Best year time to visit Grom

General weather information about Grom

Average annual temperature is 9.5 °C

Absolute maximum temperature: 32.9 °C

Absolute minimum temperature: -7.5 °C

Number of sunny days: 138 days

Number of rainy days: 206 days

Number of snow days: 21 days

Look at detailed online map of Grom

* Weather data for Grom Poland is based on climate observations for 2026 year

Grom air temperature forecast for each month

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Absolute maximum temperature (°C)	14.4	8.0	15.4	19.9	24.6	29.3	31.2	32.9	28.2	22.6	12.3	7.4
Average daytime temperature (°C)	3.3	3.1	7.0	11.9	18.0	22.8	23.4	24.3	22.6	12.6	5.0	2.4
Average temperature (°C)	1.7	0.6	3.1	7.6	13.1	18.1	18.9	20.0	17.8	9.6	2.7	0.7
Average night temperature (°C)	-0.2	-2.0	-0.5	3.2	7.2	12.5	13.8	15.8	13.1	6.5	0.3	-1.3
Absolute minimum temperature (°C)	-7.0	-5.9	-5.0	-3.6	0.9	5.1	11.3	10.9	9.7	1.9	-7.5	-7.1

Grom 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	15.0	16.0	17.0	16.0	15.0	13.0	11.0	9.0	7.0
Daylight mean duration (h)	8.1	9.8	11.9	14.0	15.9	17.0	16.5	14.8	12.7	10.6	8.6	7.6
Daylight minimum duration (h)	7.0	8.0	10.0	13.0	15.0	16.0	15.0	13.0	11.0	9.0	7.0	7.0
Sunshine mean duration (h)	1.3	4.3	6.6	8.0	11.3	12.1	12.4	9.9	10.0	4.5	3.2	1.5
Precipitation (mm)	70	50	50	56	22	44	52	54	24	86	65	79
Sunny days	11	13	8	10	24	15	5	9	20	6	11	6
Rainy days	15	12	19	19	7	15	26	22	10	25	14	22
Snow days	5	3	4	1	0	0	0	0	0	0	5	3

Grom - weather forecast by months

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

Best time to visit Grom:

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

May — 11.3(h)
June — 12.1(h)
July — 12.4(h)
August — 9.9(h)
September — 10.0(h)

Months with the longest average daylight duration in Grom:

May — 15.9(h)
June — 17.0(h)
July — 16.5(h)

The largest precipitation sum in Grom is at

January — 70(mm)

October — 86(mm)

December — 79(mm)

Weather forecast in the closest to Grom admin centers