When to go · Helena
Helena, month by month
The best months for Helena: Jun, Jul, Aug, Sep. Months to avoid: Jan, Feb, Dec.
Month by month
- JanuaryAvoidListed as a month to avoid: Dec–Feb (cold, snow, some seasonal closures).-1 °C (30 °F) / -11 °C (12 °F), 8 rain days30 °F (-1 °C) / 12 °F (-11 °C), 8 rain daysCrowds: Low
- FebruaryAvoidListed as a month to avoid: Dec–Feb (cold, snow, some seasonal closures).2 °C (36 °F) / -9 °C (16 °F), 7 rain days36 °F (2 °C) / 16 °F (-9 °C), 7 rain daysCrowds: Low · 1 festival or holiday
- MarchGoodOutside the best window (Jun–Sep). Across United States: Spring break fills Florida beaches and parks; the desert parks come into season.8 °C (46 °F) / -4 °C (25 °F), 8 rain days46 °F (8 °C) / 25 °F (-4 °C), 8 rain daysCrowds: Medium · 2 festivals or holidays
- AprilGoodOutside the best window (Jun–Sep). Across United States: Good month for the Southwest, Washington cherry blossoms, the South; mountain roads still closed.13 °C (55 °F) / 0 °C (32 °F), 9 rain days55 °F (13 °C) / 32 °F (0 °C), 9 rain daysCrowds: Medium · 1 festival or holiday
- MayGoodOutside the best window (Jun–Sep). Across United States: Warm and green; Memorial Day (last Monday) opens the summer season; timed-entry systems start at some parks.19 °C (66 °F) / 5 °C (41 °F), 11 rain days66 °F (19 °C) / 41 °F (5 °C), 11 rain daysCrowds: Medium · 1 festival or holiday
- JuneGreatInside Helena's best window: Jun–Sep.24 °C (75 °F) / 9 °C (48 °F), 10 rain days75 °F (24 °C) / 48 °F (9 °C), 10 rain daysCrowds: High
- JulyGreatInside Helena's best window: Jun–Sep.30 °C (86 °F) / 13 °C (55 °F), 7 rain days86 °F (30 °C) / 55 °F (13 °C), 7 rain daysCrowds: High · 1 festival or holiday
- AugustGreatInside Helena's best window: Jun–Sep.29 °C (84 °F) / 12 °C (54 °F), 7 rain days84 °F (29 °C) / 54 °F (12 °C), 7 rain daysCrowds: High
- SeptemberGreatInside Helena's best window: Jun–Sep.23 °C (73 °F) / 7 °C (45 °F), 7 rain days73 °F (23 °C) / 45 °F (7 °C), 7 rain daysCrowds: Medium · 1 festival or holiday
- OctoberGoodOutside the best window (Jun–Sep). Across United States: Best all-round month: New England foliage, desert parks, cooler cities. High roads start closing late in the month.14 °C (57 °F) / 1 °C (34 °F), 7 rain days57 °F (14 °C) / 34 °F (1 °C), 7 rain daysCrowds: Medium
- NovemberMixedOutside the best window (Jun–Sep). Across United States: Quiet between holidays; Thanksgiving week is the busiest travel period of the year.5 °C (41 °F) / -5 °C (23 °F), 8 rain days41 °F (5 °C) / 23 °F (-5 °C), 8 rain daysCrowds: Medium · 1 festival or holiday
- DecemberAvoidListed as a month to avoid: Dec–Feb (cold, snow, some seasonal closures).0 °C (32 °F) / -10 °C (14 °F), 8 rain days32 °F (0 °C) / 14 °F (-10 °C), 8 rain daysCrowds: High · 1 festival or holiday
Compare two months
Weather, crowds and prices for any two months in Helena, side by side.
Verdict
Jun: Great
Jul: Great
Daytime high
Jun: 24 °C (75 °F)75 °F (24 °C)
Jul: 30 °C (86 °F)86 °F (30 °C)
Night low
Jun: 9 °C (48 °F)48 °F (9 °C)
Jul: 13 °C (55 °F)55 °F (13 °C)
Rain days
Jun: 10
Jul: 7 (better)
Crowds
Jun: High
Jul: High
Prices
Jun: High
Jul: High
Festivals listed
Jun: 0
Jul: 1
June: Inside Helena's best window: Jun–Sep.
July: Inside Helena's best window: Jun–Sep.
Helena: figures are long-term averages from this guide, not a forecast.