July
July · August · June
81climate match
United Kingdom · 1991–2020
Best time to visit
Datchworth.
July leads for comfortable weather in Datchworth: typically 22.2°C by day, 12.3°C at night, with 53 mm of rain. Based on measured 1991–2020 NOAA station history.
Best comfortJuly
Typical high22.2°C
Typical low12.3°C
Rain in July53 mm
July
July · August · June
46climate match
June
June · September · July
89climate match
The weakest month is January, scoring 7 against July’s 81 — days reach only 7.2°C, 17° below the 24°C the score treats as ideal.
Month by month
The whole year,
without the guesswork.
The bars show the comfort score. Day and night temperatures come from daily observed highs and lows; rain is the historical monthly estimate.
Jan
77.2° / 1.3°
Feb
137.9° / 1.4°
Mar
2710.5° / 2.7°
Apr
3813.6° / 4.4°
May
5516.7° / 7.3°
Jun
7019.7° / 10.1°
Jul
8122.2° / 12.3°
Aug
7721.7° / 12.2°
Sep
6518.5° / 10.1°
Oct
4014.3° / 7.4°
Nov
2010.1° / 3.9°
Dec
97.6° / 1.7°
| Month | Day | Night | Rain | Wet days | Daylight | Comfort | Coverage |
|---|---|---|---|---|---|---|---|
| January | 7.2°C | 1.3°C | 69 mm | 12.4 | 8 h 15 | 7 | Strong coverage |
| February | 7.9°C | 1.4°C | 51 mm | 10.3 | 9 h 51 | 13 | Strong coverage |
| March | 10.5°C | 2.7°C | 43 mm | 9.2 | 11 h 41 | 27 | Strong coverage |
| April | 13.6°C | 4.4°C | 52 mm | 9.6 | 13 h 48 | 38 | Strong coverage |
| May | 16.7°C | 7.3°C | 49 mm | 8.5 | 15 h 37 | 55 | Strong coverage |
| June | 19.7°C | 10.1°C | 53 mm | 8.4 | 16 h 40 | 70 | Strong coverage |
| July | 22.2°C | 12.3°C | 53 mm | 8.6 | 16 h 15 | 81 | Strong coverage |
| August | 21.7°C | 12.2°C | 68 mm | 9.5 | 14 h 38 | 77 | Strong coverage |
| September | 18.5°C | 10.1°C | 57 mm | 9 | 12 h 34 | 65 | Strong coverage |
| October | 14.3°C | 7.4°C | 79 mm | 11.5 | 10 h 33 | 40 | Strong coverage |
| November | 10.1°C | 3.9°C | 78 mm | 12.3 | 8 h 44 | 20 | Strong coverage |
| December | 7.6°C | 1.7°C | 68 mm | 11.8 | 7 h 48 | 9 | Strong coverage |
What has changed
Datchworth runs +1.6°C
on the 1961–1990 baseline.
Each bar compares the 2011–2025 daytime average for that month against the same month in 1961–1990, measured at the same station. Months where the older record is too thin to compare are left blank.
