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Data as of 2025-12-31
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Built 2026-10-19 (19 October 2026)

Zanjan Threshold Days by Year (IRM00040729)

12 fixed thresholds counted per year at Zanjan (IRM00040729): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Zanjan Thresholds

  • Zanjan: days with 10 mm (0.39 in) or more of precipitation in 22 years, most in 2007 with 11.
  • Zanjan: days with 25 mm (0.98 in) or more of precipitation in 13 years, most in 2007 with 4.
  • Zanjan: days with a maximum temperature at or above 30 C (86 F) in 7 years, most in 2017 with 110.
  • Zanjan: days with a maximum temperature at or above 35 C (95 F) in 7 years, most in 2017 with 53.
  • 12 fixed thresholds have at least one qualifying day at Zanjan.
7 years with a qualifying day
Days at or above 30 C (86 F) per year at Zanjan Days per year at Zanjan with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 110 in 2017. 0501001502006: 762007: 552008: 742015: 1022016: 942017: 1102025: 482006200720082015201620172025
Days per year at Zanjan with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 110 in 2017.
Days at or above 30 C (86 F) per year at Zanjan
YearDaysDecade average
20067668.3
20075568.3
20087468.3
2015102102
201694102
2017110102
20254848
First to last qualifying date each year at Zanjan For each year, a bar from the first to the last day at Zanjan meeting 30 C (86 F). 2006: 8 June 2006 to 12 September 20062007: 8 June 2007 to 14 September 20072008: 27 April 2008 to 14 September 20082015: 19 May 2015 to 24 September 20152016: 16 May 2016 to 23 September 20162017: 18 May 2017 to 25 September 20172025: 18 May 2025 to 24 August 20252006200720082015201620172025JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Zanjan meeting 30 C (86 F).
First to last qualifying date each year at Zanjan
YearFirst dateLast date
20062006-06-082006-09-12
20072007-06-082007-09-14
20082008-04-272008-09-14
20152015-05-192015-09-24
20162016-05-162016-09-23
20172017-05-182017-09-25
20252025-05-182025-08-24

Every Fixed Threshold

Fixed thresholds at Zanjan
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days7110201748
35 C (95 F): Days753201722
40 C (104 F): Days1120151
90 F (32.2 C): Days786201735
100 F (37.8 C): Days41420156
0 C (32 F): Ice days (max62820084
0 C (32 F): Frost days (min10n/a48
-10 C (14 F): Days with min10n/a6
20 C (68 F): Tropical nights (min10n/a14
10 mm (0.39 in): Days with 10 mm or more rain221120074
25 mm (0.98 in): Days with 25 mm or more rain13420073
50 mm (1.97 in): Days with 50 mm or more rain3120074

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 2006.

Download the Data

  • Data for Zanjan threshold days by year: CSV or JSON. Field meanings are on the data page.

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 (2025-12-31).