As of 15:56 BST

Weather in Chalfont St Giles

+14°

Chalfont St Giles, Thursday, 8 October, 15:56

Overcast. Feels like 14°C. High 14°C, low 6°C.

Pressure1022 mb

Wind11 mph NW

Humidity60%

Visibility6.2 mi

Dew point7°C

Detailed hourly forecast

The month ahead in Chalfont St Giles: daytime temperatures averaging +14.8° and +7.8° overnight — that is 0.6° above the climate average for October. Rain is expected on 4 days (around 19 mm), against a normal of 6 days and 33 mm. The warmest day should be 13 October (+20.7°), the coolest 16 October (+5.5°).

+14.8°/+7.8°

Average day / night

+0.6°

Above average

4 / 6

Wet days / normal

19 mm

Rainfall this month

Ten-day blocks against the climate average

Period	Forecast (day)	Average	Difference
8 October – 17 October	+15.3°	+14.6°	+0.7°
18 October – 27 October	+13.9°	+13.4°	+0.5°
28 October – 6 November	near average	+11.9°	—

October records over 66 years

+25.8°1 October 2011All-time high

-2.1°29 October 2008All-time low

Fri, 09+8 ° /17 °

1.9

+17 °

Chalfont St Giles, Friday, 9 October

Light rain. High 17°C, low 8°C.

Pressure1011 mb

Wind20 mph SW

Humidity76%

Visibility6.2 mi

Dew point13°C

Sat, 10+8 ° /14 °

+14 °

Chalfont St Giles, Saturday, 10 October

Overcast. High 14°C, low 8°C.

Pressure1014 mb

Wind15 mph W

Humidity58%

Visibility6.2 mi

Dew point5°C

Sun, 11+6 ° /13 °

+13 °

Chalfont St Giles, Sunday, 11 October

Clear sky. High 13°C, low 6°C.

Pressure1014 mb

Wind8 mph W

Humidity63%

Visibility6.2 mi

Dew point6°C

Mon, 12+7 ° /16 °

0.9

+16 °

Chalfont St Giles, Monday, 12 October

Light rain. High 16°C, low 7°C.

Pressure1017 mb

Wind14 mph S

Humidity76%

Visibility6.2 mi

Dew point11°C

Tue, 13+12 ° /21 °

1.1

+21 °

Chalfont St Giles, Tuesday, 13 October

Light rain. High 21°C, low 12°C.

Pressure1020 mb

Wind16 mph SW

Humidity73%

Visibility—

Dew point15°C

Wed, 14+8 ° /17 °

+17 °

Chalfont St Giles, Wednesday, 14 October

Overcast. High 17°C, low 8°C.

Pressure1021 mb

Wind15 mph SW

Humidity56%

Visibility—

Dew point7°C

Thu, 15+7 ° /14 °

0.1

+14 °

Chalfont St Giles, Thursday, 15 October

Light rain. High 14°C, low 7°C.

Pressure1020 mb

Wind19 mph W

Humidity48%

Visibility—

Dew point2°C

Fri, 16+6 ° /13 °

+13 °

Chalfont St Giles, Friday, 16 October

Overcast. High 13°C, low 6°C.

Pressure1023 mb

Wind9 mph W

Humidity49%

Visibility—

Dew point1°C

Sat, 17+6 ° /14 °

+14 °

Chalfont St Giles, Saturday, 17 October

Clear sky. High 14°C, low 6°C.

Pressure1022 mb

Wind7 mph E

Humidity37%

Visibility—

Dew point-2°C

Sun, 18+9 ° /11 °

10.5

+11 °

Chalfont St Giles, Sunday, 18 October

Rain. High 11°C, low 9°C.

Pressure1023 mb

Wind10 mph S

Humidity77%

Visibility—

Dew point6°C

Mon, 19+9 ° /11 °

4.2

+11 °

Chalfont St Giles, Monday, 19 October

Light rain. High 11°C, low 9°C.

Pressure1030 mb

Wind8 mph N

Humidity85%

Visibility—

Dew point8°C

Tue, 20+7 ° /14 °

0.2

+14 °

Chalfont St Giles, Tuesday, 20 October

Light rain. High 14°C, low 7°C.

Pressure1031 mb

Wind11 mph NE

Humidity71%

Visibility—

Dew point8°C

Wed, 21+7 ° /15 °

+15 °

Chalfont St Giles, Wednesday, 21 October

Overcast. High 15°C, low 7°C.

Pressure1031 mb

Wind8 mph E

Humidity64%

Visibility—

Dew point7°C

Thu, 22+8 ° /16 °

+16 °

Chalfont St Giles, Thursday, 22 October

Clear sky. High 16°C, low 8°C.

Pressure1026 mb

Wind7 mph E

Humidity59%

Visibility—

Dew point6°C

Fri, 23+9 ° /16 °

+16 °

Chalfont St Giles, Friday, 23 October

Clear sky. High 16°C, low 9°C.

Pressure1019 mb

Wind4 mph SE

Humidity49%

Visibility—

Dew point4°C

Days 17 onward are based on 60-year climate statistics

Sat, 24+8 ° /13 °

2.1

+13 °

Chalfont St Giles, Saturday, 24 October

Climate average for this date — the mean of the last 60 years.

