When to go · Boise
Boise, month by month
The best months for Boise: May, Jun, Sep, Oct. Months to avoid: Jan, Feb, Jul, Aug, Dec.
Month by month
- JanuaryAvoidListed as a month to avoid: Jul–Aug (mid-30s °C and dry), Dec–Feb (ice and rain).4 °C (39 °F) / -4 °C (25 °F), 8 rain days39 °F (4 °C) / 25 °F (-4 °C), 8 rain daysCrowds: Low
- FebruaryAvoidListed as a month to avoid: Jul–Aug (mid-30s °C and dry), Dec–Feb (ice and rain).8 °C (46 °F) / -2 °C (28 °F), 7 rain days46 °F (8 °C) / 28 °F (-2 °C), 7 rain daysCrowds: Low · 1 festival or holiday
- MarchGoodOutside the best window (May–Jun, Sep–early Oct). Across United States: Spring break fills Florida beaches and parks; the desert parks come into season.13 °C (55 °F) / 2 °C (36 °F), 9 rain days55 °F (13 °C) / 36 °F (2 °C), 9 rain daysCrowds: Medium · 2 festivals or holidays
- AprilGoodOutside the best window (May–Jun, Sep–early Oct). Across United States: Good month for the Southwest, Washington cherry blossoms, the South; mountain roads still closed.17 °C (63 °F) / 4 °C (39 °F), 8 rain days63 °F (17 °C) / 39 °F (4 °C), 8 rain daysCrowds: Medium · 1 festival or holiday
- MayGreatInside Boise's best window: May–Jun, Sep–early Oct.22 °C (72 °F) / 9 °C (48 °F), 8 rain days72 °F (22 °C) / 48 °F (9 °C), 8 rain daysCrowds: Medium · 1 festival or holiday
- JuneGreatInside Boise's best window: May–Jun, Sep–early Oct.27 °C (81 °F) / 12 °C (54 °F), 5 rain days81 °F (27 °C) / 54 °F (12 °C), 5 rain daysCrowds: High
- JulyAvoidListed as a month to avoid: Jul–Aug (mid-30s °C and dry), Dec–Feb (ice and rain).34 °C (93 °F) / 17 °C (63 °F), 2 rain days93 °F (34 °C) / 63 °F (17 °C), 2 rain daysCrowds: High · 1 festival or holiday
- AugustAvoidListed as a month to avoid: Jul–Aug (mid-30s °C and dry), Dec–Feb (ice and rain).33 °C (91 °F) / 16 °C (61 °F), 2 rain days91 °F (33 °C) / 61 °F (16 °C), 2 rain daysCrowds: High
- SeptemberGreatInside Boise's best window: May–Jun, Sep–early Oct.27 °C (81 °F) / 11 °C (52 °F), 3 rain days81 °F (27 °C) / 52 °F (11 °C), 3 rain daysCrowds: Medium · 1 festival or holiday
- OctoberGreatInside Boise's best window: May–Jun, Sep–early Oct.18 °C (64 °F) / 5 °C (41 °F), 5 rain days64 °F (18 °C) / 41 °F (5 °C), 5 rain daysCrowds: Medium
- NovemberMixedOutside the best window (May–Jun, Sep–early Oct). Across United States: Quiet between holidays; Thanksgiving week is the busiest travel period of the year.9 °C (48 °F) / 0 °C (32 °F), 8 rain days48 °F (9 °C) / 32 °F (0 °C), 8 rain daysCrowds: Medium · 1 festival or holiday
- DecemberAvoidListed as a month to avoid: Jul–Aug (mid-30s °C and dry), Dec–Feb (ice and rain).4 °C (39 °F) / -4 °C (25 °F), 9 rain days39 °F (4 °C) / 25 °F (-4 °C), 9 rain daysCrowds: High · 1 festival or holiday
Compare two months
Weather, crowds and prices for any two months in Boise, side by side.
Verdict
May: Great
Jun: Great
Daytime high
May: 22 °C (72 °F)72 °F (22 °C)
Jun: 27 °C (81 °F)81 °F (27 °C)
Night low
May: 9 °C (48 °F)48 °F (9 °C)
Jun: 12 °C (54 °F)54 °F (12 °C)
Rain days
May: 8
Jun: 5 (better)
Crowds
May: Medium
Jun: High
Prices
May: Medium
Jun: High
Festivals listed
May: 1
Jun: 0
May: Inside Boise's best window: May–Jun, Sep–early Oct.
June: Inside Boise's best window: May–Jun, Sep–early Oct.
Boise: figures are long-term averages from this guide, not a forecast.