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When to go · Londonderry, New Hampshire

Londonderry, New Hampshire in September

Great month. Inside Londonderry, New Hampshire's best window: Sep–Oct (apple harvest), May–Jun (pleasant weather).

Key facts

Verdict
Great
Temperature
19°C (66°F) / 10°C (50°F)
average high / low
Rain days
6
Crowds
Medium
United States overall
Prices
Medium
United States overall

Verdict

GreatBest and avoid months for Londonderry, New Hampshire

Inside Londonderry, New Hampshire's best window: Sep–Oct (apple harvest), May–Jun (pleasant weather).

Is another month better than September?

No other month rates higher than September for Londonderry, New Hampshire in this guide.

Weather in September

Long-term averages
  • Londonderry, New HampshireHighs around 19 °C (66 °F), lows around 10 °C (50 °F), rain on about 6 days

Festivals and holidays

Dates as our data lists them. Moving holidays (lunar and Islamic calendars, Easter) shift every year: check the date for your year before you build a trip on it.

  • Labor Day big impact

    1st Monday of September · United States

    End of summer; last big road-trip weekend.

Crowds and prices

Crowds · United States overall
Medium
Prices · United States overall
Medium

United States overall: After Labor Day the crowds drop and parks stay open; Florida and the Gulf are at hurricane peak.

Compare two months

Weather, crowds and prices for any two months in Londonderry, New Hampshire, side by side.

  • Verdict

    Sep: Great

    May: Great

  • Daytime high

    Sep: 19 °C (66 °F)

    May: 16 °C (61 °F)

  • Night low

    Sep: 10 °C (50 °F)

    May: 7 °C (45 °F)

  • Rain days

    Sep: 6

    May: 5 (better)

  • Crowds

    Sep: Medium

    May: Medium

  • Prices

    Sep: Medium

    May: Medium

  • Festivals listed

    Sep: 1

    May: 1

September: Inside Londonderry, New Hampshire's best window: Sep–Oct (apple harvest), May–Jun (pleasant weather).

May: Inside Londonderry, New Hampshire's best window: Sep–Oct (apple harvest), May–Jun (pleasant weather).

Londonderry, New Hampshire: figures are long-term averages from this guide, not a forecast.

What to pack

  • A warm layer for the evenings

Build the full packing list for your trip →

Across United States in September →