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Has the climate in Bojnūrd changed?

Bojnūrd has warmed about 4.8°F between 1971 and 2024.

About 0.9°F per decade, measured from Bojnūrd's official daily weather records, 1971–2024. Individual years still bounce around — some recent ones came in cool — but the long-term line has clearly risen.

Is that a lot? Bojnūrd's warming is broadly in line with other cities in Iran — neither unusually fast nor unusually slow.

What has actually changed

Each card compares the 1970s (the first ten years of the record) with recent years (the last ten) — the same span the headline and the chart use.

Freezing nights
38 fewer nights
1970s
60 / yr
Recent
22 / yr
Milder winters — fewer frosts
Average temperature
+3.1°F
1970s
61.5°F
Recent
64.5°F
A steady upward drift
Hot days above 90°F
22 fewer days
1970s
114 / yr
Recent
92 / yr
Slightly fewer hot days
Rainy days
32 fewer days
1970s
67 / yr
Recent
35 / yr
Drier on average

Bojnūrd's temperature, year by year

Average temperature for each year from 1971 to 2024.

57°59°61°63°65°67°1971: 62.9°F1972: 58.2°F1973: 61.8°F1974: 59.6°F1975: 62.4°F1976: 59.7°F1977: 61.5°F1978: 60.7°F1979: 62.3°F1980: 61.5°F1981: 62.7°F1982: 60.3°F1983: 63.8°F1984: 59.7°F1985: 62.1°F1986: 62.1°F1987: 62.7°F1988: 62.9°F1989: 63.4°F1990: 63.4°F1991: 62.4°F1992: 61.0°F1993: 61.1°F1994: 62.4°F1995: 64.3°F1996: 62.2°F1997: 63.8°F1998: 64.0°F1999: 64.4°F2000: 64.2°F2001: 64.2°F2002: 63.5°F2003: 62.2°F2004: 63.8°F2005: 64.4°F2006: 64.2°F2007: 63.3°F2008: 63.4°F2009: 63.5°F2010: 65.4°F2011: 62.8°F2012: 63.4°F2013: 65.2°F2014: 63.8°F2015: 65.0°F2016: 64.8°F2017: 64.4°F2018: 65.2°F2019: 65.2°F2020: 63.0°F2021: 65.9°F2022: 65.3°F2023: 67.0°F2024: 64.9°Flong-term trend1971198019902000201020202024
a warmer-than-average year a cooler-than-average year

Each bar is one year. Most recent years sit above the older ones. Some recent years still came in cool — warming is a slope, not a straight climb.

In day-to-day terms, that long-term shift shows up as about 23 fewer freezing nights a year and about 21 fewer days above 90°F compared with the 1970s.

When in the year the change shows up

How much warmer each month is now than in the 1970s. Useful if you garden or care about a particular season — otherwise the headline above already has the answer.

-1.0°-0.5°0.0°+0.5°+1.0°+1.5°+2.0°January: +1.5°F+1.5JFebruary: +1.6°F+1.6FMarch: +0.8°F+0.8MApril: +0.3°F+0.3AMay: -0.6°F-0.6MJune: -0.7°F-0.7JJuly: +0.1°F+0.1JAugust: +1.4°F+1.4ASeptember: +0.7°F+0.7SOctober: +1.9°F+1.9ONovember: +0.2°F+0.2NDecember: -0.5°F-0.5D

October has warmed the most — about 1.9°F. The warming runs across the whole year, not just one season.

Methodology & sources

Temperature — 1991–2020 normals computed from 18 years of daily observations at Ashgabat, a weather station, about 104 km from the city centre. The underlying daily records come from NOAA's global station network.

How we build these numbers →