The month ahead in Siadar Iarach: daytime temperatures averaging +12.2° and +9.8° overnight — that is 0.9° above the climate average for October. Rain is expected on 7 days (around 79 mm), against a normal of 9 days and 50 mm. The warmest day should be 21 October (+14.7°), the coolest 8 October (+5°).
+12.2°/+9.8°
Average day / night
+0.9°
Above average
7 / 9
Wet days / normal
79 mm
Rainfall this month
Ten-day blocks against the climate average
Period
Forecast (day)
Average
Difference
8 October – 17 October
+11.8°
+11.6°
+0.2°
18 October – 27 October
+13°
+10.7°
+2.3°
28 October – 6 November
near average
+9.9°
—
October records over 66 years
+18.6°13 October 1990All-time high
+0.3°20 October 1998All-time low
Climate averages and records are calculated from the nearest reference point — Stornoway / Steòrnabhagh (21.9 km away).
Fri, 09+10 ° /13 °13.6
+13 °
Siadar Iarach, Friday, 9 October
Rain. High 13°C, low 10°C.
Pressure996 mb
Wind23 mph W
Humidity70%
Visibility3.8 mi
Dew point6°C
Sat, 10+10 ° /12 °15.7
+12 °
Siadar Iarach, Saturday, 10 October
Rain. High 12°C, low 10°C.
Pressure999 mb
Wind27 mph NW
Humidity72%
Visibility4.6 mi
Dew point6°C
Sun, 11+10 ° /11 °0
+11 °
Siadar Iarach, Sunday, 11 October
Overcast. High 11°C, low 10°C.
Pressure1012 mb
Wind6 mph NW
Humidity67%
Visibility6.2 mi
Dew point5°C
Mon, 12+10 ° /14 °3.5
+14 °
Siadar Iarach, Monday, 12 October
Light rain. High 14°C, low 10°C.
Pressure1003 mb
Wind23 mph S
Humidity92%
Visibility—
Dew point12°C
Tue, 13+11 ° /15 °18.5
+15 °
Siadar Iarach, Tuesday, 13 October
Rain. High 15°C, low 11°C.
Pressure1007 mb
Wind32 mph S
Humidity74%
Visibility—
Dew point8°C
Wed, 14+10 ° /13 °16.7
+13 °
Siadar Iarach, Wednesday, 14 October
Rain. High 13°C, low 10°C.
Pressure1012 mb
Wind36 mph S
Humidity66%
Visibility—
Dew point5°C
Thu, 15+9 ° /11 °2.5
+11 °
Siadar Iarach, Thursday, 15 October
Light rain. High 11°C, low 9°C.
Pressure1016 mb
Wind15 mph W
Humidity68%
Visibility—
Dew point5°C
Fri, 16+8 ° /10 °0
+10 °
Siadar Iarach, Friday, 16 October
Mainly clear. High 10°C, low 8°C.
Pressure1029 mb
Wind10 mph SE
Humidity64%
Visibility—
Dew point3°C
Sat, 17+8 ° /10 °0
+10 °
Siadar Iarach, Saturday, 17 October
Clear sky. High 10°C, low 8°C.
Pressure1020 mb
Wind16 mph S
Humidity60%
Visibility—
Dew point2°C
Sun, 18+9 ° /12 °0
+12 °
Siadar Iarach, Sunday, 18 October
Overcast. High 12°C, low 9°C.
Pressure1018 mb
Wind10 mph NE
Humidity84%
Visibility—
Dew point8°C
Mon, 19+12 ° /13 °0
+13 °
Siadar Iarach, Monday, 19 October
Mainly clear. High 13°C, low 12°C.
Pressure1017 mb
Wind12 mph SE
Humidity83%
Visibility—
Dew point10°C
Tue, 20+12 ° /13 °0.5
+13 °
Siadar Iarach, Tuesday, 20 October
Light rain. High 13°C, low 12°C.
Pressure1017 mb
Wind13 mph SE
Humidity82%
Visibility—
Dew point10°C
Wed, 21+12 ° /15 °0
+15 °
Siadar Iarach, Wednesday, 21 October
Overcast. High 15°C, low 12°C.
Pressure1016 mb
Wind24 mph SE
Humidity72%
Visibility—
Dew point9°C
Thu, 22+11 ° /13 °0
+13 °
Siadar Iarach, Thursday, 22 October
Overcast. High 13°C, low 11°C.
Pressure1020 mb
Wind17 mph SE
Humidity81%
Visibility—
Dew point9°C
Fri, 23+10 ° /12 °0
+12 °
Siadar Iarach, Friday, 23 October
Clear sky. High 12°C, low 10°C.
