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Weather in Johnstown · MET Norway forecast + Met Éireann averages

Weather in Johnstown

A typical November day reaches 11°C and drops to 4°C at night: the forecast for Johnstown is set against that. In December, the normal shifts to highs of 8°C and lows of 2°C. Over a whole year, the typical afternoon climbs from 8°C in January to 20°C in July.

Winter 8°/2°CSpring 13°/5°CSummer 19°/11°CAutumn 14°/7°C
Right now
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The forecast isn’t available just now.
Sunrise 07:30 · sunset 16:49

The forecast service didn’t answer, so there is no forecast for Johnstown just now. The town’s normal weather is on its Climate page.

What stands out about Johnstown’s weather

Read from the Met Éireann 30-year averages, against Irish towns. Each one opens the full story on the Climate page.

Climate →
Colder winter nights than most Irish townsJanuary nights average 2.0°C, colder than 90% of Irish towns.Bigger swings between summer and winter than most Irish townsA spread of 18.0°C from January nights to July afternoons, wider than 94% of Irish towns.
A normal year

Where today sits in Johnstown’s year

Typical highs and lows month by month, from the Met Éireann 1991–2020 averages.

Full climate →
Winter
8° / 2°
224 mm of rain
Spring
13° / 5°
180 mm of rain
Summer
19° / 11°
217 mm of rain
Autumn now
14° / 7°
261 mm of rain, the wettest season
Best months to be outside
JunJulAugSep
Highs of 17–27°C and nights of 8°C or more
When is it wettest?November, with 94 mm.Is it warmer than it used to be?+0.2°C on the 1981–2010 averages.What is each month like?Highs, lows and rain for all 12.

Warnings and more

This page doesn’t repeat official warnings: check Met Éireann’s weather warnings before travelling in bad weather.

Met Éireann weather warningsStatus yellow, orange and red warnings for wind, rain, snow and ice, thunderstorms, fog and high temperatures, county by county, from Ireland’s national meteorological service.Rivers, tides and flood mapsfloodinfo.ie, from the Office of Public Works: live river and tide levels and the national flood maps.Johnstown’s climateNormal temperatures and rain month by month, from Met Éireann’s 30-year averages.

Forecast: Data from MET Norway (Norwegian Meteorological Institute), CC BY 4.0; wind in km/h and times in Irish time by us. Normals: Met Éireann 1991–2020 averages for the town (Copyright Met Éireann, CC BY 4.0). Sunrise and sunset are calculated from the town’s position.

Contains Central Statistics Office (CSO) data, Census 2022, and Tailte Éireann boundaries (CSO Urban Areas, Small Areas, local electoral areas, constituencies), under Creative Commons Attribution 4.0 (CC BY 4.0).