September
September · August · June
79climate match
United States · 1991–2020
Best time to visit
Welton.
September leads for comfortable weather in Welton: typically 23.9°C by day, 10.1°C at night, with 95 mm of rain. Based on measured 1991–2020 NOAA station history.
Best comfortSeptember
Typical high23.9°C
Typical low10.1°C
Rain in September95 mm
July
July · August · June
66climate match
September
September · May · October
73climate match
The weakest month is January, scoring 5 against September’s 79 — days reach only -2.7°C, 27° below the 24°C the score treats as ideal.
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
5-2.7° / -12.2°
Feb
5-0.2° / -10.2°
Mar
57.1° / -3.9°
Apr
3515.1° / 2°
May
6421.5° / 8.8°
Jun
7226.5° / 14.7°
Jul
6928.1° / 16.4°
Aug
7627.2° / 15.1°
Sep
7923.9° / 10.1°
Oct
4716.7° / 3.6°
Nov
97.7° / -3°
Dec
50.4° / -8.5°
| Month | Day | Night | Rain | Wet days | Daylight | Comfort | Coverage |
|---|---|---|---|---|---|---|---|
| January | -2.7°C | -12.2°C | 34 mm | 5.9 | 9 h 26 | 5 | Strong coverage |
| February | -0.2°C | -10.2°C | 41 mm | 5.8 | 10 h 31 | 5 | Strong coverage |
| March | 7.1°C | -3.9°C | 54 mm | 6.8 | 11 h 48 | 5 | Strong coverage |
| April | 15.1°C | 2°C | 87 mm | 8.7 | 13 h 17 | 35 | Strong coverage |
| May | 21.5°C | 8.8°C | 108 mm | 10.1 | 14 h 32 | 64 | Strong coverage |
| June | 26.5°C | 14.7°C | 128 mm | 10 | 15 h 12 | 72 | Strong coverage |
| July | 28.1°C | 16.4°C | 106 mm | 8.3 | 14 h 56 | 69 | Strong coverage |
| August | 27.2°C | 15.1°C | 105 mm | 7.4 | 13 h 52 | 76 | Strong coverage |
| September | 23.9°C | 10.1°C | 95 mm | 7 | 12 h 26 | 79 | Strong coverage |
| October | 16.7°C | 3.6°C | 74 mm | 6.8 | 11 h 00 | 47 | Strong coverage |
| November | 7.7°C | -3°C | 54 mm | 5.9 | 9 h 45 | 9 | Strong coverage |
| December | 0.4°C | -8.5°C | 46 mm | 6.4 | 9 h 08 | 5 | Strong coverage |
What has changed
Welton runs -0.1°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
+0.2
Feb
-0.8
Mar
+0.4
Apr
-1.2
May
-0.5
Jun
-0.2
Jul
-0.8
Aug
-0.4
Sep
+1.0
Oct
-0.4
Nov
-0.1
Dec
+2.0
| Month | Record high | Record low | Wettest day | Wettest / driest month | Years |
|---|---|---|---|---|---|
| January | 16.7°C1 Jan 1897 | -38.3°C17 Jan 2009 | 56 mm12 Jan 1960 | 107 mm1916 · driest 0 mm in 1948 | 112 |
| February | 23.3°C28 Feb 2024 | -36.7°C4 Feb 1996 | 52 mm9 Feb 2001 | 107 mm2008 · driest 0 mm in 1948 | 113 |
| March | 29.4°C29 Mar 1986 | -29.4°C1 Mar 2015 | 62 mm25 Mar 1945 | 137 mm1991 · driest 0 mm in 1948 | 109 |
| April | 33.9°C22 Apr 1980 | -15.0°C7 Apr 1982 | 94 mm18 Apr 2013 | 195 mm2013 · driest 1 mm in 1915 | 111 |
| May | 40.6°C31 May 1934 | -6.1°C3 May 2005 | 73 mm3 May 1919 | 262 mm1996 · driest 10 mm in 1992 | 114 |
| June | 40.0°C1 Jun 1934 | 0.6°C12 Jun 1903 | 122 mm4 Jun 2002 | 287 mm1981 · driest 0 mm in 1948 | 114 |
| July | 42.2°C12 Jul 1936 | 3.9°C2 Jul 1904 | 109 mm4 Jul 2007 | 224 mm1902 · driest 11 mm in 1936 | 112 |
| August | 42.2°C18 Aug 1936 | 1.1°C29 Aug 1934 | 176 mm30 Aug 1981 | 367 mm1981 · driest 17 mm in 1930 | 114 |
| September | 38.9°C7 Sep 1939 | -8.3°C30 Sep 1899 | 127 mm13 Sep 1961 | 306 mm1986 · driest 6 mm in 1979 | 113 |
| October | 34.4°C4 Oct 1997 | -16.7°C30 Oct 1925 | 89 mm21 Oct 1943 | 195 mm2018 · driest 0 mm in 1952 | 112 |
| November | 26.7°C1 Nov 1933 | -22.2°C28 Nov 1930 | 79 mm17 Nov 1952 | 189 mm1931 · driest 0 mm in 1917 | 110 |
| December | 20.0°C5 Dec 1998 | -32.8°C21 Dec 1963 | 68 mm15 Dec 1971 | 115 mm1982 · driest 2 mm in 1939 | 108 |
| Month | Days 25°C+ | Days 30°C+ | Frost nights | Heavy rain (10 mm+) | Snow days |
|---|---|---|---|---|---|
| January | 0 | 0 | 30 | <1 | 6 |
| February | 0 | 0 | 27 | 1 | 5 |
| March | <1 | 0 | 24 | 2 | 3 |
| April | 3 | <1 | 10 | 3 | <1 |
| May | 10 | 2 | <1 | 4 | 0 |
| June | 21 | 7 | 0 | 4 | 0 |
| July | 26 | 10 | 0 | 3 | 0 |
| August | 24 | 7 | 0 | 3 | 0 |
| September | 14 | 4 | <1 | 3 | 0 |
| October | 4 | <1 | 9 | 2 | <1 |
| November | <1 | 0 | 22 | 2 | 1 |
| December | 0 | 0 | 28 | 1 | 5 |
| Month | Warm & dry days | Wet days | Washouts | Week with 3+ wet days | Daytime mean has ranged |
|---|---|---|---|---|---|
| January | 0% | 17% | 3% | 12% | -6.1–2.1°C |
| February | <1% | 18% | 4% | 13% | -3.8–4.9°C |
| March | 4% | 23% | 6% | 24% | 3.4–10.8°C |
| April | 20% | 28% | 9% | 33% | 12.5–18.5°C |
| May | 47% | 31% | 11% | 39% | 19.4–24.8°C |
| June | 66% | 31% | 13% | 37% | 24.4–28.9°C |
| July | 74% | 26% | 10% | 26% | 27.2–31.5°C |
| August | 76% | 24% | 10% | 25% | 26.1–30.0°C |
| September | 63% | 24% | 10% | 25% | 22.0–26.5°C |
| October | 31% | 22% | 8% | 22% | 15.0–20.7°C |
| November | 4% | 19% | 6% | 14% | 4.8–11.3°C |
| December | 0% | 18% | 4% | 14% | -3.1–4.6°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 4881189
- NOAA station
- USC00135131 · MAQUOKETA
- Station distance
- 19.7 km from the place centre
- Climate period
- 1991–2020
- Minimum month coverage
- 28 usable years
- Daylight
- Calculated from latitude 41.91°, 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.