°C | 17.6°C | 13.3°C | 26.7°C | 9.9°C | 67 mm | 82% | 2.8 m/s | 4.9 |
| 2002 | 20.7°C | 16.3°C | 11.8°C | 27.6°C | 8.4°C | 91 mm | 82% | 2.6 m/s | 4.6 |
| 2001 | 21.6°C | 17.0°C | 12.4°C | 27.8°C | 7.1°C | 76 mm | 81% | 2.7 m/s | 4.8 |
| 2000 ❄️ | 19.0°C | 14.8°C | 10.6°C | 23.2°C | 7.2°C | 66 mm | 83% | 2.5 m/s | 4.2 |
| 1999 | 22.4°C | 17.3°C | 12.2°C | 26.2°C | 8.9°C | 25 mm | 78% | 2.9 m/s | 5.7 |
| 1998 | 20.0°C | 15.5°C | 11.0°C | 25.6°C | 7.9°C | 39 mm | 79% | 3.3 m/s | 4.6 |
| 1997 | 21.4°C | 16.6°C | 11.8°C | 25.6°C | 8.8°C | 40 mm | 78% | 2.7 m/s | 5.1 |
| 1996 | 21.8°C | 16.5°C | 11.2°C | 28.9°C | 6.6°C | 45 mm | 75% | 2.7 m/s | 5.1 |
| 1995 | 23.6°C | 18.5°C | 13.3°C | 28.6°C | 9.0°C | 42 mm | 79% | 2.8 m/s | 5.7 |
| 1994 | 23.4°C | 18.1°C | 12.7°C | 28.4°C | 9.6°C | 33 mm | 79% | 2.5 m/s | 5.7 |
| 1993 | 20.1°C | 15.5°C | 10.8°C | 24.5°C | 6.1°C | 69 mm | 78% | 3.3 m/s | 4.8 |
| 1992 | 21.9°C | 16.9°C | 12.0°C | 26.1°C | 9.3°C | 83 mm | 76% | 2.8 m/s | 4.7 |
| 1991 | 23.4°C | 18.1°C | 12.9°C | 28.8°C | 10.5°C | 39 mm | 74% | 3.2 m/s | 5 |
| 1990 | 22.5°C | 16.9°C | 11.3°C | 28.9°C | 6.6°C | 26 mm | 71% | 3.1 m/s | 5.3 |
| 1989 | 22.6°C | 17.4°C | 12.3°C | 28.2°C | 8.7°C | 44 mm | 78% | 2.7 m/s | 5.4 |
| 1988 | 19.3°C | 15.2°C | 11.0°C | 24.5°C | 8.5°C | 92 mm | 82% | 3.9 m/s | 4.6 |
| 1987 | 20.2°C | 15.9°C | 11.6°C | 27.0°C | 9.0°C | 88 mm | 81% | 2.9 m/s | 4.3 |
| 1986 | 20.9°C | 16.3°C | 11.6°C | 27.2°C | 7.4°C | 67 mm | 79% | 2.7 m/s | 4.5 |
| 1985 | 21.0°C | 16.2°C | 11.4°C | 25.0°C | 8.4°C | 50 mm | 80% | 3.1 m/s | 4.7 |
| 1984 | 20.4°C | 15.5°C | 10.5°C | 25.5°C | 6.3°C | 34 mm | 81% | 2.6 m/s | 4.8 |
| 1983 | 23.6°C | 18.3°C | 13.0°C | 28.6°C | 6.1°C | 38 mm | 82% | 2.1 m/s | — |
| 1982 | 21.0°C | 16.4°C | 11.7°C | 26.4°C | 8.3°C | 36 mm | 81% | 2.8 m/s | — |
| 1981 | 19.9°C | 15.5°C | 11.1°C | 25.0°C | 8.2°C | 41 mm | 82% | 2.7 m/s | — |
Actual recorded July data for each year, 1981–2025 — sourced from NASA POWER.
The average high in July is around 21.7°C with lows near 12.1°C (mean 16.9°C), based on 45 years of NASA POWER data.
July averages 59 mm of rainfall in Thetford, about average for rainfall. The wettest on record was 120 mm in 2012.
The hottest July reached 32.3°C in 2022. The coldest dipped to 6.1°C in 1983.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average July temperatures have risen by about 1.2°C. Daytime highs moved from 21.2°C to 22.5°C and overnight lows from 11.5°C to 12.7°C over the same span.
July is one of the warmer months of the year in Thetford and about average for rainfall, so plan for around 21.7°C daytime highs and 12.1°C at night.
Not quite — July is the 12th coolest month in Thetford, averaging 16.9°C.
For July in Thetford, pack light layers you can adjust through the day, with typical highs of 21.7°C and lows of 12.1°C. Bring an umbrella or light rain jacket too.
Relative humidity in July averages 79% — quite humid.
Average wind speed in July is 2.8 m/s. The windiest July on record averaged 3.9 m/s (1988).
The wettest July on record was 2012 with 120 mm. On average, July sees 59 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 Thetford behaves each July, 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 July specifically, along with year-by-year records and how the month has changed over the decades.
