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Average daily high in Colnbrook
1991–2020 · 1 data point
Updated 21 Oct 2026
Source: NOAA National Centers for Environmental Information — GHCN-Daily, 1991–2020
Weather through the year long-term average 1991–2020 · Heathrow weather station, 4 km away
8°
2°
Jan
9°
2°
Feb
12°
4°
Mar
15°
6°
Apr
18°
9°
May
21°
12°
Jun
24°
14°
Jul
23°
14°
Aug
20°
10°
Sept
16°
7°
Oct
12°
5°
Nov
8°
3°
Dec
64
50
46
40
48
50
47
58
40
63
79
68
High and low, °C
Precipitation, mm
Source: NOAA National Centers for Environmental Information — GHCN-Daily, 1991–2020
What it means
The typical warmest temperature of the day, averaged over the year.
How it is calculated
Mean of the twelve monthly normals of the daily maximum at the nearest weather station with a long record: 1991–2020, or the latest ten years where the older record is missing (the period is shown).