As of 22:54 BST

Weather in Cwmsyfiog

+8°

Cwmsyfiog, Wednesday, 7 October, 22:54

Clear sky. Feels like 5°C. High 12°C, low 8°C.

Pressure1019 mb

Wind11 mph NW

Humidity85%

Visibility6.2 mi

Dew point6°C

Detailed hourly forecast

The month ahead in Cwmsyfiog: daytime temperatures averaging +12.4° and +6.8° overnight — that is 0.1° above the climate average for October. Rain is expected on 8 days (around 43 mm), against a normal of 7 days and 55 mm. The warmest day should be 13 October (+15.3°), the coolest 18 October (+2.7°).

+12.4°/+6.8°

Average day / night

+0.1°

Above average

8 / 7

Wet days / normal

43 mm

Rainfall this month

Ten-day blocks against the climate average

Period	Forecast (day)	Average	Difference
7 October – 16 October	+12.9°	+12.7°	+0.2°
17 October – 26 October	+11.5°	+11.4°	+0.1°
27 October – 5 November	near average	+10.3°	—

October records over 66 years

+22.5°1 October 2011All-time high

-3.5°16 October 1993All-time low

Climate averages and records are calculated from the nearest reference point — Tredegar (6.9 km away).

Thu, 08+7 ° /12 °

0.6

+12 °

Cwmsyfiog, Thursday, 8 October

Light rain. High 12°C, low 7°C.

Pressure1024 mb

Wind11 mph NW

Humidity66%

Visibility6.2 mi

Dew point5°C

Fri, 09+8 ° /15 °

4.6

+15 °

Cwmsyfiog, Friday, 9 October

Light rain. High 15°C, low 8°C.

Pressure1011 mb

Wind19 mph W

Humidity99%

Visibility2.1 mi

Dew point13°C

Sat, 10+7 ° /11 °

+11 °

Cwmsyfiog, Saturday, 10 October

Overcast. High 11°C, low 7°C.

Pressure1015 mb

Wind16 mph W

Humidity65%

Visibility6.2 mi

Dew point5°C

Sun, 11+6 ° /11 °

+11 °

Cwmsyfiog, Sunday, 11 October

Overcast. High 11°C, low 6°C.

Pressure1016 mb

Wind7 mph NW

Humidity70%

Visibility6.2 mi

Dew point5°C

Mon, 12+7 ° /14 °

4.1

+14 °

Cwmsyfiog, Monday, 12 October

Light rain. High 14°C, low 7°C.

Pressure1016 mb

Wind14 mph S

Humidity94%

Visibility—

Dew point12°C

Tue, 13+8 ° /15 °

5.9

+15 °

Cwmsyfiog, Tuesday, 13 October

Light rain. High 15°C, low 8°C.

Pressure1020 mb

Wind15 mph SW

Humidity92%

Visibility—

Dew point13°C

Wed, 14+7 ° /15 °

+15 °

Cwmsyfiog, Wednesday, 14 October

Overcast. High 15°C, low 7°C.

Pressure1026 mb

Wind14 mph SW

Humidity75%

Visibility—

Dew point9°C

Thu, 15+5 ° /13 °

1.4

+13 °

Cwmsyfiog, Thursday, 15 October

Light rain. High 13°C, low 5°C.

Pressure1017 mb

Wind16 mph SW

Humidity96%

Visibility—

Dew point12°C

Fri, 16+5 ° /11 °

+11 °

Cwmsyfiog, Friday, 16 October

Overcast. High 11°C, low 5°C.

Pressure1019 mb

Wind6 mph S

Humidity52%

Visibility—

Dew point1°C

Sat, 17+7 ° /12 °

+12 °

Cwmsyfiog, Saturday, 17 October

Rain. High 12°C, low 7°C.

Pressure1012 mb

Wind21 mph S

Humidity74%

Visibility—

Dew point6°C

Sun, 18+3 ° /10 °

+10 °

Cwmsyfiog, Sunday, 18 October

Overcast. High 10°C, low 3°C.

Pressure1028 mb

Wind12 mph SW

Humidity53%

Visibility—

Dew point-1°C

Mon, 19+10 ° /14 °

3.4

+14 °

Cwmsyfiog, Monday, 19 October

Light rain. High 14°C, low 10°C.

Pressure1010 mb

Wind24 mph NW

Humidity95%

Visibility—

Dew point13°C

Tue, 20+11 ° /14 °

+14 °

Cwmsyfiog, Tuesday, 20 October

Overcast. High 14°C, low 11°C.

