September
September · May · June
84climate match
Mongolia · 1991–2020
Best time to visit
Borhoyn Tal.
September leads for comfortable weather in Borhoyn Tal: typically 22.7°C by day, 8.4°C at night, with 12 mm of rain. Based on measured 1991–2020 NOAA station history.
Best comfortSeptember
Typical high22.7°C
Typical low8.4°C
Rain in September12 mm
July
July · August · June
83climate match
September
September · May · April
89climate match
The weakest month is January, scoring 5 against September’s 84 — days reach only -10°C, 34° below the 24°C the score treats as ideal, and nights drop to -22.8°C.
Month by month
The whole year,
without the guesswork.
The bars show the comfort score. Day and night temperatures come from daily observed highs and lows; rain is the historical monthly estimate.
Jan
5-10° / -22.8°
Feb
5-3.2° / -18.3°
Mar
55.5° / -9.5°
Apr
4515.5° / -0.1°
May
8322.8° / 7.6°
Jun
8328.5° / 14.3°
Jul
7031° / 17.9°
Aug
8029.1° / 15.8°
Sep
8422.7° / 8.4°
Oct
3713.4° / -0.8°
Nov
51.7° / -11.2°
Dec
5-7.9° / -19.8°
| Month | Day | Night | Rain | Wet days | Daylight | Comfort | Coverage |
|---|---|---|---|---|---|---|---|
| January | -10°C | -22.8°C | 1 mm | 0.2 | 9 h 15 | 5 | Good coverage |
| February | -3.2°C | -18.3°C | 1 mm | 0.3 | 10 h 25 | 5 | Good coverage |
| March | 5.5°C | -9.5°C | 3 mm | 0.9 | 11 h 47 | 5 | Good coverage |
| April | 15.5°C | -0.1°C | 5 mm | 1.3 | 13 h 22 | 45 | Good coverage |
| May | 22.8°C | 7.6°C | 13 mm | 2.8 | 14 h 42 | 83 | Good coverage |
| June | 28.5°C | 14.3°C | 26 mm | 4.3 | 15 h 26 | 83 | Good coverage |
| July | 31°C | 17.9°C | 33 mm | 5.5 | 15 h 08 | 70 | Good coverage |
| August | 29.1°C | 15.8°C | 33 mm | 4.7 | 13 h 59 | 80 | Good coverage |
| September | 22.7°C | 8.4°C | 12 mm | 2.6 | 12 h 27 | 84 | Good coverage |
| October | 13.4°C | -0.8°C | 5 mm | 1.1 | 10 h 56 | 37 | Good coverage |
| November | 1.7°C | -11.2°C | 3 mm | 0.9 | 9 h 36 | 5 | Good coverage |
| December | -7.9°C | -19.8°C | 3 mm | 0.7 | 8 h 56 | 5 | Strong coverage |
What has changed
Borhoyn Tal runs +1.9°C
on the 1961–1990 baseline.
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.
