Semnan Weather Records (IRM00040757)
Record envelope, standing records and threshold days for Semnan (IRM00040757), Iran, with 53 years of record.
Key Facts for Semnan
- Semnan (IRM00040757) is a weather station in Iran at 35.59 latitude and 53.49 longitude, 1,117 m (3,665 ft) above sea level.
- The station reports from 1973 to 2025, 53 years of record.
- 1,464 records set at Semnan still stand.
- Records are tracked for no element yet: an element needs 30 years of data to be eligible.
About the Station
- Location: Iran, 35.59 latitude, 53.49 longitude.
- Elevation: 1,117 m (3,665 ft).
- Period of record: 1973 to 2025, 53 years.
- Eligible elements: none yet.
Daily Record Envelope and 2026
5 days at or beyond a record| Month | Highest record high | Lowest record low | 2026 highest maximum | 2026 lowest minimum |
|---|---|---|---|---|
| Jan | 22.0 C (71.6 F) | -12.6 C (9.3 F) | 9.6 C (49.3 F) | -1.8 C (28.8 F) |
| Feb | 26.4 C (79.5 F) | -8.8 C (16.2 F) | 16.0 C (60.8 F) | -4.8 C (23.4 F) |
| Mar | 31.0 C (87.8 F) | -5.6 C (21.9 F) | 18.3 C (64.9 F) | -4.5 C (23.9 F) |
| Apr | 35.4 C (95.7 F) | 0.0 C (32.0 F) | n/a | n/a |
| May | 38.6 C (101.5 F) | 5.0 C (41.0 F) | 38.6 C (101.5 F) | 23.5 C (74.3 F) |
| Jun | 43.0 C (109.4 F) | 12.0 C (53.6 F) | n/a | n/a |
| Jul | 44.4 C (111.9 F) | 16.8 C (62.2 F) | 41.7 C (107.1 F) | 23.7 C (74.7 F) |
| Aug | 43.8 C (110.8 F) | 16.0 C (60.8 F) | 42.0 C (107.6 F) | 24.6 C (76.3 F) |
| Sep | 39.6 C (103.3 F) | 9.0 C (48.2 F) | n/a | n/a |
| Oct | 34.4 C (93.9 F) | 2.0 C (35.6 F) | n/a | n/a |
| Nov | 27.2 C (81.0 F) | -9.0 C (15.8 F) | n/a | n/a |
| Dec | 20.2 C (68.4 F) | -10.2 C (13.6 F) | n/a | n/a |
Which Years Hold Standing Records
1,464 standing records| Year set | Standing records |
|---|---|
| 1973 | 25 |
| 1974 | 8 |
| 1975 | 6 |
| 1976 | 13 |
| 1977 | 20 |
| 1978 | 45 |
| 1979 | 14 |
| 1980 | 13 |
| 1989 | 8 |
| 1990 | 22 |
| 1991 | 25 |
| 1992 | 33 |
| 1993 | 4 |
| 1994 | 4 |
| 1999 | 8 |
| 2000 | 34 |
| 2001 | 47 |
| 2002 | 45 |
| 2003 | 5 |
| 2004 | 23 |
| 2005 | 42 |
| 2006 | 48 |
| 2007 | 47 |
| 2008 | 79 |
| 2009 | 28 |
| 2010 | 60 |
| 2011 | 44 |
| 2012 | 46 |
| 2013 | 36 |
| 2014 | 45 |
| 2015 | 67 |
| 2016 | 61 |
| 2017 | 38 |
| 2018 | 60 |
| 2019 | 54 |
| 2020 | 56 |
| 2021 | 75 |
| 2022 | 44 |
| 2023 | 63 |
| 2024 | 63 |
| 2025 | 6 |
Wettest Day of Each Month
Dec: 119.1 mm (4.7 in)| Month | Record daily precipitation (mm) | Date |
|---|---|---|
| Jan | 20.8 mm (0.8 in) | 30 January 2013 |
| Feb | 44.5 mm (1.8 in) | 2 February 2012 |
| Mar | 37.1 mm (1.5 in) | 26 March 1991 |
| Apr | 84.1 mm (3.3 in) | 18 April 1992 |
| May | 29.7 mm (1.2 in) | 11 May 2016 |
| Jun | 88.9 mm (3.5 in) | 23 June 1991 |
| Jul | 28.2 mm (1.1 in) | 12 July 2004 |
| Aug | 80.0 mm (3.1 in) | 6 August 1990 |
