Best time to visit Helena

The best times to visit Helena, Montana are in June, July and August based on our default weather conditions. Find out more about the weather and update your preferences to see which months best match.

Helena by month

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

Recommended for Montana

  • Save on river cruises in 2025 with Avalon Waterways
  • Book river cruises in Europe, Asia, Africa & Americas
  • Filter deals by promotion, month, destination & more

Expires at 23:59 on Wednesday 31st Dec 2025 · View all Avalon Waterways offers

When is the best time to visit Helena?

The best times to visit Helena, Montana are in June, July and August based on the following average weather conditions.

Maximum daytime temperature = 22 - 30°C [remove]
Daily hours of sunshine = 8 hours or more [remove]

Change the criteria to reflect your weather preferences.

Change criteria

Max Day Temperature (°C)

  • -1°C maximum daytime temperature in January in Helena-1
    Jan
  • 3°C maximum daytime temperature in February in Helena3
    Feb
  • 6°C maximum daytime temperature in March in Helena6
    Mar
  • 12°C maximum daytime temperature in April in Helena12
    Apr
  • 18°C maximum daytime temperature in May in Helena18
    May
  • 23°C maximum daytime temperature in June in Helena23
    Jun
  • 28°C maximum daytime temperature in July in Helena28
    Jul
  • 28°C maximum daytime temperature in August in Helena28
    Aug
  • 20°C maximum daytime temperature in September in Helena20
    Sep
  • 14°C maximum daytime temperature in October in Helena14
    Oct
  • 5°C maximum daytime temperature in November in Helena5
    Nov
  • 0°C maximum daytime temperature in December in Helena0
    Dec

Hours of Sunshine (daily)

Best time to visit

The weather guide for Montana (Helena) shows long term weather averages processed from data supplied by CRU (University of East Anglia) & today's weather forecast provided by meteoblue. Find out more about our data sources.

Metric (°C / mm)  |  Imperial (°F / inches)

Back to top

Related posts

Popular travel offers

Explore holiday destinations

More holidays

Save with latest deals & discounts

More deals

Airport parking

More parking

Airport lounges

More lounges

Back to Holiday Weather Top ^