Jan
+1.9
Feb
+2.8
Mar
+3.8
Apr
+2.9
May
+1.3
Jun
+1.7
Jul
+2.1
Aug
+2.4
Sep—
Oct
+1.4
Nov
+0.5
Dec
+0.6
| Month | Record high | Record low | Wettest day | Wettest / driest month | Years |
|---|---|---|---|---|---|
| January | 10.7°C7 Jan 1979 | -39.6°C5 Jan 1957 | 6 mm13 Jan 1958 | 9 mm1958 · driest 0 mm in 2009 | 71 |
| February | 15.2°C27 Feb 1992 | -38.0°C20 Feb 1968 | 20 mm21 Feb 2019 | 64 mm2019 · driest 0 mm in 2001 | 71 |
| March | 25.2°C15 Mar 1955 | -30.7°C11 Mar 1957 | 10 mm26 Mar 1991 | 17 mm1991 · driest 0 mm in 1963 | 71 |
| April | 32.5°C29 Apr 2020 | -18.0°C2 Apr 1962 | 19 mm27 Apr 1982 | 25 mm2018 · driest 0 mm in 2005 | 71 |
| May | 36.9°C22 May 2024 | -8.7°C5 May 1968 | 20 mm4 May 1985 | 41 mm2010 · driest 0 mm in 1969 | 71 |
| June | 39.6°C9 Jun 1961 | 2.2°C5 Jun 1962 | 34 mm28 Jun 1993 | 79 mm2012 · driest 1 mm in 1963 | 70 |
| July | 42.6°C28 Jul 2010 | 7.5°C11 Jul 1982 | 76 mm25 Jul 2021 | 145 mm2018 · driest 3 mm in 1966 | 71 |
| August | 39.9°C11 Aug 1972 | 0.8°C30 Aug 1972 | 75 mm28 Aug 1990 | 117 mm1996 · driest 0 mm in 2001 | 71 |
| September | 36.7°C1 Sep 1999 | -6.5°C25 Sep 1956 | 40 mm12 Sep 2024 | 100 mm1955 · driest 0 mm in 2001 | 69 |
| October | 27.9°C4 Oct 1987 | -18.9°C22 Oct 1974 | 24 mm1 Oct 1995 | 41 mm2016 · driest 0 mm in 2009 | 70 |
| November | 21.9°C1 Nov 2023 | -30.0°C30 Nov 1967 | 11 mm18 Nov 2020 | 13 mm2020 · driest 0 mm in 1977 | 69 |
| December | 9.9°C18 Dec 1997 | -40.2°C15 Dec 1956 | 10 mm8 Dec 2015 | 13 mm2015 · driest 0 mm in 1955 | 70 |
| Month | Days 25°C+ | Days 30°C+ | Frost nights | Heavy rain (10 mm+) |
|---|---|---|---|---|
| January | 0 | 0 | 29 | 0 |
| February | 0 | 0 | 27 | 0 |
| March | 0 | 0 | 29 | 0 |
| April | 2 | <1 | 16 | 0 |
| May | 11 | 3 | 1 | <1 |
| June | 24 | 12 | 0 | <1 |
| July | 29 | 18 | 0 | <1 |
| August | 26 | 13 | 0 | <1 |
| September | 11 | 2 | <1 | <1 |
| October | <1 | 0 | 17 | <1 |
| November | 0 | 0 | 28 | 0 |
| December | 0 | 0 | 30 | 0 |
The best month has moved. On the 1961–1990 numbers the strongest month here was August (scoring 86); on 2011–2025 it is May (85). Both are scored the same way, from the same station — only the climate underneath changed.
| Month | Warm & dry days | Wet days | Washouts | Week with 3+ wet days | Daytime mean has ranged |
|---|---|---|---|---|---|
| January | 0% | 2% | 0% | <1% | -15.0–-6.6°C |
| February | 0% | 2% | <1% | <1% | -9.9–0.6°C |
| March | 1% | 3% | <1% | 0% | 1.6–9.0°C |
| April | 23% | 5% | <1% | 1% | 12.5–18.5°C |
| May | 66% | 8% | <1% | 1% | 20.9–24.6°C |
| June | 85% | 14% | 2% | 8% | 26.2–30.3°C |
| July | 82% | 19% | 4% | 12% | 28.5–32.4°C |
| August | 81% | 19% | 3% | 13% | 26.2–30.4°C |
| September | 61% | 11% | 2% | 3% | 19.9–23.8°C |
| October | 13% | 5% | <1% | <1% | 11.0–15.4°C |
| November | <1% | 3% | <1% | <1% | -2.4–4.0°C |
| December | 0% | 1% | 0% | <1% | -11.7–-4.1°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
Nearby, measured,
and named.
- Place identity
- GeoNames 2032338
- NOAA station
- CHM00053068 · ERENHOT
- Station distance
- 10.8 km from the place centre
- Climate period
- 1991–2020
- Minimum month coverage
- 23 usable years
- Daylight
- Calculated from latitude 43.72°, mid-month, sunrise to sunset including refraction. Not a station measurement.
- Important limit
- Historical climate is not a forecast. Nearby stations can miss mountains, coasts, and local microclimates.