September
September · May · June
Russia · 1991–2020
September leads for comfortable weather in Roshni-Chu: typically 25.3°C by day, 13.7°C at night, with 47 mm of rain. Based on measured 1991–2020 NOAA station history.
September · May · June
August · July · June
October · April · May
The weakest month is January, scoring 5 against September’s 89 — days reach only 2.3°C, 22° below the 24°C the score treats as ideal.
Month by month
The bars show the comfort score. Day and night temperatures come from daily observed highs and lows; rain is the historical monthly estimate.
| Month | Day | Night | Rain | Wet days | Daylight | Comfort | Coverage |
|---|---|---|---|---|---|---|---|
| January | 2.3°C | -4.2°C | 29 mm | 6.5 | 9 h 19 | 5 | Good coverage |
| February | 3.3°C | -4°C | 23 mm | 6.1 | 10 h 27 | 5 | Good coverage |
| March | 10.2°C | 0.9°C | 34 mm | 7.3 | 11 h 47 | 25 | Good coverage |
| April | 17.1°C | 5.6°C | 42 mm | 5.9 | 13 h 20 | 57 | Good coverage |
| May | 23.5°C | 11.6°C | 63 mm | 8.7 | 14 h 38 | 83 | Good coverage |
| June | 28.1°C | 15.9°C | 86 mm | 8.1 | 15 h 21 | 73 | Good coverage |
| July | 31.1°C | 18.5°C | 55 mm | 6.8 | 15 h 04 | 64 | Good coverage |
| August | 30.7°C | 18.1°C | 47 mm | 5.3 | 13 h 56 | 68 | Good coverage |
| September | 25.3°C | 13.7°C | 47 mm | 5.5 | 12 h 26 | 89 | Good coverage |
| October | 17.2°C | 7.4°C | 53 mm | 6.4 | 10 h 57 | 58 | Good coverage |
| November | 8.9°C | 1.5°C | 35 mm | 6.5 | 9 h 39 | 23 | Good coverage |
| December | 3.5°C | -2.5°C | 31 mm | 6.9 | 9 h 01 | 5 | Good coverage |
What has changed
Each bar compares the 2011–2025 daytime average for that month against the same month in 1961–1990, measured at the same station. Months where the older record is too thin to compare are left blank.
| Month | Record high | Record low | Wettest day | Wettest / driest month | Years |
|---|---|---|---|---|---|
| January | 15.5°C25 Jan 2007 | -31.5°C12 Jan 1940 | 21 mm25 Jan 1943 | 66 mm2010 · driest 4 mm in 1984 | 73 |
| February | 22.3°C17 Feb 2016 | -30.8°C2 Feb 1972 | 27 mm18 Feb 2016 | 53 mm1975 · driest 2 mm in 2017 | 74 |
| March | 32.9°C16 Mar 2013 | -19.1°C9 Mar 1985 | 30 mm27 Mar 1964 | 62 mm1964 · driest 2 mm in 1951 | 73 |
| April | 33.7°C13 Apr 1970 | -7.6°C3 Apr 1948 | 46 mm26 Apr 1978 | 107 mm1978 · driest 3 mm in 1957 | 73 |
| May | 38.1°C15 May 1961 | -3.1°C8 May 1949 | 69 mm26 May 2012 | 165 mm2016 · driest 17 mm in 1949 | 74 |
| June | 39.1°C25 Jun 1956 | 5.6°C5 Jun 1967 | 78 mm23 Jun 1953 | 207 mm2002 · driest 1 mm in 1986 | 74 |
| July | 42.0°C26 Jul 2001 | 9.2°C12 Jul 1992 | 72 mm12 Jul 1958 | 186 mm1958 · driest 3 mm in 1949 | 73 |
| August | 41.4°C7 Aug 1940 | 5.0°C30 Aug 1950 | 72 mm6 Aug 1956 | 132 mm2007 · driest 3 mm in 1979 | 73 |
| September | 40.7°C1 Sep 2010 | -2.7°C26 Sep 1956 | 90 mm2 Sep 1956 | 190 mm2009 · driest 4 mm in 1940 | 73 |
| October | 32.5°C19 Oct 1973 | -9.6°C31 Oct 1958 | 54 mm13 Oct 2011 | 152 mm2011 · driest 0 mm in 1974 | 73 |
| November | 23.7°C1 Nov 1992 | -23.5°C28 Nov 1953 | 25 mm13 Nov 1952 | 104 mm2009 · driest 2 mm in 1949 | 73 |
| December | 18.0°C4 Dec 1961 | -26.6°C20 Dec 1946 | 31 mm11 Dec 2012 | 94 mm2012 · driest 4 mm in 1944 | 73 |
| Month | Days 25°C+ | Days 30°C+ | Frost nights | Heavy rain (10 mm+) |
|---|---|---|---|---|
| January | 0 | 0 | 26 | <1 |
| February | 0 | 0 | 21 | <1 |
| March | <1 | <1 | 12 | <1 |
| April | 2 | <1 | 2 | 1 |
| May | 12 | 2 | <1 | 2 |
| June | 24 | 11 | 0 | 3 |
| July | 30 | 19 | 0 | 2 |
| August | 28 | 19 | 0 | 2 |
| September | 17 | 4 | 0 | 1 |
| October | 2 | <1 | 1 | 2 |
| November | 0 | 0 | 10 | 1 |
| December | 0 | 0 | 21 | <1 |
| Month | Warm & dry days | Wet days | Washouts | Week with 3+ wet days | Daytime mean has ranged |
|---|---|---|---|---|---|
| January | 0% | 17% | <1% | 13% | -2.4–4.2°C |
| February | <1% | 19% | <1% | 15% | -1.5–6.2°C |
| March | 3% | 19% | 1% | 15% | 5.2–12.3°C |
| April | 33% | 17% | 3% | 16% | 14.5–21.4°C |
| May | 65% | 24% | 6% | 26% | 21.3–26.1°C |
| June | 73% | 26% | 8% | 27% | 26.2–30.0°C |
| July | 79% | 21% | 6% | 18% | 28.6–32.8°C |
| August | 82% | 18% | 5% | 14% | 27.8–32.7°C |
| September | 74% | 17% | 4% | 13% | 22.2–27.5°C |
| October | 28% | 19% | 3% | 17% | 14.0–20.0°C |
| November | 1% | 20% | 2% | 20% | 6.2–11.2°C |
| December | 0% | 20% | <1% | 16% | -0.1–5.7°C |
A warm and dry day reaches 20°C with under 1 mm of rain; a wet day gets 1 mm or more; a washout gets 10 mm or more. The week column is the share of seven-day stretches in that month, across the station’s whole daily record, that contained three or more wet days — the odds a week-long trip is rained on repeatedly, counted rather than modelled. The last column is the 10th to 90th percentile of that month’s daytime average across individual years: a narrow band means the average is what you will get, a wide one means the average is a midpoint between years that felt quite different.
The evidence behind this page