| Sep | 32.0 mm (1.3 in) | 18 September 2015 |
| Oct | 10.9 mm (0.4 in) | 26 October 2019 |
| Nov | 17.5 mm (0.7 in) | 20 November 2011 |
| Dec | 119.1 mm (4.7 in) | 9 December 2004 |
Period of Record Coverage
1973 to 2025| Year | Days with data | Share of year | Complete |
|---|---|---|---|
| 1973 | 112 | 31% | No |
| 1974 | 53 | 15% | No |
| 1975 | 44 | 12% | No |
| 1976 | 66 | 18% | No |
| 1977 | 86 | 24% | No |
| 1978 | 215 | 59% | No |
| 1979 | 68 | 19% | No |
| 1980 | 93 | 25% | No |
| 1989 | 23 | 6% | No |
| 1990 | 56 | 15% | No |
| 1991 | 145 | 40% | No |
| 1992 | 106 | 29% | No |
| 1993 | 12 | 3% | No |
| 1994 | 10 | 3% | No |
| 1995 | 7 | 2% | No |
| 1996 | 3 | 1% | No |
| 1997 | 4 | 1% | No |
| 1998 | 1 | 0% | No |
| 1999 | 59 | 16% | No |
| 2000 | 180 | 49% | No |
| 2001 | 249 | 68% | No |
| 2002 | 270 | 74% | No |
| 2003 | 37 | 10% | No |
| 2004 | 181 | 49% | No |
| 2005 | 301 | 82% | No |
| 2006 | 324 | 89% | No |
| 2007 | 329 | 90% | Yes |
| 2008 | 336 | 92% | Yes |
| 2009 | 274 | 75% | No |
| 2010 | 301 | 82% | No |
| 2011 | 346 | 95% | Yes |
| 2012 | 358 | 98% | Yes |
| 2013 | 347 | 95% | Yes |
| 2014 | 351 | 96% | Yes |
| 2015 | 353 | 97% | Yes |
| 2016 | 352 | 96% | Yes |
| 2017 | 342 | 94% | Yes |
| 2018 | 347 | 95% | Yes |
| 2019 | 337 | 92% | Yes |
| 2020 | 359 | 98% | Yes |
| 2021 | 351 | 96% | Yes |
| 2022 | 340 | 93% | Yes |
| 2023 | 354 | 97% | Yes |
| 2024 | 317 | 87% | No |
| 2025 | 22 | 6% | No |
Latest Records
0No records were set at this station in the latest data.
Extremes by Year
1973 to 2025| Measure | Record | Year of the record | Median year | Years with a value |
|---|---|---|---|---|
| Hottest day (TXx) | 44.4 C (111.9 F) | 2021 | 41.8 C (107.2 F) | 45 |
| Coldest night (TNn) | -12.6 C (9.3 F) | 2008 | -5.0 C (23.0 F) | 45 |
| Wettest day (Rx1day) | 119.1 mm (4.7 in) | 2004 | 17.5 mm (0.7 in) | 37 |
| Wettest five days (Rx5day) | 119.1 mm (4.7 in) | 2004 | 23.3 mm (0.9 in) | 34 |
| Longest dry spell (CDD) | 190 days | 2016 | 41 days | 37 |
Hottest day (TXx)
| Year | Hottest day (TXx) |
|---|---|
| 1973 | 42.0 C (107.6 F) |
| 1974 | 37.0 C (98.6 F) |
| 1975 | 40.0 C (104.0 F) |
| 1976 | 41.0 C (105.8 F) |
| 1977 | 41.0 C (105.8 F) |
| 1978 | 42.0 C (107.6 F) |
| 1979 | 41.0 C (105.8 F) |
| 1980 | 41.0 C (105.8 F) |
| 1989 | 37.6 C (99.7 F) |
| 1990 | 39.6 C (103.3 F) |
| 1991 | 41.2 C (106.2 F) |
| 1992 | 40.8 C (105.4 F) |
| 1993 | 36.2 C (97.2 F) |
| 1994 | 38.0 C (100.4 F) |
| 1995 | 28.4 C (83.1 F) |
| 1996 | 31.2 C (88.2 F) |
| 1997 | 36.8 C (98.2 F) |
| 1998 | 10.4 C (50.7 F) |
| 1999 | 34.6 C (94.3 F) |
| 2000 | 39.6 C (103.3 F) |
| 2001 | 42.0 C (107.6 F) |
| 2002 | 42.0 C (107.6 F) |
| 2003 | 35.6 C (96.1 F) |
| 2004 | 41.4 C (106.5 F) |
| 2005 | 42.4 C (108.3 F) |
| 2006 | 43.0 C (109.4 F) |
