Smithfield climate — normals and trends
Smithfield (United States) has a hot-summer humid continental climate (Dfa) under the Köppen-Geiger classification. Its mean annual temperature is 10.1 °C and it receives 1,098 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 (22.6 °C on average) and the coldest is January (-2.3 °C). Rainfall peaks in March.
Smithfield averages 107 frost days, 19 hot days (≥ 30 °C) and 119 rainy days per year.
Smithfield has warmed by +1.7 °C between 1940 and 2025, or +0.20 °C per decade. This trend is statistically significant.
The number of frost days there went from about 114 to 100 per year over the period.
The hottest day of the period reached 39.2 °C (on 22 July 2011) and the coldest -26.7 °C (on 13 February 1967).
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
SmithfieldRhode Island
- coords
- 41.92°, -71.55°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
10.1°C
Average daily high
14.8°C
Average daily low
5.7°C
Annual rainfall
1,098mm
Sunshine / day
8.6h
Mean relative humidity
69%
Average peak wind
17.3km/h
Seasonal range
24.9°C
Frost days (< 0 °C)
107 d/yr
Hot days (≥ 30 °C)
19 d/yr
Rainy days (≥ 1 mm)
119 d/yr
Annual snowfall
101.4 cm
Average feels-like high
12.9 °C
Average feels-like low
2.8 °C
Average peak gust
40.8 km/h
Tropical nights (≥ 20 °C)
18 d/yr
Solar radiation
14.2 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+1.7 °C
since 1940
+0.2 °C per decade · r² = 0.42 · 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
39.2 °C
22 July 2011
Coldest day
-26.7 °C
13 February 1967
Wettest day
105 mm
21 September 1961
Windiest day
53.0 km/h
27 September 1985
Strongest gust
131.8 km/h
27 September 1985
Hottest feels-like
43.4 °C
2 August 1975
Coldest feels-like
-32.0 °C
13 February 1967
Snowiest day
42.4 cm
12 December 1992
Sunniest day
14.7 h
21 June 2025
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 | 1.5 °C | -0.3 °C | 47 mm | -43 mm |
| Feb | 3.2 °C | +0.1 °C | 78 mm | -5 mm |
| Mar | 10.5 °C | +3.0 °C | 110 mm | +9 mm |
| Apr | 15.5 °C | +1.8 °C | 95 mm | +0 mm |
| May | 19.4 °C | -0.1 °C | 174 mm | +83 mm |
| Jun | 25.8 °C | +1.3 °C | 59 mm | -28 mm |
| Jul | 28.8 °C | +1.2 °C | 100 mm | +15 mm |
| Aug | 26.2 °C | -0.3 °C | 56 mm | -38 mm |
| Sep | 23.5 °C | +1.0 °C | 71 mm | -15 mm |
| Oct | 17.0 °C | +0.4 °C | 96 mm | +8 mm |
| Nov | 9.9 °C | -0.5 °C | 59 mm | -37 mm |
| Dec | 2.8 °C | -1.5 °C | 84 mm | -15 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 Smithfield?
Smithfield has a hot-summer humid continental climate (Köppen Dfa). Over 1940-2025, the average annual temperature is 10.1 °C and it receives 1,098 mm of precipitation per year.
What is the hottest day ever recorded in Smithfield?
The hottest day measured in Smithfield between 1940 and 2025 was 22 July 2011, reaching 39.2 °C.
What is the coldest day in Smithfield?
The coldest day measured in Smithfield between 1940 and 2025 was 13 February 1967, at -26.7 °C.
Does it snow in Smithfield?
Yes. Smithfield gets on average 101.4 cm of snow per year and has around 107 frost days.
Has the climate of Smithfield warmed?
Yes: Smithfield warmed by +1.7 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Smithfield?
The wettest day measured in Smithfield between 1940 and 2025 was 21 September 1961, with 105 mm of rain in 24 hours.
What was the windiest day in Smithfield?
The windiest day measured in Smithfield between 1940 and 2025 was 27 September 1985, with winds reaching 53.0 km/h.
What is the warmest month in Smithfield?
The warmest month in Smithfield is July (22.6 °C on average); the coldest is January (-2.3 °C).
How much does it rain in Smithfield?
Smithfield receives on average 1,098 mm of precipitation per year, spread over about 119 rainy days.
Is it sunny in Smithfield?
Smithfield 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 Smithfield?
The heaviest 24-hour snowfall measured in Smithfield between 1940 and 2025 was 12 December 1992, with 42.4 cm.
Are there tropical nights in Smithfield?
Yes: Smithfield has on average 18 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Smithfield?
In Smithfield, between 1940 and 2025, the highest apparent temperature reached 43.4 °C on 2 August 1975, and the lowest was -32.0 °C on 13 February 1967.
Compare Smithfield with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Smithfield