Ahtari Myllymaki Threshold Days by Year (FIE00144482)
12 fixed thresholds counted per year at Ahtari Myllymaki (FIE00144482): hot days, frost, tropical nights and heavy rain, with the most days in a year.
Key Facts for Ahtari Myllymaki Thresholds
- Ahtari Myllymaki: days with a maximum temperature at or below 0 C (32 F) in 68 years, most in 1976 with 125.
- Ahtari Myllymaki: nights with a minimum temperature at or below 0 C (32 F) in 68 years, most in 1993 with 226.
- Ahtari Myllymaki: nights with a minimum temperature at or below -10 C (14 F) in 68 years, most in 1969 with 100.
- Ahtari Myllymaki: days with 10 mm (0.39 in) or more of precipitation in 68 years, most in 2011 with 25.
- 12 fixed thresholds have at least one qualifying day at Ahtari Myllymaki.
Days at or above 30 C (86 F)
16 years with a qualifying day| Year | Days | Decade average |
|---|---|---|
| 1963 | 1 | 1 |
| 1972 | 2 | 1.5 |
| 1977 | 1 | 1.5 |
| 1988 | 2 | 2 |
| 1994 | 3 | 2 |
| 1999 | 1 | 2 |
| 2003 | 1 | 1 |
| 2010 | 2 | 2 |
| 2014 | 1 | 2 |
| 2018 | 4 | 2 |
| 2019 | 1 | 2 |
| 2020 | 2 | 2.6 |
| 2021 | 3 | 2.6 |
| 2022 | 1 | 2.6 |
| 2023 | 1 | 2.6 |
| 2025 | 6 | 2.6 |
| Year | First date | Last date |
|---|---|---|
| 1963 | 1963-08-01 | 1963-08-01 |
| 1972 | 1972-06-27 | 1972-06-28 |
| 1977 | 1977-06-15 | 1977-06-15 |
| 1988 | 1988-06-27 | 1988-06-28 |
| 1994 | 1994-07-09 | 1994-07-28 |
| 1999 | 1999-06-26 | 1999-06-26 |
| 2003 | 2003-07-16 | 2003-07-16 |
| 2010 | 2010-07-13 | 2010-07-29 |
| 2014 | 2014-07-26 | 2014-07-26 |
| 2018 | 2018-07-17 | 2018-08-01 |
| 2019 | 2019-07-27 | 2019-07-27 |
| 2020 | 2020-06-25 | 2020-06-26 |
| 2021 | 2021-06-22 | 2021-07-27 |
| 2022 | 2022-06-27 | 2022-06-27 |
| 2023 | 2023-08-07 | 2023-08-07 |
| 2025 | 2025-07-14 | 2025-07-31 |
Every Fixed Threshold
| Threshold | Years with a qualifying day | Most days in a year | Year | Latest year days |
|---|---|---|---|---|
| 30 C (86 F): Days | 16 | 6 | 2025 | 6 |
| 90 F (32.2 C): Days | 1 | 1 | 2010 | 1 |
| 0 C (32 F): Ice days (max | 68 | 125 | 1976 | 54 |
| 0 C (32 F): Frost days (min | 68 | 226 | 1993 | 102 |
| -10 C (14 F): Days with min | 68 | 100 | 1969 | 48 |
| -20 C (-4 F): Days with min | 67 | 60 | 1985 | 21 |
| -30 C (-22 F): Days with min | 45 | 20 | 1987 | 7 |
| -40 C (-40 F): Days with min | 1 | 1 | 1966 | 1 |
| 20 C (68 F): Tropical nights (min | 2 | 1 | 2010 | 1 |
| 10 mm (0.39 in): Days with 10 mm or more rain | 68 | 25 | 2011 | 8 |
| 25 mm (0.98 in): Days with 25 mm or more rain | 41 | 5 | 2005 | 3 |
| 50 mm (1.97 in): Days with 50 mm or more rain | 2 | 2 | 2023 | 1 |
Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1963.
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 2026-10-17 (17 October 2026). Threshold counts are computed by this site.
Data as of . Last revised (2026-10-17).