When to go · Lewiston
Lewiston, month by month
The best months for Lewiston: May, Jun, Jul, Aug, Sep. Months to avoid: Jan, Feb, Mar, Nov, Dec.
Month by month
- JanuaryAvoidListed as a month to avoid: Nov–Mar (cold, snow may limit river activities).-2 °C (28 °F) / -10 °C (14 °F), 8 rain days28 °F (-2 °C) / 14 °F (-10 °C), 8 rain daysCrowds: Low
- FebruaryAvoidListed as a month to avoid: Nov–Mar (cold, snow may limit river activities).0 °C (32 °F) / -9 °C (16 °F), 7 rain days32 °F (0 °C) / 16 °F (-9 °C), 7 rain daysCrowds: Low · 1 festival or holiday
- MarchAvoidListed as a month to avoid: Nov–Mar (cold, snow may limit river activities).5 °C (41 °F) / -4 °C (25 °F), 6 rain days41 °F (5 °C) / 25 °F (-4 °C), 6 rain daysCrowds: Medium · 2 festivals or holidays
- AprilGoodOutside the best window (May–Sep). Across United States: Good month for the Southwest, Washington cherry blossoms, the South; mountain roads still closed.12 °C (54 °F) / 2 °C (36 °F), 5 rain days54 °F (12 °C) / 36 °F (2 °C), 5 rain daysCrowds: Medium · 1 festival or holiday
- MayGreatInside Lewiston's best window: May–Sep.18 °C (64 °F) / 7 °C (45 °F), 5 rain days64 °F (18 °C) / 45 °F (7 °C), 5 rain daysCrowds: Medium · 1 festival or holiday
- JuneGreatInside Lewiston's best window: May–Sep.23 °C (73 °F) / 12 °C (54 °F), 4 rain days73 °F (23 °C) / 54 °F (12 °C), 4 rain daysCrowds: High
- JulyGreatInside Lewiston's best window: May–Sep.27 °C (81 °F) / 15 °C (59 °F), 3 rain days81 °F (27 °C) / 59 °F (15 °C), 3 rain daysCrowds: High · 1 festival or holiday
- AugustGreatInside Lewiston's best window: May–Sep.26 °C (79 °F) / 14 °C (57 °F), 4 rain days79 °F (26 °C) / 57 °F (14 °C), 4 rain daysCrowds: High
- SeptemberGreatInside Lewiston's best window: May–Sep.21 °C (70 °F) / 10 °C (50 °F), 5 rain days70 °F (21 °C) / 50 °F (10 °C), 5 rain daysCrowds: Medium · 1 festival or holiday
- OctoberGoodOutside the best window (May–Sep). Across United States: Best all-round month: New England foliage, desert parks, cooler cities. High roads start closing late in the month.13 °C (55 °F) / 4 °C (39 °F), 6 rain days55 °F (13 °C) / 39 °F (4 °C), 6 rain daysCrowds: Medium
- NovemberAvoidListed as a month to avoid: Nov–Mar (cold, snow may limit river activities).5 °C (41 °F) / -2 °C (28 °F), 7 rain days41 °F (5 °C) / 28 °F (-2 °C), 7 rain daysCrowds: Medium · 1 festival or holiday
- DecemberAvoidListed as a month to avoid: Nov–Mar (cold, snow may limit river activities).-1 °C (30 °F) / -8 °C (18 °F), 8 rain days30 °F (-1 °C) / 18 °F (-8 °C), 8 rain daysCrowds: High · 1 festival or holiday
Compare two months
Weather, crowds and prices for any two months in Lewiston, side by side.
Verdict
May: Great
Jun: Great
Daytime high
May: 18 °C (64 °F)64 °F (18 °C)
Jun: 23 °C (73 °F)73 °F (23 °C)
Night low
May: 7 °C (45 °F)45 °F (7 °C)
Jun: 12 °C (54 °F)54 °F (12 °C)
Rain days
May: 5
Jun: 4 (better)
Crowds
May: Medium
Jun: High
Prices
May: Medium
Jun: High
Festivals listed
May: 1
Jun: 0
May: Inside Lewiston's best window: May–Sep.
June: Inside Lewiston's best window: May–Sep.
Lewiston: figures are long-term averages from this guide, not a forecast.