When to go · Groton, Connecticut
Groton, Connecticut, month by month
The best months for Groton, Connecticut: May, Jun, Jul, Aug, Sep, Oct. Months to avoid: Jan, Feb.
Month by month
- JanuaryAvoidListed as a month to avoid: Jan–Feb (cold, some sights on winter hours).4 °C (39 °F) / -5 °C (23 °F), 10 rain days39 °F (4 °C) / 23 °F (-5 °C), 10 rain daysCrowds: Low
- FebruaryAvoidListed as a month to avoid: Jan–Feb (cold, some sights on winter hours).5 °C (41 °F) / -4 °C (25 °F), 9 rain days41 °F (5 °C) / 25 °F (-4 °C), 9 rain daysCrowds: Low · 1 festival or holiday
- MarchGoodOutside the best window (May–Oct (museum open daily mid-May to mid-Oct)). Across United States: Spring break fills Florida beaches and parks; the desert parks come into season.9 °C (48 °F) / 0 °C (32 °F), 10 rain days48 °F (9 °C) / 32 °F (0 °C), 10 rain daysCrowds: Medium · 2 festivals or holidays
- AprilGoodOutside the best window (May–Oct (museum open daily mid-May to mid-Oct)). Across United States: Good month for the Southwest, Washington cherry blossoms, the South; mountain roads still closed.14 °C (57 °F) / 4 °C (39 °F), 11 rain days57 °F (14 °C) / 39 °F (4 °C), 11 rain daysCrowds: Medium · 1 festival or holiday
- MayGreatInside Groton, Connecticut's best window: May–Oct (museum open daily mid-May to mid-Oct).19 °C (66 °F) / 9 °C (48 °F), 11 rain days66 °F (19 °C) / 48 °F (9 °C), 11 rain daysCrowds: Medium · 1 festival or holiday
- JuneGreatInside Groton, Connecticut's best window: May–Oct (museum open daily mid-May to mid-Oct).24 °C (75 °F) / 14 °C (57 °F), 10 rain days75 °F (24 °C) / 57 °F (14 °C), 10 rain daysCrowds: High
- JulyGreatInside Groton, Connecticut's best window: May–Oct (museum open daily mid-May to mid-Oct).27 °C (81 °F) / 18 °C (64 °F), 9 rain days81 °F (27 °C) / 64 °F (18 °C), 9 rain daysCrowds: High · 1 festival or holiday
- AugustGreatInside Groton, Connecticut's best window: May–Oct (museum open daily mid-May to mid-Oct).27 °C (81 °F) / 17 °C (63 °F), 9 rain days81 °F (27 °C) / 63 °F (17 °C), 9 rain daysCrowds: High
- SeptemberGreatInside Groton, Connecticut's best window: May–Oct (museum open daily mid-May to mid-Oct).23 °C (73 °F) / 13 °C (55 °F), 8 rain days73 °F (23 °C) / 55 °F (13 °C), 8 rain daysCrowds: Medium · 1 festival or holiday
- OctoberGreatInside Groton, Connecticut's best window: May–Oct (museum open daily mid-May to mid-Oct).17 °C (63 °F) / 7 °C (45 °F), 9 rain days63 °F (17 °C) / 45 °F (7 °C), 9 rain daysCrowds: Medium
- NovemberMixedOutside the best window (May–Oct (museum open daily mid-May to mid-Oct)). Across United States: Quiet between holidays; Thanksgiving week is the busiest travel period of the year.12 °C (54 °F) / 3 °C (37 °F), 10 rain days54 °F (12 °C) / 37 °F (3 °C), 10 rain daysCrowds: Medium · 1 festival or holiday
- DecemberMixedOutside the best window (May–Oct (museum open daily mid-May to mid-Oct)). Across United States: Holiday lights in New York, ski season opens; flights and hotels peak around Christmas and New Year.6 °C (43 °F) / -2 °C (28 °F), 10 rain days43 °F (6 °C) / 28 °F (-2 °C), 10 rain daysCrowds: High · 1 festival or holiday
Compare two months
Weather, crowds and prices for any two months in Groton, Connecticut, side by side.
Verdict
May: Great
Jun: Great
Daytime high
May: 19 °C (66 °F)66 °F (19 °C)
Jun: 24 °C (75 °F)75 °F (24 °C)
Night low
May: 9 °C (48 °F)48 °F (9 °C)
Jun: 14 °C (57 °F)57 °F (14 °C)
Rain days
May: 11
Jun: 10 (better)
Crowds
May: Medium
Jun: High
Prices
May: Medium
Jun: High
Festivals listed
May: 1
Jun: 0
May: Inside Groton, Connecticut's best window: May–Oct (museum open daily mid-May to mid-Oct).
June: Inside Groton, Connecticut's best window: May–Oct (museum open daily mid-May to mid-Oct).
Groton, Connecticut: figures are long-term averages from this guide, not a forecast.