Best year time to visit Johnstown

General weather information about Johnstown

Average annual temperature is 9.8 °C

Absolute maximum temperature: 25.9 °C

Absolute minimum temperature: -5.1 °C

Number of sunny days: 76 days

Number of rainy days: 287 days

Number of snow days: 2 days

Look at detailed online map of Johnstown

* Weather data for Johnstown Ireland is based on climate observations for 2026 year

Johnstown air temperature forecast for each month

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Absolute maximum temperature (°C)	11.5	11.7	13.8	16.8	18.7	25.5	19.6	22.1	25.9	20.8	12.3	11.9
Average daytime temperature (°C)	6.8	8.4	8.3	11.2	15.4	19.7	16.5	17.2	17.4	13.3	8.5	7.9
Average temperature (°C)	4.6	6.1	5.8	7.9	11.7	15.9	13.6	14.1	14.3	10.7	6.4	6.2
Average night temperature (°C)	2.6	3.9	3.2	4.7	8.0	12.1	10.7	11.4	11.0	8.0	4.2	4.1
Absolute minimum temperature (°C)	-5.1	-1.9	-2.6	-1.0	3.6	7.8	7.2	7.2	3.3	1.2	-1.0	-4.0

Johnstown monthly weather indicators

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Daylight maximum duration (h)	8.0	10.0	12.0	14.0	16.0	16.0	16.0	15.0	13.0	11.0	9.0	7.0
Daylight mean duration (h)	8.2	9.9	11.9	14.0	15.9	16.9	16.4	14.7	12.7	10.6	8.7	7.6
Daylight minimum duration (h)	7.0	8.0	10.0	12.0	15.0	16.0	15.0	13.0	11.0	9.0	7.0	7.0
Sunshine mean duration (h)	3.3	3.3	3.9	7.2	10.2	11.7	8.7	7.5	6.9	5.2	4.4	1.9
Precipitation (mm)	104	39	150	99	49	64	156	104	149	160	74	166
Sunny days	6	11	2	9	15	13	0	1	5	7	4	3
Rainy days	24	17	28	21	16	17	31	30	25	24	26	28
Snow days	1	0	1	0	0	0	0	0	0	0	0	0

Johnstown - weather forecast by months

Johnstown weather in january Johnstown weather in february Johnstown weather in march Johnstown weather in april Johnstown weather in may Johnstown weather in june Johnstown weather in july Johnstown weather in august Johnstown weather in september Johnstown weather in october Johnstown weather in november Johnstown weather in december

Best time to visit Johnstown:

The best time to visit Johnstown during the most sunny months:

May — 10.2(h)
June — 11.7(h)
July — 8.7(h)

Months with the longest average daylight duration in Johnstown:

May — 15.9(h)
June — 16.9(h)
July — 16.4(h)

The largest precipitation sum in Johnstown is at

March — 150(mm)

July — 156(mm)

September — 149(mm)

October — 160(mm)

December — 166(mm)

Weather forecast in the closest to Johnstown admin centers