As of 18:26 BST

Weather in Tan-y-Graig

+10°

Tan-y-Graig, Thursday, 8 October, 18:26

Overcast. Feels like 8°C. High 12°C, low 5°C.

Pressure1019 mb

Wind7 mph NE

Humidity86%

Visibility3.1 mi

Dew point8°C

Detailed hourly forecast

The month ahead in Tan-y-Graig: daytime temperatures averaging +12.9° and +6.5° overnight — that is 1° below the climate average for October. Rain is expected on 9 days (around 55 mm), against a normal of 7 days and 43 mm. The warmest day should be 12 October (+16.5°), the coolest 17 October (+2.7°).

+12.9°/+6.5°

Average day / night

−1°

Below average

9 / 7

Wet days / normal

55 mm

Rainfall this month

Ten-day blocks against the climate average

Period	Forecast (day)	Average	Difference
8 October – 17 October	+12.7°	+14.3°	-1.6°
18 October – 27 October	+13.1°	+13.1°	-0°
28 October – 6 November	near average	+12°	—

October records over 66 years

+24.6°1 October 1985All-time high

-0.8°31 October 1988All-time low

Climate averages and records are calculated from the nearest reference point — Llanrwst (10.7 km away).

Fri, 09+9 ° /13 °

+13 °

Tan-y-Graig, Friday, 9 October

Rain. High 13°C, low 9°C.

Pressure1008 mb

Wind17 mph W

Humidity88%

Visibility6.2 mi

Dew point10°C

Sat, 10+8 ° /10 °

4.7

+10 °

Tan-y-Graig, Saturday, 10 October

Light rain. High 10°C, low 8°C.

Pressure1012 mb

Wind18 mph W

Humidity80%

Visibility6.2 mi

Dew point7°C

Sun, 11+7 ° /12 °

+12 °

Tan-y-Graig, Sunday, 11 October

Overcast. High 12°C, low 7°C.

Pressure1013 mb

Wind5 mph W

Humidity71%

Visibility6.2 mi

Dew point6°C

Mon, 12+8 ° /16 °

1.7

+16 °

Tan-y-Graig, Monday, 12 October

Light rain. High 16°C, low 8°C.

Pressure1011 mb

Wind12 mph S

Humidity89%

Visibility6.2 mi

Dew point13°C

Tue, 13+11 ° /16 °

5.3

+16 °

Tan-y-Graig, Tuesday, 13 October

Rain. High 16°C, low 11°C.

Pressure1019 mb

Wind18 mph SW

Humidity84%

Visibility—

Dew point12°C

Wed, 14+7 ° /14 °

12.8

+14 °

Tan-y-Graig, Wednesday, 14 October

Rain. High 14°C, low 7°C.

Pressure1016 mb

Wind18 mph SW

Humidity75%

Visibility—

Dew point10°C

Thu, 15+6 ° /9 °

2.6

+9 °

Tan-y-Graig, Thursday, 15 October

Light rain. High 9°C, low 6°C.

Pressure1019 mb

Wind15 mph W

Humidity79%

Visibility—

Dew point5°C

Fri, 16+4 ° /11 °

+11 °

Tan-y-Graig, Friday, 16 October

Overcast. High 11°C, low 4°C.

Pressure1022 mb

Wind9 mph W

Humidity56%

Visibility—

Dew point2°C

Sat, 17+3 ° /12 °

0.6

+12 °

Tan-y-Graig, Saturday, 17 October

Light rain. High 12°C, low 3°C.

Pressure1020 mb

Wind7 mph S

Humidity64%

Visibility—

Dew point4°C

Sun, 18+9 ° /10 °

7.1

+10 °

Tan-y-Graig, Sunday, 18 October

Rain. High 10°C, low 9°C.

Pressure1020 mb

Wind8 mph S

Humidity100%

Visibility—

Dew point10°C

Mon, 19+8 ° /10 °

1.3

+10 °

Tan-y-Graig, Monday, 19 October

Light rain. High 10°C, low 8°C.

Pressure1031 mb

Wind8 mph N

Humidity91%

Visibility—

Dew point8°C

Tue, 20+5 ° /13 °

+13 °

Tan-y-Graig, Tuesday, 20 October

Overcast. High 13°C, low 5°C.

Pressure1033 mb

Wind4 mph S

Humidity59%

Visibility—

Dew point4°C

Wed, 21+5 ° /15 °

+15 °

Tan-y-Graig, Wednesday, 21 October

Partly cloudy. High 15°C, low 5°C.

