Grajewo climate — normals and trends
Grajewo (Poland) has a warm-summer humid continental climate (Dfb) under the Köppen-Geiger classification. Its mean annual temperature is 7.1 °C and it receives 655 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 (17.9 °C on average) and the coldest is January (-4.0 °C). Rainfall peaks in July.
Grajewo averages 115 frost days, 2 hot days (≥ 30 °C) and 134 rainy days per year.
Grajewo has warmed by +2.5 °C between 1940 and 2025, or +0.29 °C per decade. This trend is statistically significant.
The number of frost days there went from about 135 to 95 per year over the period.
The hottest day of the period reached 35.1 °C (on 8 August 2015) and the coldest -33.6 °C (on 12 January 1950).
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
GrajewoPodlasie
- coords
- 53.65°, 22.46°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
7.1°C
Average daily high
10.6°C
Average daily low
3.7°C
Annual rainfall
655mm
Sunshine / day
7.0h
Mean relative humidity
80%
Average peak wind
18.2km/h
Seasonal range
21.9°C
Frost days (< 0 °C)
115 d/yr
Hot days (≥ 30 °C)
2 d/yr
Rainy days (≥ 1 mm)
134 d/yr
Annual snowfall
75.7 cm
Average feels-like high
7.7 °C
Average feels-like low
0.4 °C
Average peak gust
36.0 km/h
Tropical nights (≥ 20 °C)
0 d/yr
Solar radiation
10.2 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+2.5 °C
since 1940
+0.3 °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
35.1 °C
8 August 2015
Coldest day
-33.6 °C
12 January 1950
Wettest day
51 mm
3 September 1995
Windiest day
54.7 km/h
22 February 1953
Strongest gust
107.3 km/h
18 November 2004
Hottest feels-like
36.5 °C
17 July 2007
Coldest feels-like
-39.4 °C
12 January 1950
Snowiest day
16.6 cm
30 January 1979
Sunniest day
16.6 h
14 June 2021
Normals computed over complete calendar years 1940–2025.
A specific year
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Across the whole year
Month by month
| High | vs. normal | Precipitation | vs. normal | |
|---|---|---|---|---|
| Jan | 3.6 °C | +5.5 °C | 40 mm | -2 mm |
| Feb | 1.0 °C | +1.7 °C | 19 mm | -18 mm |
| Mar | 10.3 °C | +6.3 °C | 39 mm | +1 mm |
| Apr | 15.4 °C | +4.2 °C | 18 mm | -29 mm |
| May | 15.2 °C | -1.9 °C | 61 mm | -1 mm |
| Jun | 21.2 °C | +0.7 °C | 50 mm | -24 mm |
| Jul | 23.4 °C | +1.2 °C | 131 mm | +46 mm |
| Aug | 22.1 °C | +0.3 °C | 60 mm | -13 mm |
| Sep | 19.6 °C | +2.6 °C | 82 mm | +25 mm |
| Oct | 10.9 °C | +0.1 °C | 73 mm | +24 mm |
| Nov | 5.0 °C | +0.7 °C | 58 mm | +11 mm |
| Dec | 3.6 °C | +3.2 °C | 22 mm | -24 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 Grajewo?
Grajewo has a warm-summer humid continental climate (Köppen Dfb). Over 1940-2025, the average annual temperature is 7.1 °C and it receives 655 mm of precipitation per year.
What is the hottest day ever recorded in Grajewo?
The hottest day measured in Grajewo between 1940 and 2025 was 8 August 2015, reaching 35.1 °C.
What is the coldest day in Grajewo?
The coldest day measured in Grajewo between 1940 and 2025 was 12 January 1950, at -33.6 °C.
Does it snow in Grajewo?
Yes. Grajewo gets on average 75.7 cm of snow per year and has around 115 frost days.
Has the climate of Grajewo warmed?
Yes: Grajewo warmed by +2.5 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Grajewo?
The wettest day measured in Grajewo between 1940 and 2025 was 3 September 1995, with 51 mm of rain in 24 hours.
What was the windiest day in Grajewo?
The windiest day measured in Grajewo between 1940 and 2025 was 22 February 1953, with winds reaching 54.7 km/h.
What is the warmest month in Grajewo?
The warmest month in Grajewo is July (17.9 °C on average); the coldest is January (-4.0 °C).
How much does it rain in Grajewo?
Grajewo receives on average 655 mm of precipitation per year, spread over about 134 rainy days.
Is it sunny in Grajewo?
Grajewo gets on average 7.0 hours of sunshine per day, roughly 2,555 hours per year over 1940-2025.
What is the biggest single-day snowfall in Grajewo?
The heaviest 24-hour snowfall measured in Grajewo between 1940 and 2025 was 30 January 1979, with 16.6 cm.
Are there tropical nights in Grajewo?
Almost never: tropical nights (temperature staying above 20 °C) are virtually non-existent in Grajewo.
What was the most extreme apparent temperature in Grajewo?
In Grajewo, between 1940 and 2025, the highest apparent temperature reached 36.5 °C on 17 July 2007, and the lowest was -39.4 °C on 12 January 1950.
Compare Grajewo with another city
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Nearby cities
The climate around Grajewo