Average high13°C

Average low8°C

Average rainfall2.1 mm

Chance of rain43%

Warmest on record+18° (2017)

Coldest on record+0° (1964)

Sun, 25+8 ° /13 °

1.4

+13 °

Chalfont St Giles, Sunday, 25 October

Climate average for this date — the mean of the last 60 years.

Average high13°C

Average low8°C

Average rainfall1.4 mm

Chance of rain33%

Warmest on record+17° (2013)

Coldest on record+1° (1997)

Mon, 26+8 ° /13 °

1.2

+13 °

Chalfont St Giles, Monday, 26 October

Climate average for this date — the mean of the last 60 years.

Average high13°C

Average low8°C

Average rainfall1.2 mm

Chance of rain27%

Warmest on record+18° (2022)

Coldest on record0° (1997)

Tue, 27+8 ° /13 °

1.6

+13 °

Chalfont St Giles, Tuesday, 27 October

Climate average for this date — the mean of the last 60 years.

Average high13°C

Average low8°C

Average rainfall1.6 mm

Chance of rain35%

Warmest on record+19° (2022)

Coldest on record0° (1962)

Wed, 28+7 ° /13 °

2.1

+13 °

Chalfont St Giles, Wednesday, 28 October

Climate average for this date — the mean of the last 60 years.

Average high13°C

Average low7°C

Average rainfall2.1 mm

Chance of rain42%

Warmest on record+18° (2005)

Coldest on record0° (2003)

Thu, 29+7 ° /12 °

1.3

+12 °

Chalfont St Giles, Thursday, 29 October

Climate average for this date — the mean of the last 60 years.

Average high12°C

Average low7°C

Average rainfall1.3 mm

Chance of rain27%

Warmest on record+20° (2022)

Coldest on record-2° (2008)

Fri, 30+7 ° /13 °

1.4

+13 °

Chalfont St Giles, Friday, 30 October

Climate average for this date — the mean of the last 60 years.

Average high13°C

Average low7°C

Average rainfall1.4 mm

Chance of rain28%

Warmest on record+19° (2001)

Coldest on record-2° (1997)

Sat, 31+7 ° /13 °

2.1

+13 °

Chalfont St Giles, Saturday, 31 October

Climate average for this date — the mean of the last 60 years.

Average high13°C

Average low7°C

Average rainfall2.1 mm

Chance of rain42%

Warmest on record+19° (2014)

Coldest on record-2° (1997)

Sun, 01+7 ° /12 °

2.4

+12 °

Chalfont St Giles, Sunday, 1 November

Climate average for this date — the mean of the last 60 years.

Average high12°C

Average low7°C

Average rainfall2.4 mm

Chance of rain38%

Warmest on record+17° (1999)

Coldest on record-1° (1988)

Mon, 02+7 ° /12 °

+12 °

Chalfont St Giles, Monday, 2 November

Climate average for this date — the mean of the last 60 years.

Average high12°C

Average low7°C

Average rainfall3 mm

Chance of rain33%

Warmest on record+17° (2005)

Coldest on record+1° (1985)

Tue, 03+6 ° /12 °

1.5

+12 °

Chalfont St Giles, Tuesday, 3 November

Climate average for this date — the mean of the last 60 years.

Average high12°C

Average low6°C

Average rainfall1.5 mm

Chance of rain32%

Warmest on record+16° (1996)

Coldest on record-2° (1985)

Wed, 04+6 ° /11 °

2.7

+11 °

Chalfont St Giles, Wednesday, 4 November

Climate average for this date — the mean of the last 60 years.

Average high11°C

Average low6°C

Average rainfall2.7 mm

Chance of rain38%

Warmest on record+16° (2010)

Coldest on record-2° (1966)

Thu, 05+6 ° /11 °

1.5

+11 °

Chalfont St Giles, Thursday, 5 November

Climate average for this date — the mean of the last 60 years.

Average high11°C

Average low6°C

Average rainfall1.5 mm

Chance of rain27%

Warmest on record+16° (2025)

Coldest on record-1° (1988)

Fri, 06+6 ° /11 °

2.2

+11 °

Chalfont St Giles, Friday, 6 November

Climate average for this date — the mean of the last 60 years.

Average high11°C

Average low6°C

Average rainfall2.2 mm

Chance of rain37%

Warmest on record+17° (2025)

Coldest on record0° (1995)

Questions about the month ahead

How accurate is a month-long forecast?

The first 16 days come from weather models — highly reliable for the first 3–5 days, gradually less so after that. Days 17 to 30 for Chalfont St Giles are built from climate averages over the last 60 years, so they show typical weather for those dates rather than a specific forecast.

What does "above average" mean?

We compare the forecast with the climate average for exactly the same calendar days, calculated from 60 years of observations. The difference shows how the coming month compares with a typical one.

Where do the 66-year records come from?

These are real historical extremes recorded in Chalfont St Giles since 1960: the highest and lowest temperature for each calendar date, with the year it happened.

How often is the 30-day forecast updated?

The forecast portion refreshes every hour. The climate portion is based on long-term data and stays stable.