| 2007 | 41.8 C (107.2 F) |
| 2008 | 42.2 C (108.0 F) |
| 2009 | 42.0 C (107.6 F) |
| 2010 | 42.0 C (107.6 F) |
| 2011 | 43.2 C (109.8 F) |
| 2012 | 42.2 C (108.0 F) |
| 2013 | 43.2 C (109.8 F) |
| 2014 | 43.0 C (109.4 F) |
| 2015 | 42.6 C (108.7 F) |
| 2016 | 42.4 C (108.3 F) |
| 2017 | 41.4 C (106.5 F) |
| 2018 | 43.0 C (109.4 F) |
| 2019 | 43.0 C (109.4 F) |
| 2020 | 41.0 C (105.8 F) |
| 2021 | 44.4 C (111.9 F) |
| 2022 | 43.0 C (109.4 F) |
| 2023 | 42.4 C (108.3 F) |
| 2024 | 44.0 C (111.2 F) |
| 2025 | 42.0 C (107.6 F) |
Coldest night (TNn)
| Year | Coldest night (TNn) |
|---|---|
| 1973 | -9.0 C (15.8 F) |
| 1974 | -5.0 C (23.0 F) |
| 1975 | -3.0 C (26.6 F) |
| 1976 | -5.0 C (23.0 F) |
| 1977 | -2.0 C (28.4 F) |
| 1978 | -6.0 C (21.2 F) |
| 1979 | -7.0 C (19.4 F) |
| 1980 | -10.0 C (14.0 F) |
| 1989 | -7.0 C (19.4 F) |
| 1990 | -5.2 C (22.6 F) |
| 1991 | -4.0 C (24.8 F) |
| 1992 | -6.4 C (20.5 F) |
| 1993 | 1.2 C (34.2 F) |
| 1994 | -1.2 C (29.8 F) |
| 1995 | 11.4 C (52.5 F) |
| 1996 | 10.6 C (51.1 F) |
| 1997 | 0.2 C (32.4 F) |
| 1998 | -2.8 C (27.0 F) |
| 1999 | -0.6 C (30.9 F) |
| 2000 | -2.2 C (28.0 F) |
| 2001 | -3.4 C (25.9 F) |
| 2002 | -3.8 C (25.2 F) |
| 2003 | -5.6 C (21.9 F) |
| 2004 | -3.0 C (26.6 F) |
| 2005 | -6.2 C (20.8 F) |
| 2006 | -6.6 C (20.1 F) |
| 2007 | -10.2 C (13.6 F) |
| 2008 | -12.6 C (9.3 F) |
| 2009 | -4.8 C (23.4 F) |
| 2010 | -4.4 C (24.1 F) |
| 2011 | -5.0 C (23.0 F) |
| 2012 | -6.0 C (21.2 F) |
| 2013 | -7.0 C (19.4 F) |
| 2014 | -8.4 C (16.9 F) |
| 2015 | -3.6 C (25.5 F) |
| 2016 | -9.0 C (15.8 F) |
| 2017 | -3.8 C (25.2 F) |
| 2018 | -5.4 C (22.3 F) |
| 2019 | -2.4 C (27.7 F) |
| 2020 | -8.8 C (16.2 F) |
| 2021 | -6.0 C (21.2 F) |
| 2022 | -6.0 C (21.2 F) |
| 2023 | -10.6 C (12.9 F) |
| 2024 | -5.3 C (22.5 F) |
| 2025 | -4.8 C (23.4 F) |
Wettest day (Rx1day)
| Year | Wettest day (Rx1day) |
|---|---|
| 1973 | n/a |
| 1974 | n/a |
| 1975 | n/a |
| 1976 | n/a |
| 1977 | n/a |
| 1978 | n/a |
| 1979 | n/a |
| 1980 | n/a |
| 1989 | 0.0 mm (0.00 in) |
| 1990 | 80.0 mm (3.1 in) |
| 1991 | 88.9 mm (3.5 in) |
| 1992 | 84.1 mm (3.3 in) |
| 1993 | 3.0 mm (0.12 in) |
| 1994 | 19.1 mm (0.8 in) |
| 1995 | 6.1 mm (0.24 in) |
| 1996 | 24.9 mm (1.0 in) |
| 1997 | 9.1 mm (0.36 in) |
| 1998 | 10.9 mm (0.4 in) |
| 1999 | 9.9 mm (0.39 in) |
| 2000 | 10.4 mm (0.4 in) |
| 2001 | 10.4 mm (0.4 in) |
| 2002 | 9.9 mm (0.39 in) |
| 2003 | 18.0 mm (0.7 in) |
| 2004 | 119.1 mm (4.7 in) |
| 2005 | 15.2 mm (0.6 in) |
| 2006 | 26.4 mm (1.0 in) |
| 2007 | 26.2 mm (1.0 in) |
| 2008 | 10.4 mm (0.4 in) |
| 2009 | 17.8 mm (0.7 in) |
| 2010 | 23.9 mm (0.9 in) |
| 2011 | 17.5 mm (0.7 in) |
| 2012 | 44.5 mm (1.8 in) |
| 2013 | 20.8 mm (0.8 in) |
| 2014 | 16.0 mm (0.6 in) |
| 2015 | 32.0 mm (1.3 in) |
| 2016 | 29.7 mm (1.2 in) |
| 2017 | 11.7 mm (0.5 in) |