Jan
+1.2
Feb
+2.3
Mar
+1.8
Apr
+2.1
May
+1.4
Jun
+1.5
Jul
+1.8
Aug
+1.2
Sep
+1.2
Oct
+1.0
Nov
+1.5
Dec
+2.0
| Month | Record high | Record low | Wettest day | Wettest / driest month | Years |
|---|---|---|---|---|---|
| January | 14.2°C28 Jan 2002 | -16.7°C23 Jan 1963 | 26 mm8 Jan 1996 | 158 mm2014 · driest 6 mm in 2000 | 111 |
| February | 18.2°C25 Feb 2019 | -15.6°C24 Feb 1947 | 34 mm9 Feb 2009 | 128 mm2024 · driest 1 mm in 1959 | 111 |
| March | 22.3°C29 Mar 2021 | -12.2°C3 Mar 1965 | 31 mm29 Mar 1952 | 131 mm1979 · driest 1 mm in 1929 | 111 |
| April | 26.8°C18 Apr 2018 | -6.2°C6 Apr 1990 | 34 mm29 Apr 1991 | 148 mm2012 · driest 2 mm in 2021 | 111 |
| May | 32.5°C25 May 2026 | -3.3°C4 May 1941 | 58 mm21 May 2024 | 140 mm2007 · driest 2 mm in 1990 | 111 |
| June | 34.3°C25 Jun 2026 | 0.0°C2 Jun 1962 | 80 mm21 Jun 1936 | 153 mm1936 · driest 0 mm in 2000 | 111 |
| July | 38.5°C18 Jul 2022 | 2.8°C4 Jul 1965 | 59 mm10 Jul 1959 | 138 mm1950 · driest 4 mm in 1921 | 110 |
| August | 36.0°C9 Aug 2003 | 2.8°C31 Aug 1921 | 40 mm8 Aug 2000 | 156 mm2020 · driest 2 mm in 1947 | 110 |
| September | 31.0°C12 Sep 2016 | -1.1°C29 Sep 1919 | 64 mm22 Sep 1992 | 189 mm2024 · driest 0 mm in 1920 | 110 |
| October | 26.8°C1 Oct 2011 | -5.0°C27 Oct 1931 | 60 mm2 Oct 2020 | 204 mm1987 · driest 0 mm in 1920 | 110 |
| November | 18.9°C4 Nov 1938 | -11.1°C27 Nov 1923 | 34 mm3 Nov 1996 | 193 mm1940 · driest 9 mm in 1945 | 109 |
| December | 15.3°C18 Dec 2015 | -17.0°C13 Dec 1981 | 48 mm27 Dec 1979 | 161 mm1989 · driest 0 mm in 1920 | 110 |
| Month | Days 25°C+ | Days 30°C+ | Frost nights | Heavy rain (10 mm+) |
|---|---|---|---|---|
| January | 0 | 0 | 10 | 2 |
| February | 0 | 0 | 10 | <1 |
| March | 0 | 0 | 6 | <1 |
| April | <1 | 0 | 3 | 1 |
| May | <1 | 0 | <1 | 1 |
| June | 2 | <1 | 0 | 2 |
| July | 6 | <1 | 0 | 1 |
| August | 4 | <1 | 0 | 2 |
| September | 1 | 0 | 0 | 2 |
| October | <1 | 0 | <1 | 2 |
| November | 0 | 0 | 5 | 2 |
| December | 0 | 0 | 10 | 2 |
| Month | Warm & dry days | Wet days | Washouts | Week with 3+ wet days | Daytime mean has ranged |
|---|---|---|---|---|---|
| January | 0% | 39% | 5% | 52% | 3.6–8.6°C |
| February | 0% | 35% | 4% | 46% | 4.0–9.6°C |
| March | <1% | 31% | 3% | 42% | 6.8–12.0°C |
| April | 4% | 32% | 3% | 42% | 10.9–14.7°C |
| May | 17% | 30% | 4% | 36% | 14.3–18.4°C |
| June | 35% | 28% | 4% | 35% | 17.4–21.3°C |
| July | 51% | 28% | 5% | 36% | 18.9–23.8°C |
| August | 47% | 30% | 6% | 38% | 18.9–23.1°C |
| September | 23% | 30% | 5% | 39% | 16.2–19.9°C |
| October | 2% | 34% | 7% | 48% | 12.0–15.8°C |
| November | 0% | 39% | 7% | 51% | 7.7–11.2°C |
| December | 0% | 37% | 5% | 50% | 4.3–9.1°C |
A warm and dry day reaches 20°C with under 1 mm of rain; a wet day gets 1 mm or more; a washout gets 10 mm or more. The week column is the share of seven-day stretches in that month, across the station’s whole daily record, that contained three or more wet days — the odds a week-long trip is rained on repeatedly, counted rather than modelled. The last column is the 10th to 90th percentile of that month’s daytime average across individual years: a narrow band means the average is what you will get, a wide one means the average is a midpoint between years that felt quite different.
The evidence behind this page
Nearby, measured,
and named.
- Place identity
- GeoNames 2651491
- NOAA station
- UKE00105900 · ROTHAMSTED
- Station distance
- 35.9 km from the place centre
- Climate period
- 1991–2020
- Minimum month coverage
- 30 usable years
- Daylight
- Calculated from latitude 51.85°, mid-month, sunrise to sunset including refraction. Not a station measurement.
- Important limit
- Historical climate is not a forecast. Nearby stations can miss mountains, coasts, and local microclimates.