Pressure1031 mb

Wind5 mph S

Humidity57%

Visibility—

Dew point5°C

Thu, 22+6 ° /16 °

+16 °

Tan-y-Graig, Thursday, 22 October

Partly cloudy. High 16°C, low 6°C.

Pressure1025 mb

Wind5 mph S

Humidity58%

Visibility—

Dew point6°C

Fri, 23+5 ° /15 °

+15 °

Tan-y-Graig, Friday, 23 October

Clear sky. High 15°C, low 5°C.

Pressure1018 mb

Wind5 mph S

Humidity53%

Visibility—

Dew point4°C

Days 17 onward are based on 60-year climate statistics

Sat, 24+9 ° /13 °

2.9

+13 °

Tan-y-Graig, Saturday, 24 October

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

Average high13°C

Average low9°C

Average rainfall2.9 mm

Chance of rain43%

Warmest on record+18° (1996)

Coldest on record+2° (2007)

Sun, 25+8 ° /13 °

3.7

+13 °

Tan-y-Graig, Sunday, 25 October

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

Average high13°C

Average low8°C

Average rainfall3.7 mm

Chance of rain58%

Warmest on record+17° (2024)

Coldest on record-1° (2010)

Mon, 26+9 ° /13 °

2.9

+13 °

Tan-y-Graig, Monday, 26 October

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

Average high13°C

Average low9°C

Average rainfall2.9 mm

Chance of rain42%

Warmest on record+18° (2005)

Coldest on record+1° (1997)

Tue, 27+9 ° /13 °

3.7

+13 °

Tan-y-Graig, Tuesday, 27 October

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

Average high13°C

Average low9°C

Average rainfall3.7 mm

Chance of rain55%

Warmest on record+20° (2005)

Coldest on record+1° (1962)

Wed, 28+8 ° /13 °

3.1

+13 °

Tan-y-Graig, Wednesday, 28 October

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

Average high13°C

Average low8°C

Average rainfall3.1 mm

Chance of rain57%

Warmest on record+18° (2014)

Coldest on record+2° (2008)

Thu, 29+8 ° /12 °

2.8

+12 °

Tan-y-Graig, Thursday, 29 October

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

Average high12°C

Average low8°C

Average rainfall2.8 mm

Chance of rain47%

Warmest on record+18° (2022)

Coldest on record0° (1997)

Fri, 30+8 ° /13 °

2.6

+13 °

Tan-y-Graig, Friday, 30 October

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

Average high13°C

Average low8°C

Average rainfall2.6 mm

Chance of rain53%

Warmest on record+17° (2005)

Coldest on record+0° (2018)

Sat, 31+9 ° /13 °

3.3

+13 °

Tan-y-Graig, Saturday, 31 October

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

Average high13°C

Average low9°C

Average rainfall3.3 mm

Chance of rain55%

Warmest on record+20° (2014)

Coldest on record-1° (1988)

Sun, 01+8 ° /12 °

3.9

+12 °

Tan-y-Graig, Sunday, 1 November

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

Average high12°C

Average low8°C

Average rainfall3.9 mm

Chance of rain58%

Warmest on record+17° (2015)

Coldest on record+0° (1988)

Mon, 02+8 ° /12 °

4.3

+12 °

Tan-y-Graig, Monday, 2 November

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

Average high12°C

Average low8°C

Average rainfall4.3 mm

Chance of rain62%

Warmest on record+17° (2005)

Coldest on record+1° (1986)

Tue, 03+8 ° /12 °

3.7

+12 °

Tan-y-Graig, Tuesday, 3 November

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

Average high12°C

Average low8°C

Average rainfall3.7 mm

Chance of rain57%

Warmest on record+16° (1979)

Coldest on record-1° (2006)

Wed, 04+7 ° /11 °

2.2

+11 °

Tan-y-Graig, Wednesday, 4 November

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

Average high11°C

Average low7°C

Average rainfall2.2 mm

Chance of rain50%

Warmest on record+16° (1971)

Coldest on record-1° (1967)

Thu, 05+7 ° /11 °

3.4

+11 °

Tan-y-Graig, Thursday, 5 November

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

Average high11°C

Average low7°C

Average rainfall3.4 mm

Chance of rain50%

Warmest on record+18° (2025)

Coldest on record+0° (1965)

Fri, 06+7 ° /11 °

2.2

+11 °

Tan-y-Graig, Friday, 6 November

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

Average high11°C

Average low7°C

Average rainfall2.2 mm

Chance of rain53%

Warmest on record+17° (2025)

Coldest on record+2° (1990)

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 Tan-y-Graig 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 Tan-y-Graig 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.