September
September · August · June
82climate match
United States · 1991–2020
Best time to visit
Lamar.
September leads for comfortable weather in Lamar: typically 26.3°C by day, 9.4°C at night, with 33 mm of rain. Based on measured 1991–2020 NOAA station history.
Best comfortSeptember
Typical high26.3°C
Typical low9.4°C
Rain in September33 mm
August
August · July · June
71climate match
September
September · October · May
79climate match
The weakest month is January, scoring 5 against September’s 82 — days reach only 5.1°C, 19° below the 24°C the score treats as ideal, and nights drop to -10°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
55.1° / -10°
Feb
56.4° / -8.9°
Mar
2612.4° / -4.2°
Apr
4617° / 0.6°
May
6922.2° / 7.5°
Jun
7028.8° / 13.4°
Jul
6232° / 16.4°
Aug
7130.6° / 15.1°
Sep
8226.3° / 9.4°
Oct
5718.7° / 1.6°
Nov
2211.2° / -4.9°
Dec
55.4° / -9.5°
| Month | Day | Night | Rain | Wet days | Daylight | Comfort | Coverage |
|---|---|---|---|---|---|---|---|
| January | 5.1°C | -10°C | 9 mm | 1.8 | 9 h 34 | 5 | Strong coverage |
| February | 6.4°C | -8.9°C | 14 mm | 3 | 10 h 35 | 5 | Strong coverage |
| March | 12.4°C | -4.2°C | 25 mm | 4.2 | 11 h 49 | 26 | Strong coverage |
| April | 17°C | 0.6°C | 49 mm | 5.8 | 13 h 14 | 46 | Strong coverage |
| May | 22.2°C | 7.5°C | 81 mm | 8 | 14 h 25 | 69 | Strong coverage |
| June | 28.8°C | 13.4°C | 89 mm | 7.4 | 15 h 03 | 70 | Strong coverage |
| July | 32°C | 16.4°C | 73 mm | 6.6 | 14 h 48 | 62 | Strong coverage |
| August | 30.6°C | 15.1°C | 64 mm | 6 | 13 h 47 | 71 | Strong coverage |
| September | 26.3°C | 9.4°C | 33 mm | 3.8 | 12 h 25 | 82 | Strong coverage |
| October | 18.7°C | 1.6°C | 39 mm | 4.4 | 11 h 03 | 57 | Strong coverage |
| November | 11.2°C | -4.9°C | 13 mm | 2.3 | 9 h 52 | 22 | Strong coverage |
| December | 5.4°C | -9.5°C | 11 mm | 2.1 | 9 h 17 | 5 | Strong coverage |
What has changed
Lamar runs +0.4°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
+0.9
Feb
-2.3
Mar
+1.4
Apr
-0.9
May
-1.0
Jun
+1.1
Jul
0.0
Aug
-0.1
Sep
+1.8
Oct
-0.5
Nov
+2.0
Dec
+2.1
| Month | Record high | Record low | Wettest day | Wettest / driest month | Years |
|---|---|---|---|---|---|
| January | 26.1°C28 Jan 2015 | -35.6°C2 Jan 1911 | 41 mm27 Jan 1944 | 44 mm1944 · driest 0 mm in 1986 | 130 |
| February | 27.2°C3 Feb 2020 | -37.2°C12 Feb 1899 | 24 mm27 Feb 1903 | 70 mm1903 · driest 0 mm in 1967 | 130 |
| March | 34.4°C22 Mar 2026 | -31.1°C3 Mar 1960 | 58 mm14 Mar 2021 | 156 mm1981 · driest 3 mm in 1968 | 129 |
| April | 35.0°C30 Apr 1992 | -18.3°C1 Apr 1936 | 116 mm19 Apr 1971 | 171 mm1971 · driest 2 mm in 2023 | 129 |
| May | 38.9°C29 May 1934 | -9.4°C1 May 1909 | 99 mm12 May 2023 | 233 mm1935 · driest 2 mm in 1966 | 129 |
| June | 43.3°C27 Jun 2012 | -1.7°C2 Jun 1917 | 177 mm13 Jun 1919 | 349 mm1919 · driest 2 mm in 1952 | 127 |
| July | 46.7°C20 Jul 1934 | 2.8°C5 Jul 1910 | 84 mm23 Jul 1929 | 186 mm2018 · driest 9 mm in 1934 | 129 |
| August | 43.3°C8 Aug 1934 | 1.1°C25 Aug 1910 | 114 mm20 Aug 2021 | 244 mm1933 · driest 1 mm in 2022 | 129 |
| September | 43.3°C5 Sep 1931 | -7.2°C25 Sep 1926 | 146 mm2 Sep 1942 | 174 mm1942 · driest 0 mm in 1983 | 128 |
| October | 35.6°C5 Oct 1947 | -19.4°C22 Oct 1917 | 79 mm19 Oct 1908 | 107 mm1930 · driest 0 mm in 1933 | 129 |
| November | 28.9°C7 Nov 2020 | -27.8°C27 Nov 1896 | 69 mm20 Nov 1930 | 85 mm1930 · driest 0 mm in 1989 | 129 |
| December | 26.1°C6 Dec 1939 | -36.7°C22 Dec 1989 | 53 mm5 Dec 1913 | 98 mm1913 · driest 0 mm in 2001 | 130 |
| Month | Days 25°C+ | Days 30°C+ | Frost nights | Heavy rain (10 mm+) | Snow days |
|---|---|---|---|---|---|
| January | 0 | 0 | 30 | <1 | 3 |
| February | <1 | 0 | 27 | <1 | 4 |
| March | 2 | <1 | 25 | <1 | 3 |
| April | 4 | <1 | 14 | 1 | 2 |
| May | 12 | 3 | 2 | 2 | <1 |
| June | 23 | 13 | 0 | 2 | 0 |
| July | 28 | 21 | 0 | 2 | 0 |
| August | 27 | 18 | 0 | 2 | 0 |
| September | 19 | 9 | <1 | <1 | <1 |
| October | 7 | 1 | 11 | 1 | <1 |
| November | 1 | 0 | 26 | <1 | 2 |
| December | 0 | 0 | 30 | <1 | 3 |
| Month | Warm & dry days | Wet days | Washouts | Week with 3+ wet days | Daytime mean has ranged |
|---|---|---|---|---|---|
| January | <1% | 8% | <1% | 2% | 0.0–8.9°C |
| February | 4% | 10% | 1% | 6% | 1.2–11.0°C |
| March | 17% | 15% | 3% | 10% | 7.6–15.8°C |
| April | 38% | 19% | 6% | 17% | 14.4–20.8°C |
| May | 57% | 26% | 9% | 30% | 19.9–25.5°C |
| June | 72% | 27% | 9% | 27% | 26.0–31.7°C |
| July | 78% | 22% | 8% | 21% | 29.7–34.8°C |
| August | 80% | 19% | 6% | 15% | 29.0–33.8°C |
| September | 78% | 14% | 4% | 10% | 23.9–29.6°C |
| October | 52% | 11% | 3% | 7% | 16.9–23.0°C |
| November | 14% | 9% | 2% | 3% | 8.0–14.8°C |
| December | 1% | 8% | 1% | 4% | 1.8–9.1°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 5696900
- NOAA station
- USC00254110 · IMPERIAL
- Station distance
- 28.5 km from the place centre
- Climate period
- 1991–2020
- Minimum month coverage
- 27 usable years
- Daylight
- Calculated from latitude 40.57°, 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.