| 2018 | 17.0 mm (0.7 in) |
| 2019 | 30.0 mm (1.2 in) |
| 2020 | 15.5 mm (0.6 in) |
| 2021 | 25.4 mm (1.0 in) |
| 2022 | 7.1 mm (0.28 in) |
| 2023 | 19.6 mm (0.8 in) |
| 2024 | 11.9 mm (0.5 in) |
| 2025 | 2.5 mm (0.10 in) |
Wettest five days (Rx5day)
| Year | Wettest five days (Rx5day) |
|---|---|
| 1973 | n/a |
| 1974 | n/a |
| 1975 | n/a |
| 1976 | n/a |
| 1977 | n/a |
| 1978 | n/a |
| 1979 | n/a |
| 1980 | n/a |
| 1989 | n/a |
| 1990 | 0.0 mm (0.00 in) |
| 1991 | 14.0 mm (0.6 in) |
| 1992 | 21.4 mm (0.8 in) |
| 1993 | n/a |
| 1994 | 25.7 mm (1.0 in) |
| 1995 | 0.0 mm (0.00 in) |
| 1996 | 17.0 mm (0.7 in) |
| 1997 | 0.0 mm (0.00 in) |
| 1998 | 3.0 mm (0.12 in) |
| 1999 | n/a |
| 2000 | 9.9 mm (0.39 in) |
| 2001 | 10.4 mm (0.4 in) |
| 2002 | 5.8 mm (0.23 in) |
| 2003 | 33.0 mm (1.3 in) |
| 2004 | 119.1 mm (4.7 in) |
| 2005 | 24.1 mm (0.9 in) |
| 2006 | 39.4 mm (1.6 in) |
| 2007 | 28.9 mm (1.1 in) |
| 2008 | 9.1 mm (0.36 in) |
| 2009 | 23.9 mm (0.9 in) |
| 2010 | 25.4 mm (1.0 in) |
| 2011 | 29.2 mm (1.1 in) |
| 2012 | 48.8 mm (1.9 in) |
| 2013 | 34.0 mm (1.3 in) |
| 2014 | 16.0 mm (0.6 in) |
| 2015 | 34.8 mm (1.4 in) |
| 2016 | 29.7 mm (1.2 in) |
| 2017 | 17.5 mm (0.7 in) |
| 2018 | 19.5 mm (0.8 in) |
| 2019 | 33.0 mm (1.3 in) |
| 2020 | 23.4 mm (0.9 in) |
| 2021 | 31.7 mm (1.2 in) |
| 2022 | 23.1 mm (0.9 in) |
| 2023 | 19.6 mm (0.8 in) |
| 2024 | 24.3 mm (1.0 in) |
| 2025 | 1.0 mm (0.04 in) |
Longest dry spell (CDD)
| Year | Longest dry spell (CDD) |
|---|---|
| 1973 | n/a |
| 1974 | n/a |
| 1975 | n/a |
| 1976 | n/a |
| 1977 | n/a |
| 1978 | n/a |
| 1979 | n/a |
| 1980 | n/a |
| 1989 | 3 days |
| 1990 | 9 days |
| 1991 | 10 days |
| 1992 | 12 days |
| 1993 | 4 days |
| 1994 | 4 days |
| 1995 | 9 days |
| 1996 | 13 days |
| 1997 | 6 days |
| 1998 | 2 days |
| 1999 | 4 days |
| 2000 | 11 days |
| 2001 | 15 days |
| 2002 | 21 days |
| 2003 | 38 days |
| 2004 | 40 days |
| 2005 | 49 days |
| 2006 | 75 days |
| 2007 | 41 days |
| 2008 | 45 days |
| 2009 | 27 days |
| 2010 | 58 days |
| 2011 | 121 days |
| 2012 | 56 days |
| 2013 | 75 days |
| 2014 | 74 days |
| 2015 | 42 days |
| 2016 | 190 days |
| 2017 | 171 days |
| 2018 | 95 days |
| 2019 | 89 days |
| 2020 | 72 days |
| 2021 | 129 days |
| 2022 | 93 days |
| 2023 | 124 days |
| 2024 | 51 days |
| 2025 | 7 days |
Each chart shows one value per year; the dot marks the record year. TXx is the hottest daily maximum, TNn the coldest daily minimum, Rx1day and Rx5day the largest one-day and five-day rain totals, and CDD the longest run of days with less than 1 mm of rain. A year with missing days can understate an extreme.
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 2026-10-14 (14 October 2026). Records are computed by this site and are not official.
Data as of . Last revised (2025-12-31).