McHenry Weather in May

Thinking of visiting McHenry in May? Expect pleasant temperatures reaching 21°C (70°F) during the day, dropping to 9°C (48°F) at night, and note that quite a bit of rainfall is likely.

Rainfall in McHenry in May

Historically, approximately 13 days this month are expected to have rain, averaging 103 mm (4.1 in). When it rains this month, it tends to come down fairly heavily. Showers can be substantial even if they don't last all day.

Temperature in McHenry in May

May in McHenry sees highs of 21°C (70°F) and lows of 9°C (48°F) overnight. A light jacket or extra layer can be useful, especially outside the warmest hours of the day. Nights fall to 9°C (48°F), which is cold enough to feel it indoors too. A good thick duvet makes all the difference for a comfortable night's sleep.

Sunshine in McHenry in May

The city usually sees around 282 hours of sunlight, indicating many sunny days , a great month for sightseeing.

If you prefer enjoying temperate temperatures and rain-free days, September typically offers the best circumstances. If you're seeking pleasant, dry and sunny weather somewhere else in the world, our weather planner can help you explore other options.