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Weather in Castleblayney today: the honest forecast

Castleblayney

Baltic.

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4°C

Clear Clear sky

Feels like
3°C
Wind
5 km/h
Humidity
88%
Rainfall
0 mm

Sunrise 07:58 Sunset 18:26

Air quality Good

Updated 22:40 on 17/10/2026. Don’t be expecting miracles.

Tomorrow in Castleblayney

Sunday 18/10/2026

Overcast, but it’s grand. We’ve seen worse.

Clouds, high of 13°C, low of 3°C. 0 mm of rain, 0% chance. Wind up to 8 km/h.

The day after in Castleblayney

Monday 19/10/2026

Mizzlin’. The most Irish word for the most Irish weather.

Rain, high of 12°C, low of 3°C. 0.3 mm of rain, 61% chance. Wind up to 16 km/h.

Yellow warning: the sky’s in a mood. Not a crisis, but the washing can stay in.

Yellow

Small Craft warning from Belfast Lough to Wicklow Head to Roche's Point

From 19/10/2026 07:00 until 19/10/2026 23:59

Northeasterly or cyclonic variable winds, veering southeasterly will reach force 6 at times.

Weather warnings: Met Éireann. Shown as issued. met.ie/warnings Northern Ireland: Met Office, metoffice.gov.uk.

Honest Weather’s verdicts for Castleblayney, tomorrow

  • Washing9/10 for washingEvery sheet in the house. Go.
  • Barbecue8/10 for barbecueGood enough for sausages and a few cans.
  • A walk10/10 for a walkOut the door, quick, before it changes its mind.

Verdicts by Honest Weather · honestweather.ie

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Next 24 hours in Castleblayney

Sun’s hiding like it owes us money.

In 3-hour steps.

  1. 01:00 4° 0% chance of rain
  2. 04:00 4° 0% chance of rain
  3. 07:00 3° 0% chance of rain
  4. 10:00 8° 0% chance of rain
  5. 13:00 13° 0% chance of rain
  6. 16:00 12° 0% chance of rain
  7. 19:00 8° 0% chance of rain
  8. 22:00 6° 0% chance of rain

The days ahead in Castleblayney

  1. Sun 18/10 Clouds 13° / 3° 0 mm, 0% Sky looks like it’s hungover.
  2. Mon 19/10 Rain 12° / 3° 0.3 mm, 61% Weather’s a mood. Today’s a bad one.
  3. Tue 20/10 Clouds 12° / 8° 0 mm, 2% A mild day. Don’t waste it indoors.
  4. Wed 21/10 Rain 10° / 6° 3.1 mm, 100% Wet enough to drown a feckin’ duck.
  5. Thu 22/10 Rain 11° / 5° 0.4 mm, 58% Only in Ireland can ya need sunglasses and a raincoat in the one hour.

About the weather in Castleblayney

Castleblayney is in County Monaghan, in the north. It is a mix of exposed coast and sheltered inland valleys, so the weather can vary a lot over a short distance.

Castleblayney is in County Monaghan, at about 54.12°N, 6.74°W. The closest places we cover are Carrickmacross (16 km), Monaghan (21 km), Cootehill (23 km).

Across Ireland, spring is cool and bright with showers, summer highs are typically in the high teens with long evenings, autumn is the wettest and windiest stretch as the Atlantic fronts return, and winter is mild for the latitude with frost on clear nights. Rain can arrive in any month.

Quick answers for Castleblayney

What is the weather in Castleblayney right now?
It is 4°C in Castleblayney with clear sky, feeling like 3°C, with wind at 5 km/h.
Will it rain in Castleblayney tomorrow?
Rain is unlikely tomorrow in Castleblayney (a 0% chance).
What will the temperature be in Castleblayney tomorrow?
A high of 13°C and a low of 3°C, with wind around 8 km/h.
What time is sunset in Castleblayney today?
Sunrise is at 07:58 and sunset at 18:26.

Weather nearby

Beaches, hills and venues nearby

All weather in County Monaghan