Pressure1025 mb
Wind13 mph SE
Humidity71%
Visibility—
Dew point7°C
Days 17 onward are based on 60-year climate statistics
Sat, 24+7 ° /11 °3.4
+11 °
Siadar Iarach, Saturday, 24 October
Climate average for this date — the mean of the last 60 years.
Average high11°C
Average low7°C
Average rainfall3.4 mm
Chance of rain60%
Warmest on record+15° (1995)
Coldest on record+2° (2002)
Sun, 25+7 ° /10 °4.4
+10 °
Siadar Iarach, Sunday, 25 October
Climate average for this date — the mean of the last 60 years.
Average high10°C
Average low7°C
Average rainfall4.4 mm
Chance of rain57%
Warmest on record+14° (1975)
Coldest on record+1° (1992)
Mon, 26+7 ° /11 °4.1
+11 °
Siadar Iarach, Monday, 26 October
Climate average for this date — the mean of the last 60 years.
Average high11°C
Average low7°C
Average rainfall4.1 mm
Chance of rain60%
Warmest on record+14° (2005)
Coldest on record+2° (1962)
Tue, 27+7 ° /11 °3.8
+11 °
Siadar Iarach, Tuesday, 27 October
Climate average for this date — the mean of the last 60 years.
Average high11°C
Average low7°C
Average rainfall3.8 mm
Chance of rain73%
Warmest on record+17° (2005)
Coldest on record+1° (1970)
Wed, 28+7 ° /10 °3.4
+10 °
Siadar Iarach, Wednesday, 28 October
Climate average for this date — the mean of the last 60 years.
Average high10°C
Average low7°C
Average rainfall3.4 mm
Chance of rain65%
Warmest on record+16° (2005)
Coldest on record+0° (2008)
Thu, 29+7 ° /10 °3.5
+10 °
Siadar Iarach, Thursday, 29 October
Climate average for this date — the mean of the last 60 years.
Average high10°C
Average low7°C
Average rainfall3.5 mm
Chance of rain50%
Warmest on record+14° (2009)
Coldest on record+2° (1962)
Fri, 30+7 ° /11 °5.1
+11 °
Siadar Iarach, Friday, 30 October
Climate average for this date — the mean of the last 60 years.
Average high11°C
Average low7°C
Average rainfall5.1 mm
Chance of rain73%
Warmest on record+15° (2009)
Coldest on record+2° (1990)
Sat, 31+8 ° /10 °4.4
+10 °
Siadar Iarach, Saturday, 31 October
Climate average for this date — the mean of the last 60 years.
Average high10°C
Average low8°C
Average rainfall4.4 mm
Chance of rain63%
Warmest on record+15° (2014)
Coldest on record+3° (2019)
Sun, 01+7 ° /10 °3.2
+10 °
Siadar Iarach, Sunday, 1 November
Climate average for this date — the mean of the last 60 years.
Average high10°C
Average low7°C
Average rainfall3.2 mm
Chance of rain65%
Warmest on record+14° (2007)
Coldest on record+3° (2003)
Mon, 02+7 ° /10 °3
+10 °
Siadar Iarach, Monday, 2 November
Climate average for this date — the mean of the last 60 years.
Average high10°C
Average low7°C
Average rainfall3 mm
Chance of rain50%
Warmest on record+14° (1971)
Coldest on record+1° (1998)
Tue, 03+7 ° /10 °3.3
+10 °
Siadar Iarach, Tuesday, 3 November
Climate average for this date — the mean of the last 60 years.
Average high10°C
Average low7°C
Average rainfall3.3 mm
Chance of rain63%
Warmest on record+14° (2011)
Coldest on record+2° (1985)
Wed, 04+6 ° /10 °3
+10 °
Siadar Iarach, Wednesday, 4 November
Climate average for this date — the mean of the last 60 years.
Average high10°C
Average low6°C
Average rainfall3 mm
Chance of rain60%
Warmest on record+13° (1978)
Coldest on record+2° (1968)
Thu, 05+6 ° /9 °2.7
+9 °
Siadar Iarach, Thursday, 5 November
Climate average for this date — the mean of the last 60 years.
Average high9°C
Average low6°C
Average rainfall2.7 mm
Chance of rain53%
Warmest on record+14° (2003)
Coldest on record+1° (2017)
Fri, 06+7 ° /10 °3.7
+10 °
Siadar Iarach, Friday, 6 November
Climate average for this date — the mean of the last 60 years.
Average high10°C
Average low7°C
Average rainfall3.7 mm
Chance of rain58%
Warmest on record+13° (2025)
Coldest on record+0° (1984)
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 Siadar Iarach 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 Siadar Iarach 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.