Best year time to visit Gretna

General weather information about Gretna

Average annual temperature is 9.6 °C

Absolute maximum temperature: 32.2 °C

Absolute minimum temperature: -29.5 °C

Number of sunny days: 150 days

Number of rainy days: 189 days

Number of snow days: 26 days

Look at detailed online map of Gretna

* Weather data for Gretna Canada is based on climate observations for 2026 year

Gretna air temperature forecast for each month

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Absolute maximum temperature (°C)	7.3	11.6	9.9	25.7	28.1	30.4	31.1	27.1	32.2	27.7	14.4	9.8
Average daytime temperature (°C)	1.5	2.5	4.3	13.8	18.8	23.4	26.8	24.3	23.2	16.1	7.1	4.7
Average temperature (°C)	-1.7	-2.8	0.3	8.1	12.9	18.8	22.3	20.1	18.3	12.5	3.5	1.8
Average night temperature (°C)	-4.8	-7.4	-3.2	3.2	7.3	14.5	18.2	16.4	14.1	9.6	0.1	-0.7
Absolute minimum temperature (°C)	-13.5	-29.5	-10.5	-6.7	2.7	10.4	12.9	11.1	8.4	-1.7	-5.4	-8.3

Gretna monthly weather indicators

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Daylight maximum duration (h)	9.0	11.0	12.0	14.0	15.0	15.0	15.0	14.0	13.0	11.0	10.0	9.0
Daylight mean duration (h)	9.3	10.5	11.9	13.5	14.8	15.4	15.1	14.0	12.5	11.0	9.6	8.9
Daylight minimum duration (h)	8.0	9.0	11.0	12.0	14.0	15.0	14.0	13.0	11.0	10.0	9.0	8.0
Sunshine mean duration (h)	3.2	5.5	6.2	8.9	11.5	10.4	11.0	10.6	9.8	5.3	5.8	2.9
Precipitation (mm)	100	69	83	111	60	120	128	103	15	56	46	109
Sunny days	8	11	15	13	21	8	7	8	22	14	13	10
Rainy days	15	11	9	16	10	22	24	23	8	17	15	19
Snow days	8	6	7	1	0	0	0	0	0	0	2	2

Gretna - weather forecast by months

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

Best time to visit Gretna:

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

May — 11.5(h)
June — 10.4(h)
July — 11.0(h)
August — 10.6(h)
September — 9.8(h)

Months with the longest average daylight duration in Gretna:

June — 15.4(h)

The largest precipitation sum in Gretna is at

April — 111(mm)

June — 120(mm)

July — 128(mm)

December — 109(mm)

Weather forecast in the closest to Gretna admin centers