Weather in Gillette in May

General weather information about Gillette

Average annual temperature is 8.3 °C

Absolute maximum temperature: 37.0 °C

Absolute minimum temperature: -30.7 °C

Number of sunny days: 197 days

Number of rainy days: 113 days

Number of snow days: 55 days

* Weather data for Gillette 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)	8.1	7.8	12.8	21.6	27.3	31.1	37.0	36.3	33.1	24.1	17.5	14.9
Average daytime temperature (°C)	0.6	1.3	2.7	11.6	21.1	23.0	29.1	28.4	23.8	13.9	10.4	6.2
Average temperature (°C)	-3.4	-4.5	-3.0	4.8	14.7	16.8	22.2	21.6	16.9	7.2	4.2	0.8
Average night temperature (°C)	-6.2	-8.4	-7.2	-0.3	8.9	11.8	15.7	15.8	11.6	2.5	-0.2	-2.7
Absolute minimum temperature (°C)	-28.5	-30.7	-13.7	-10.0	2.9	8.1	7.7	10.1	8.2	-13.3	-13.2	-12.4

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

Months with the longest average daylight duration in Gillette:

The largest precipitation sum in Gillette is at

May — 77(mm)

June — 88(mm)

September — 87(mm)

When is the best time to visit Gillette?

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

What is the weather like in Gillette?

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

How many sunny days does Gillette have?

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