September
September · June · August
United States · 1991–2020
September leads for comfortable weather in Lama: typically 24°C by day, 5.2°C at night, with 38 mm of rain. Based on measured 1991–2020 NOAA station history.
September · June · August
July · June · August
May · September · October
The weakest month is January, scoring 5 against September’s 79 — days reach only 2.7°C, 21° below the 24°C the score treats as ideal, and nights drop to -13.5°C.
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 | 2.7°C | -13.5°C | 18 mm | 3.9 | 9 h 54 | 5 | Strong coverage |
| February | 5.8°C | -10.1°C | 18 mm | 4 | 10 h 47 | 5 | Strong coverage |
| March | 11.8°C | -6°C | 24 mm | 4.2 | 11 h 51 | 21 | Strong coverage |
| April | 16.6°C | -2.8°C | 26 mm | 4.5 | 13 h 05 | 42 | Strong coverage |
| May | 21.1°C | 1.6°C | 31 mm | 4.5 | 14 h 06 | 65 | Strong coverage |
| June | 26.8°C | 6.4°C | 21 mm | 3.4 | 14 h 39 | 75 | Strong coverage |
| July | 28.4°C | 9.4°C | 43 mm | 8.4 | 14 h 26 | 69 | Strong coverage |
| August | 27.2°C | 8.9°C | 54 mm | 9.1 | 13 h 33 | 70 | Strong coverage |
| September | 24°C | 5.2°C | 38 mm | 5.5 | 12 h 22 | 79 | Strong coverage |
| October | 18.1°C | -1.2°C | 31 mm | 4.4 | 11 h 11 | 50 | Strong coverage |
| November | 10.4°C | -7.3°C | 23 mm | 3.8 | 10 h 10 | 14 | Strong coverage |
| December | 3.2°C | -13.1°C | 23 mm | 4.4 | 9 h 40 | 5 | Strong 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 | 17.2°C16 Jan 2000 | -36.7°C29 Jan 1919 | 32 mm1 Jan 1974 | 54 mm1979 · driest 0 mm in 1931 | 108 |
| February | 18.3°C26 Feb 1986 | -36.1°C8 Feb 1933 | 28 mm7 Feb 1937 | 46 mm1948 · driest 0 mm in 2014 | 107 |
| March | 25.0°C30 Mar 1933 | -26.7°C6 Mar 1939 | 41 mm12 Mar 1985 | 68 mm1990 · driest 0 mm in 1971 | 104 |
| April | 27.8°C29 Apr 1981 | -21.1°C4 Apr 1945 | 44 mm5 Apr 1912 | 159 mm1942 · driest 0 mm in 1989 | 105 |
| May | 35.0°C31 May 2002 | -11.7°C12 May 1922 | 56 mm8 May 1936 | 115 mm1934 · driest 0 mm in 1998 | 105 |
| June | 37.8°C19 Jun 1924 | -5.6°C1 Jun 1919 | 37 mm4 Jun 1950 | 87 mm1921 · driest 0 mm in 1980 | 106 |
| July | 36.1°C14 Jul 1933 | -3.9°C1 Jul 2020 | 41 mm21 Jul 1921 | 121 mm1911 · driest 11 mm in 1980 | 108 |
| August | 36.7°C2 Aug 1937 | -1.1°C9 Aug 1928 | 52 mm19 Aug 1943 | 170 mm1993 · driest 2 mm in 2021 | 105 |
| September | 35.6°C2 Sep 1927 | -7.8°C17 Sep 1928 | 51 mm23 Sep 1934 | 103 mm1923 · driest 0 mm in 1957 | 108 |
| October | 31.1°C12 Oct 1933 | -19.4°C22 Oct 1996 | 46 mm15 Oct 1944 | 103 mm1957 · driest 0 mm in 1988 | 106 |
| November | 25.0°C5 Nov 1928 | -28.9°C27 Nov 1911 | 27 mm19 Nov 1975 | 73 mm1991 · driest 0 mm in 2021 | 103 |
| December | 20.0°C16 Dec 1939 | -34.4°C23 Dec 1990 | 39 mm5 Dec 1913 | 112 mm2007 · driest 0 mm in 1958 | 105 |
| Month | Days 25°C+ | Days 30°C+ | Frost nights | Heavy rain (10 mm+) | Snow days |
|---|---|---|---|---|---|
| January | 0 | 0 | 30 | <1 | 4 |
| February | 0 | 0 | 28 | <1 | 4 |
| March | 0 | 0 | 29 | <1 | 2 |
| April | <1 | 0 | 23 | <1 | 2 |
| May | 5 | <1 | 10 | <1 | <1 |
| June | 19 | 6 | 1 | <1 | 0 |
| July | 27 | 10 | <1 | 1 | 0 |
| August | 23 | 5 | 0 | 1 | 0 |
| September | 14 | 1 | 3 | 1 | <1 |
| October | 2 | 0 | 19 | 1 | 1 |
| November | 0 | 0 | 27 | <1 | 2 |
| December | 0 | 0 | 30 | <1 | 4 |
The best month has moved. On the 1961–1990 numbers the strongest month here was June (scoring 79); on 2011–2025 it is September (79). 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% | 11% | <1% | 6% | -1.6–6.9°C |
| February | 0% | 12% | <1% | 7% | 1.5–9.0°C |
| March | 2% | 13% | 2% | 7% | 6.9–13.3°C |
| April | 21% | 12% | 2% | 8% | 12.5–19.2°C |
| May | 57% | 14% | 3% | 12% | 18.1–23.2°C |
| June | 83% | 13% | 2% | 11% | 23.3–28.1°C |
| July | 73% | 27% | 5% | 31% | 26.1–29.6°C |
| August | 72% | 27% | 5% | 28% | 24.9–28.9°C |
| September | 74% | 18% | 4% | 16% | 21.0–26.3°C |
| October | 38% | 13% | 3% | 9% | 15.1–20.3°C |
| November | 2% | 10% | 1% | 4% | 6.5–14.3°C |
| December | 0% | 11% | 2% | 6% | -0.6–7.2°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