Pressure1015 mb

Wind22 mph NW

Humidity86%

Visibility—

Dew point11°C

Wed, 21+6 ° /11 °

0.2

+11 °

Cwmsyfiog, Wednesday, 21 October

Light rain. High 11°C, low 6°C.

Pressure1010 mb

Wind22 mph W

Humidity65%

Visibility—

Dew point3°C

Thu, 22+4 ° /9 °

1.3

+9 °

Cwmsyfiog, Thursday, 22 October

Light rain. High 9°C, low 4°C.

Pressure996 mb

Wind22 mph W

Humidity70%

Visibility—

Dew point3°C

Days 17 onward are based on 60-year climate statistics

Fri, 23+6 ° /11 °

3.2

+11 °

Cwmsyfiog, Friday, 23 October

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

Average high11°C

Average low6°C

Average rainfall3.2 mm

Chance of rain35%

Warmest on record+16° (2011)

Coldest on record-1° (1987)

Sat, 24+6 ° /11 °

4.5

+11 °

Cwmsyfiog, Saturday, 24 October

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

Average high11°C

Average low6°C

Average rainfall4.5 mm

Chance of rain50%

Warmest on record+15° (1995)

Coldest on record-2° (1964)

Sun, 25+6 ° /11 °

4.1

+11 °

Cwmsyfiog, Sunday, 25 October

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

Average high11°C

Average low6°C

Average rainfall4.1 mm

Chance of rain48%

Warmest on record+15° (2013)

Coldest on record-3° (2010)

Mon, 26+6 ° /11 °

3.3

+11 °

Cwmsyfiog, Monday, 26 October

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

Average high11°C

Average low6°C

Average rainfall3.3 mm

Chance of rain48%

Warmest on record+16° (2005)

Coldest on record-1° (1997)

Tue, 27+6 ° /11 °

3.8

+11 °

Cwmsyfiog, Tuesday, 27 October

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

Average high11°C

Average low6°C

Average rainfall3.8 mm

Chance of rain48%

Warmest on record+17° (2005)

Coldest on record-3° (2003)

Wed, 28+6 ° /11 °

4.6

+11 °

Cwmsyfiog, Wednesday, 28 October

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

Average high11°C

Average low6°C

Average rainfall4.6 mm

Chance of rain50%

Warmest on record+17° (2014)

Coldest on record-1° (2012)

Thu, 29+5 ° /11 °

3.8

+11 °

Cwmsyfiog, Thursday, 29 October

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

Average high11°C

Average low5°C

Average rainfall3.8 mm

Chance of rain45%

Warmest on record+15° (2022)

Coldest on record-3° (2008)

Fri, 30+6 ° /11 °

4.3

+11 °

Cwmsyfiog, Friday, 30 October

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

Average high11°C

Average low6°C

Average rainfall4.3 mm

Chance of rain55%

Warmest on record+16° (2001)

Coldest on record-2° (1983)

Sat, 31+6 ° /11 °

5.4

+11 °

Cwmsyfiog, Saturday, 31 October

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

Average high11°C

Average low6°C

Average rainfall5.4 mm

Chance of rain58%

Warmest on record+18° (2014)

Coldest on record-3° (1992)

Sun, 01+6 ° /11 °

+11 °

Cwmsyfiog, Sunday, 1 November

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

Average high11°C

Average low6°C

Average rainfall4 mm

Chance of rain50%

Warmest on record+15° (2014)

Coldest on record-1° (2008)

Mon, 02+5 ° /10 °

5.1

+10 °

Cwmsyfiog, Monday, 2 November

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

Average high10°C

Average low5°C

Average rainfall5.1 mm

Chance of rain57%

Warmest on record+15° (2005)

Coldest on record-3° (2006)

Tue, 03+5 ° /10 °

3.3

+10 °

Cwmsyfiog, Tuesday, 3 November

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

Average high10°C

Average low5°C

Average rainfall3.3 mm

Chance of rain48%

Warmest on record+14° (1979)

Coldest on record-3° (2006)

Wed, 04+4 ° /9 °

2.7

+9 °

Cwmsyfiog, Wednesday, 4 November

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

Average high9°C

Average low4°C

Average rainfall2.7 mm

Chance of rain38%

Warmest on record+14° (1978)

Coldest on record-3° (2006)

Thu, 05+4 ° /9 °

3.2

+9 °

Cwmsyfiog, Thursday, 5 November

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

Average high9°C

Average low4°C

Average rainfall3.2 mm

Chance of rain40%

Warmest on record+14° (1978)

Coldest on record-2° (1965)

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 Cwmsyfiog 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 Cwmsyfiog 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.