| Month | High | Low | Rain | Wet days | Score |
|---|---|---|---|---|---|
| January | -1.3° | -14.9° | 1.9mm | 1.7 | 27 |
| February | 3.7° | -10.5° | 1.8mm | 1.3 | 30 |
| March | 10.9° | -3.6° | 5.6mm | 2.1 | 58 |
| April | 18.5° | 3.6° | 3.9mm | 2 | 91 |
| May | 24.3° | 9.5° | 7.2mm | 3.5 | 93 |
| June | 28.5° | 13.9° | 10.3mm | 3.6 | 87 |
| July | 30.2° | 15.8° | 19.7mm | 6 | 75 |
| August | 28.8° | 13.9° | 13.3mm | 4.6 | 84 |
| September | 23.4° | 8.8° | 13.8mm | 3.3 | 93 |
| October | 16.3° | 1.8° | 3.5mm | 1.1 | 86 |
| November | 7.5° | -5.6° | 2.5mm | 1.5 | 46 |
| December | 0° | -13.1° | 2.3mm | 2.1 | 26 |
January in Jiuquan averages a daily high of -1.3°C with nights around -14.9°C. Rain is rare — about 1.7 wet days and 1.9mm across the month. A hard month to visit for comfort alone.
February in Jiuquan averages a daily high of 3.7°C with nights around -10.5°C. Rain is rare — about 1.3 wet days and 1.8mm across the month. A hard month to visit for comfort alone.
March in Jiuquan averages a daily high of 10.9°C with nights around -3.6°C. Rain is rare — about 2.1 wet days and 5.6mm across the month. Generally workable, with some weather to plan around.
April in Jiuquan averages a daily high of 18.5°C with nights around 3.6°C. Rain is rare — about 2 wet days and 3.9mm across the month. Comfortable conditions for being outdoors all day.
May in Jiuquan averages a daily high of 24.3°C with nights around 9.5°C. Expect roughly 3.5 wet days totalling 7.2mm. Comfortable conditions for being outdoors all day.
June in Jiuquan averages a daily high of 28.5°C with nights around 13.9°C. Expect roughly 3.6 wet days totalling 10.3mm. Comfortable conditions for being outdoors all day.
July in Jiuquan averages a daily high of 30.2°C with nights around 15.8°C. Expect roughly 6 wet days totalling 19.7mm. Comfortable conditions for being outdoors all day.
August in Jiuquan averages a daily high of 28.8°C with nights around 13.9°C. Expect roughly 4.6 wet days totalling 13.3mm. Comfortable conditions for being outdoors all day.
September in Jiuquan averages a daily high of 23.4°C with nights around 8.8°C. Expect roughly 3.3 wet days totalling 13.8mm. Comfortable conditions for being outdoors all day.
October in Jiuquan averages a daily high of 16.3°C with nights around 1.8°C. Rain is rare — about 1.1 wet days and 3.5mm across the month. Comfortable conditions for being outdoors all day.
November in Jiuquan averages a daily high of 7.5°C with nights around -5.6°C. Rain is rare — about 1.5 wet days and 2.5mm across the month. Demanding conditions — pack for it and plan indoor options.
December in Jiuquan averages a daily high of 0°C with nights around -13.1°C. Rain is rare — about 2.1 wet days and 2.3mm across the month. A hard month to visit for comfort alone.
Each month scores out of 100. It starts at 100 and loses points for daytime highs outside a 20–27°C band, for wet days, and for nights below 2°C. Nothing else is weighted in — no crowd data, no prices, no opinion. Jiuquan peaks at 93.
Based on 30 years of records, April–June scores highest for comfort in Jiuquan, balancing daytime temperature against rainfall.
July is the warmest, averaging a daily high of 30.2°C.
July is the wettest, averaging 19.7mm of rain across roughly 6 wet days.
January is the coolest month, with average daily highs around -1.3°C.