Djelfa has warmed about 4°F between 1973 and 2024.
About 0.9°F per decade, measured from Djelfa's official daily weather records, 1973–2024. Individual years still bounce around — some recent ones came in cool — but the long-term line has clearly risen.
Is that a lot? Djelfa's warming is broadly in line with other cities in Algeria — 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
10 fewer nights
1970s
43 / yr
→
Recent
33 / yr
Milder winters — fewer frosts
Average temperature
+2.8°F
1970s
59.8°F
→
Recent
62.7°F
A steady upward drift
Hot days above 90°F
10 fewer days
1970s
53 / yr
→
Recent
43 / yr
Slightly fewer hot days
Rainy days
37 more days
1970s
20 / yr
→
Recent
57 / yr
Wetter on average
Djelfa's temperature, year by year
Average temperature for each year from 1973 to 2024.
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.
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.
October has warmed the most — about 2.3°F. The warming runs across the whole year, not just one season.
Methodology & sources
Temperature — 1991–2020 normals computed from 23 years of daily observations at Djelfa/tletsi, a weather station, about 2 km from the city centre. The underlying daily records come from NOAA's global station network.