Average Summer and Winter Temperatures Worldwide

Temperatures vary greatly by region. General averages for the Northern Hemisphere:

Summer (June–August)

• Temperate zones (Europe, N. America, Asia): 18–25 °C (64–77 °F)
• Subtropical zones (Mediterranean, S. US, parts of S. America): 25–35 °C (77–95 °F)
• Tropical zones (equatorial regions): consistently above 30 °C (86 °F)

Winter (December–February)

• Temperate zones: 0–5 °C (32–41 °F), occasional freezes
• Continental zones (Russia, Canada, northern US): below 0 °C (32 °F), snowfall
• Polar zones (Arctic, Antarctic): below −20 °C (−4 °F), extremes much lower

Local microclimates and geography cause deviations from these averages.