Laconia climate — normals and trends
Laconia (United States) has a warm-summer humid continental climate (Dfb) under the Köppen-Geiger classification. Its mean annual temperature is 7.4 °C and it receives 1,130 mm of precipitation per year.
These figures are normals computed over 86 complete calendar years, from 1940 to 2025, using ERA5 reanalysis data from the Copernicus programme.
The warmest month is July (20.9 °C on average) and the coldest is January (-6.7 °C). Rainfall peaks in November.
Laconia averages 141 frost days, 11 hot days (≥ 30 °C) and 124 rainy days per year.
Laconia has warmed by +1.9 °C between 1940 and 2025, or +0.22 °C per decade. This trend is statistically significant.
The number of frost days there went from about 151 to 131 per year over the period.
The hottest day of the period reached 36.4 °C (on 20 July 2019) and the coldest -31.0 °C (on 14 January 1957).
Data from ERA5 reanalysis (Copernicus Climate Change Service), redistributed under a CC-BY 4.0 licence. Normals are recomputed whenever the archive is updated.
Climate normals · ERA5
LaconiaNew Hampshire
- coords
- 43.53°, -71.47°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
7.4°C
Average daily high
12.2°C
Average daily low
2.8°C
Annual rainfall
1,130mm
Sunshine / day
8.6h
Mean relative humidity
72%
Average peak wind
15.8km/h
Seasonal range
27.6°C
Frost days (< 0 °C)
141 d/yr
Hot days (≥ 30 °C)
11 d/yr
Rainy days (≥ 1 mm)
124 d/yr
Annual snowfall
161.6 cm
Average feels-like high
9.9 °C
Average feels-like low
-0.2 °C
Average peak gust
39.5 km/h
Tropical nights (≥ 20 °C)
6 d/yr
Solar radiation
13.8 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+1.9 °C
since 1940
+0.2 °C per decade · r² = 0.45 · p = < 0.001
Trend fitted by linear regression (ordinary least squares) on annual means. A trend is shown only when it is statistically significant (p < 0.05).
A climograph overlays rainfall (bars) and temperature (line): the standard reading in climatology, where you can see at a glance whether the warm season is also the dry one.
Records for the period
Hottest day
36.4 °C
20 July 2019
Coldest day
-31.0 °C
14 January 1957
Wettest day
101 mm
8 October 2005
Windiest day
45.1 km/h
31 August 1954
Strongest gust
131.4 km/h
26 November 1950
Hottest feels-like
40.9 °C
1 July 2018
Coldest feels-like
-36.2 °C
20 December 1942
Snowiest day
35.8 cm
22 March 2001
Sunniest day
14.9 h
23 June 2021
Normals computed over complete calendar years 1940–2025.
A specific year
Pick a year and see how it compares to normal — warmer, drier or more extreme than usual?
Across the whole year
Month by month
| High | vs. normal | Precipitation | vs. normal | |
|---|---|---|---|---|
| Jan | -2.3 °C | +0.1 °C | 36 mm | -47 mm |
| Feb | -1.5 °C | -0.7 °C | 92 mm | +12 mm |
| Mar | 7.5 °C | +3.5 °C | 102 mm | +6 mm |
| Apr | 13.2 °C | +2.1 °C | 108 mm | +11 mm |
| May | 17.2 °C | -0.8 °C | 236 mm | +140 mm |
| Jun | 24.0 °C | +0.8 °C | 66 mm | -32 mm |
| Jul | 28.1 °C | +2.1 °C | 89 mm | -13 mm |
| Aug | 26.2 °C | +1.3 °C | 18 mm | -73 mm |
| Sep | 23.1 °C | +2.6 °C | 80 mm | -8 mm |
| Oct | 15.6 °C | +1.5 °C | 105 mm | +10 mm |
| Nov | 6.1 °C | -0.9 °C | 72 mm | -33 mm |
| Dec | -1.2 °C | -1.6 °C | 86 mm | -13 mm |
The year's extremes
What was the weather like that day?
Your birthday, a wedding, a memorable trip: discover the actual weather for any date since 1940.
Frequently asked questions
What is the climate of Laconia?
Laconia has a warm-summer humid continental climate (Köppen Dfb). Over 1940-2025, the average annual temperature is 7.4 °C and it receives 1,130 mm of precipitation per year.
What is the hottest day ever recorded in Laconia?
The hottest day measured in Laconia between 1940 and 2025 was 20 July 2019, reaching 36.4 °C.
What is the coldest day in Laconia?
The coldest day measured in Laconia between 1940 and 2025 was 14 January 1957, at -31.0 °C.
Does it snow in Laconia?
Yes. Laconia gets on average 161.6 cm of snow per year and has around 141 frost days.
Has the climate of Laconia warmed?
Yes: Laconia warmed by +1.9 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Laconia?
The wettest day measured in Laconia between 1940 and 2025 was 8 October 2005, with 101 mm of rain in 24 hours.
What was the windiest day in Laconia?
The windiest day measured in Laconia between 1940 and 2025 was 31 August 1954, with winds reaching 45.1 km/h.
What is the warmest month in Laconia?
The warmest month in Laconia is July (20.9 °C on average); the coldest is January (-6.7 °C).
How much does it rain in Laconia?
Laconia receives on average 1,130 mm of precipitation per year, spread over about 124 rainy days.
Is it sunny in Laconia?
Laconia gets on average 8.6 hours of sunshine per day, roughly 3,139 hours per year over 1940-2025.
What is the biggest single-day snowfall in Laconia?
The heaviest 24-hour snowfall measured in Laconia between 1940 and 2025 was 22 March 2001, with 35.8 cm.
Are there tropical nights in Laconia?
Yes: Laconia has on average 6 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Laconia?
In Laconia, between 1940 and 2025, the highest apparent temperature reached 40.9 °C on 1 July 2018, and the lowest was -36.2 °C on 20 December 1942.
Compare Laconia with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Laconia