Best year time to visit Grafton Heights

General weather information about Grafton Heights

Average annual temperature is 13.5 °C

Absolute maximum temperature: 37.3 °C

Absolute minimum temperature: -10.2 °C

Number of sunny days: 174 days

Number of rainy days: 187 days

Number of snow days: 4 days

* Weather data for Grafton Heights United States is based on climate observations for 2026 year

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Absolute maximum temperature (°C)	15.3	22.1	19.8	30.0	29.2	34.2	35.5	33.8	37.3	27.7	22.1	16.7
Average daytime temperature (°C)	8.9	10.1	11.5	20.1	22.4	26.9	30.3	29.2	25.5	20.1	12.2	9.4
Average temperature (°C)	4.9	5.0	6.0	13.8	16.0	20.5	24.5	23.6	20.2	14.6	6.9	5.3
Average night temperature (°C)	1.9	0.8	1.3	8.7	10.0	15.2	20.1	19.0	15.8	10.2	2.7	1.9
Absolute minimum temperature (°C)	-3.9	-10.2	-5.0	-0.2	3.9	11.0	17.5	14.9	10.6	5.2	-5.8	-3.9

The best time to visit Grafton Heights during the most sunny months:

The largest precipitation sum in Grafton Heights is at

April — 128(mm)

June — 124(mm)

July — 136(mm)

September — 130(mm)

December — 184(mm)

When is the best time to visit Grafton Heights?

The historical weather data above shows the warmest, sunniest and driest months to help you choose the best time to visit Grafton Heights.

What is the weather like in Grafton Heights?

See average temperature, rainfall and daylight hours for Grafton Heights by month in the table above.

How many sunny days does Grafton Heights have?

The monthly weather statistics above show sunshine and rainfall patterns for Grafton Heights throughout the year.