When to go · St. Mary
St. Mary, month by month
The best months for St. Mary: Jun, Jul, Aug, Sep. Months to avoid: Jan, Feb, Mar, Apr, Nov, Dec.
Month by month
- JanuaryAvoidListed as a month to avoid: Nov–Apr (Going-to-the-Sun Road closed over Logan Pass; most services shut).-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: Nov–Apr (Going-to-the-Sun Road closed over Logan Pass; most services shut).1 °C (34 °F) / -10 °C (14 °F), 7 rain days34 °F (1 °C) / 14 °F (-10 °C), 7 rain daysCrowds: Low · 1 festival or holiday
- MarchAvoidListed as a month to avoid: Nov–Apr (Going-to-the-Sun Road closed over Logan Pass; most services shut).5 °C (41 °F) / -6 °C (21 °F), 8 rain days41 °F (5 °C) / 21 °F (-6 °C), 8 rain daysCrowds: Medium · 2 festivals or holidays
- AprilAvoidListed as a month to avoid: Nov–Apr (Going-to-the-Sun Road closed over Logan Pass; most services shut).10 °C (50 °F) / -2 °C (28 °F), 8 rain days50 °F (10 °C) / 28 °F (-2 °C), 8 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.15 °C (59 °F) / 2 °C (36 °F), 10 rain days59 °F (15 °C) / 36 °F (2 °C), 10 rain daysCrowds: Medium · 1 festival or holiday
- JuneGreatInside St. Mary's best window: Jun–Sep.19 °C (66 °F) / 6 °C (43 °F), 10 rain days66 °F (19 °C) / 43 °F (6 °C), 10 rain daysCrowds: High
- JulyGreatInside St. Mary's best window: Jun–Sep.24 °C (75 °F) / 9 °C (48 °F), 7 rain days75 °F (24 °C) / 48 °F (9 °C), 7 rain daysCrowds: High · 1 festival or holiday
- AugustGreatInside St. Mary's best window: Jun–Sep.24 °C (75 °F) / 9 °C (48 °F), 7 rain days75 °F (24 °C) / 48 °F (9 °C), 7 rain daysCrowds: High
- SeptemberGreatInside St. Mary's best window: Jun–Sep.18 °C (64 °F) / 4 °C (39 °F), 7 rain days64 °F (18 °C) / 39 °F (4 °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.11 °C (52 °F) / -1 °C (30 °F), 7 rain days52 °F (11 °C) / 30 °F (-1 °C), 7 rain daysCrowds: Medium
- NovemberAvoidListed as a month to avoid: Nov–Apr (Going-to-the-Sun Road closed over Logan Pass; most services shut).3 °C (37 °F) / -7 °C (19 °F), 8 rain days37 °F (3 °C) / 19 °F (-7 °C), 8 rain daysCrowds: Medium · 1 festival or holiday
- DecemberAvoidListed as a month to avoid: Nov–Apr (Going-to-the-Sun Road closed over Logan Pass; most services shut).-1 °C (30 °F) / -11 °C (12 °F), 8 rain days30 °F (-1 °C) / 12 °F (-11 °C), 8 rain daysCrowds: High · 1 festival or holiday
Compare two months
Weather, crowds and prices for any two months in St. Mary, side by side.
Verdict
Jun: Great
Jul: Great
Daytime high
Jun: 19 °C (66 °F)66 °F (19 °C)
Jul: 24 °C (75 °F)75 °F (24 °C)
Night low
Jun: 6 °C (43 °F)43 °F (6 °C)
Jul: 9 °C (48 °F)48 °F (9 °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 St. Mary's best window: Jun–Sep.
July: Inside St. Mary's best window: Jun–Sep.
St. Mary: figures are long-term averages from this guide, not a forecast.