Helsinki-Malmin Lentoasema Threshold Days by Year
11 fixed thresholds counted per year at Helsinki-Malmin Lentoasema (FIE00142241): hot days, frost, tropical nights and heavy rain, with the most days in a year.
Key Facts for Helsinki-Malmin Lentoasema Thresholds
- Helsinki-Malmin Lentoasema: days with a maximum temperature at or below 0 C (32 F) in 48 years, most in 1963 with 107.
- Helsinki-Malmin Lentoasema: nights with a minimum temperature at or below 0 C (32 F) in 48 years, most in 1976 with 193.
- Helsinki-Malmin Lentoasema: nights with a minimum temperature at or below -10 C (14 F) in 48 years, most in 1963 with 82.
- Helsinki-Malmin Lentoasema: nights with a minimum temperature at or below -20 C (-4 F) in 43 years, most in 1985 with 37.
- 11 fixed thresholds have at least one qualifying day at Helsinki-Malmin Lentoasema.
Days at or above 30 C (86 F)
9 years with a qualifying day| Year | Days | Decade average |
|---|---|---|
| 1972 | 1 | 1.7 |
| 1973 | 2 | 1.7 |
| 1975 | 2 | 1.7 |
| 1983 | 3 | 3 |
| 1992 | 1 | 1 |
| 2018 | 4 | 3 |
| 2019 | 2 | 3 |
| 2021 | 5 | 3.5 |
| 2022 | 2 | 3.5 |
| Year | First date | Last date |
|---|---|---|
| 1972 | 1972-06-28 | 1972-06-28 |
| 1973 | 1973-06-25 | 1973-07-06 |
| 1975 | 1975-08-06 | 1975-08-08 |
| 1983 | 1983-07-09 | 1983-07-11 |
| 1992 | 1992-08-11 | 1992-08-11 |
| 2018 | 2018-07-15 | 2018-08-03 |
| 2019 | 2019-07-27 | 2019-07-28 |
| 2021 | 2021-06-20 | 2021-07-15 |
| 2022 | 2022-06-26 | 2022-06-27 |
Every Fixed Threshold
| Threshold | Years with a qualifying day | Most days in a year | Year | Latest year days |
|---|---|---|---|---|
| 30 C (86 F): Days | 9 | 5 | 2021 | 2 |
| 90 F (32.2 C): Days | 1 | 1 | 2019 | 1 |
| 0 C (32 F): Ice days (max | 48 | 107 | 1963 | 55 |
| 0 C (32 F): Frost days (min | 48 | 193 | 1976 | 92 |
| -10 C (14 F): Days with min | 48 | 82 | 1963 | 34 |
| -20 C (-4 F): Days with min | 43 | 37 | 1985 | 13 |
| -30 C (-22 F): Days with min | 11 | 6 | 1987 | 6 |
| 20 C (68 F): Tropical nights (min | 8 | 4 | 2018 | 2 |
| 10 mm (0.39 in): Days with 10 mm or more rain | 34 | 29 | 1974 | 16 |
| 25 mm (0.98 in): Days with 25 mm or more rain | 29 | 4 | 1963 | 3 |
| 50 mm (1.97 in): Days with 50 mm or more rain | 3 | 2 | 1960 | 1 |
Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1972.
Download the Data
Source: NOAA National Centers for Environmental Information, Global Historical Climatology Network Daily (GHCN-Daily). Records are computed by World Extreme Weather Monitor and are not official NOAA products. (US Government open data (NOAA NCEI)) Data as of 2026-10-16 (16 October 2026). Threshold counts are computed by this site.
Data as of . Last revised (2026-10-12).