Weather on July 20 at Indiana Dunes

Indiana Dunes National Park

INMidwest600 ft elevation
Avg High84°F
Avg Low66°F
Warmest197786°F
Coldest200962°F

Based on 54 years of data from Gary, IN

Planning Your Visit

July 20th in Indiana Dunes National Park (via Gary, IN) typically brings warm summer weather, with average highs around 84°F and lows near 66°F. Over 54 years of records, the warmest July 20th was in 1977 (86°F average), while the coldest was 2009 (62°F) — a 24°F range across recorded history. Rain or other precipitation has occurred on about 28% of July 20th dates historically, with the wettest July 20th recording 4.55" of rain. Temperatures on this date have remained relatively stable over the past several decades.

Temperatures on this date have remained relatively stable over the past several decades.

Planning for July 20th in Indiana Dunes? Stay hydrated and seek shade during peak afternoon hours.

Year by Year History

YearHighLowPrecipSnow
202581°F70°F--0"
202476°F55°F0"0"
202379°F64°F0"0"
202288°F74°F0"0"
202179°F59°F0"0"
202082°F65°F----
201994°F75°F----
201886°F66°F0"--
201780°F67°F2.59"0"
201687°F68°F0"0"
201585°F61°F0"0"
201475°F56°F0"0"
201394°F73°F0"0"
201281°F68°F0.1"0"
201183°F72°F0.08"0"
201082°F67°F0.05"0"
200970°F54°F0"0"
200878°F67°F3.38"0"
200777°F60°F0"0"
200688°F69°F3.51"0"
200587°F64°F0"0"
200483°F64°F0"0"
200380°F63°F0"0"
200282°F64°F0"0"
200189°F70°F0"0"
200068°F57°F0"0"
199988°F70°F0"0"
199888°F72°F0"0"
199786°F70°F--0"
199675°F60°F0"0"
199575°F66°F--0"
199485°F66°F0.05"0"
199384°F50°F0"0"
199280°F64°F0.76"0"
199193°F70°F0"0"
199086°F66°F4.55"0"
198973°F64°F1.83"0"
198882°F65°F0.08"0"
198794°F75°F0"0"
198693°F70°F0.69"0"
198583°F67°F0.03"0"
198484°F69°F0"0"
198397°F63°F1.98"0"
198283°F64°F0"0"
1980101°F62°F0"0"
197980°F54°F0"0"
197893°F70°F0.08"0"
197795°F77°F0"0"
197690°F72°F0"0"
197587°F66°F0"0"
197491°F65°F0"0"
197387°F70°F0"0"
197292°F73°F0"0"
197179°F48°F0"0"

July 20 at Nearby Parks

Holiday Weather at Indiana Dunes

Official NPS WebsiteVisit nps.gov/indu for park information, alerts, and reservations

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