September
September · August · June
81climate match
United States · 1991–2020
Best time to visit
Ayrshire.
September leads for comfortable weather in Ayrshire: typically 23.9°C by day, 10.7°C at night, with 84 mm of rain. Based on measured 1991–2020 NOAA station history.
Best comfortSeptember
Typical high23.9°C
Typical low10.7°C
Rain in September84 mm
July
July · August · June
75climate match
September
September · May · October
73climate match
The weakest month is January, scoring 5 against September’s 81 — days reach only -3.2°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
5-3.2° / -13.2°
Feb
5-0.8° / -11°
Mar
56.1° / -4.4°
Apr
3314.6° / 2.3°
May
6321.5° / 9.2°
Jun
6927° / 15.1°
Jul
6729° / 17.3°
Aug
7327.4° / 15.7°
Sep
8123.9° / 10.7°
Oct
5016.9° / 3.8°
Nov
86.7° / -3.8°
Dec
5-0.4° / -9.7°
| Month | Day | Night | Rain | Wet days | Daylight | Comfort | Coverage |
|---|---|---|---|---|---|---|---|
| January | -3.2°C | -13.2°C | 18 mm | 3.4 | 9 h 20 | 5 | Strong coverage |
| February | -0.8°C | -11°C | 25 mm | 3.9 | 10 h 27 | 5 | Strong coverage |
| March | 6.1°C | -4.4°C | 44 mm | 5.1 | 11 h 47 | 5 | Strong coverage |
| April | 14.6°C | 2.3°C | 93 mm | 8.1 | 13 h 20 | 33 | Strong coverage |
| May | 21.5°C | 9.2°C | 115 mm | 10.6 | 14 h 38 | 63 | Strong coverage |
| June | 27°C | 15.1°C | 144 mm | 9.7 | 15 h 21 | 69 | Strong coverage |
| July | 29°C | 17.3°C | 96 mm | 7 | 15 h 04 | 67 | Strong coverage |
| August | 27.4°C | 15.7°C | 112 mm | 7.6 | 13 h 56 | 73 | Strong coverage |
| September | 23.9°C | 10.7°C | 84 mm | 7.3 | 12 h 26 | 81 | Strong coverage |
| October | 16.9°C | 3.8°C | 64 mm | 6 | 10 h 57 | 50 | Strong coverage |
| November | 6.7°C | -3.8°C | 39 mm | 4.4 | 9 h 39 | 8 | Strong coverage |
| December | -0.4°C | -9.7°C | 25 mm | 4.2 | 9 h 01 | 5 | Strong coverage |
What has changed
Ayrshire runs +0.5°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
+1.5
Feb
+0.3
Mar
+1.1
Apr
-0.2
May
-0.6
Jun
+0.1
Jul
0.0
Aug
-0.5
Sep
+1.7
Oct
+0.2
Nov
+0.6
Dec
+2.0
| Month | Record high | Record low | Wettest day | Wettest / driest month | Years |
|---|---|---|---|---|---|
| January | 18.3°C27 Jan 2002 | -36.1°C30 Jan 2019 | 48 mm2 Jan 1971 | 80 mm1971 · driest 0 mm in 1999 | 76 |
| February | 21.7°C27 Feb 2024 | -33.9°C3 Feb 1996 | 42 mm27 Feb 1948 | 93 mm1951 · driest 0 mm in 1974 | 78 |
| March | 30.0°C29 Mar 1895 | -32.2°C1 Mar 1962 | 71 mm23 Mar 1991 | 194 mm1961 · driest 1 mm in 2001 | 77 |
| April | 33.9°C21 Apr 1980 | -15.0°C2 Apr 1975 | 79 mm10 Apr 2013 | 202 mm2013 · driest 0 mm in 2023 | 78 |
| May | 37.8°C15 May 2013 | -5.6°C3 May 1967 | 102 mm22 May 2004 | 300 mm1959 · driest 20 mm in 2006 | 78 |
| June | 38.9°C8 Jun 1985 | 3.3°C2 Jun 1969 | 122 mm17 Jun 2014 | 423 mm2014 · driest 19 mm in 2016 | 81 |
| July | 41.1°C26 Jul 1894 | 4.4°C9 Jul 1895 | 120 mm9 Jul 1950 | 262 mm1950 · driest 2 mm in 1947 | 79 |
| August | 38.9°C8 Aug 1894 | 3.3°C20 Aug 1950 | 229 mm18 Aug 2007 | 390 mm2007 · driest 9 mm in 1950 | 80 |
| September | 37.2°C8 Sep 1947 | -7.8°C28 Sep 1942 | 163 mm21 Sep 1950 | 255 mm2016 · driest 3 mm in 1999 | 77 |
| October | 34.4°C5 Oct 1963 | -12.8°C29 Oct 1895 | 95 mm1 Oct 2007 | 162 mm2007 · driest 0 mm in 1952 | 75 |
| November | 27.2°C9 Nov 2006 | -23.9°C26 Nov 1977 | 55 mm20 Nov 1973 | 126 mm1991 · driest 0 mm in 1893 | 78 |
| December | 20.6°C31 Dec 2004 | -31.1°C24 Dec 1983 | 48 mm28 Dec 1966 | 93 mm1968 · driest 0 mm in 1895 | 77 |
| Month | Days 25°C+ | Days 30°C+ | Frost nights | Heavy rain (10 mm+) | Snow days |
|---|---|---|---|---|---|
| January | 0 | 0 | 29 | <1 | 4 |
| February | 0 | 0 | 26 | <1 | 5 |
| March | <1 | 0 | 24 | 1 | 3 |
| April | 2 | <1 | 9 | 4 | 1 |
| May | 10 | 3 | <1 | 4 | 0 |
| June | 21 | 8 | 0 | 4 | 0 |
| July | 27 | 12 | 0 | 3 | 0 |
| August | 24 | 7 | 0 | 3 | 0 |
| September | 14 | 4 | <1 | 2 | 0 |
| October | 4 | <1 | 7 | 2 | <1 |
| November | <1 | 0 | 21 | 1 | 2 |
| December | 0 | 0 | 29 | <1 | 4 |
| Month | Warm & dry days | Wet days | Washouts | Week with 3+ wet days | Daytime mean has ranged |
|---|---|---|---|---|---|
| January | 0% | 11% | 1% | 4% | -7.9–0.6°C |
| February | 0% | 12% | 2% | 6% | -4.9–3.6°C |
| March | 4% | 18% | 5% | 17% | 1.4–9.7°C |
| April | 23% | 25% | 10% | 28% | 10.8–17.8°C |
| May | 49% | 30% | 12% | 35% | 19.4–24.7°C |
| June | 68% | 29% | 13% | 34% | 24.9–29.5°C |
| July | 76% | 23% | 10% | 23% | 26.9–31.4°C |
| August | 76% | 23% | 10% | 20% | 25.8–30.2°C |
| September | 62% | 22% | 8% | 24% | 21.6–26.2°C |
| October | 32% | 18% | 6% | 16% | 14.2–19.7°C |
| November | 4% | 15% | 4% | 10% | 3.1–10.0°C |
| December | <1% | 13% | 3% | 7% | -4.7–3.0°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 4847522
- NOAA station
- USC00132689 · EMMETSBURG
- Station distance
- 14 km from the place centre
- Climate period
- 1991–2020
- Minimum month coverage
- 27 usable years
- Daylight
- Calculated from latitude 43.04°, 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.