May
May · September · June
75climate match
United States · 1991–2020
Best time to visit
Aurora.
May leads for comfortable weather in Aurora: typically 22.8°C by day, 4°C at night, with 25 mm of rain. Based on measured 1991–2020 NOAA station history.
Best comfortMay
Typical high22.8°C
Typical low4°C
Rain in May25 mm
July
July · August · June
64climate match
October
October · May · April
81climate match
The weakest month is January, scoring 5 against May’s 75 — days reach only 5.2°C, 19° below the 24°C the score treats as ideal, and nights drop to -8.3°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
55.2° / -8.3°
Feb
118.5° / -5.7°
Mar
3514.2° / -2.6°
Apr
5117.8° / -0.1°
May
7522.8° / 4°
Jun
7129.2° / 8.2°
Jul
6632.5° / 12°
Aug
6831.4° / 11.2°
Sep
7327.1° / 6.1°
Oct
5819.8° / 0°
Nov
2411.9° / -4.8°
Dec
55° / -8.6°
| Month | Day | Night | Rain | Wet days | Daylight | Comfort | Coverage |
|---|---|---|---|---|---|---|---|
| January | 5.2°C | -8.3°C | 13 mm | 3 | 9 h 43 | 5 | Strong coverage |
| February | 8.5°C | -5.7°C | 12 mm | 3.4 | 10 h 40 | 11 | Strong coverage |
| March | 14.2°C | -2.6°C | 18 mm | 3.5 | 11 h 50 | 35 | Strong coverage |
| April | 17.8°C | -0.1°C | 16 mm | 4.2 | 13 h 10 | 51 | Strong coverage |
| May | 22.8°C | 4°C | 25 mm | 4.5 | 14 h 17 | 75 | Strong coverage |
| June | 29.2°C | 8.2°C | 10 mm | 2.2 | 14 h 53 | 71 | Strong coverage |
| July | 32.5°C | 12°C | 17 mm | 3.3 | 14 h 39 | 66 | Strong coverage |
| August | 31.4°C | 11.2°C | 17 mm | 3.9 | 13 h 41 | 68 | Strong coverage |
| September | 27.1°C | 6.1°C | 20 mm | 3.4 | 12 h 24 | 73 | Strong coverage |
| October | 19.8°C | 0°C | 23 mm | 4 | 11 h 07 | 58 | Strong coverage |
| November | 11.9°C | -4.8°C | 12 mm | 2.9 | 10 h | 24 | Strong coverage |
| December | 5°C | -8.6°C | 15 mm | 3.1 | 9 h 27 | 5 | Strong coverage |
What has changed
Aurora runs +0.8°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
+0.3
Feb
+0.2
Mar
+1.1
Apr
+0.2
May
-0.1
Jun
+2.2
Jul
+1.2
Aug
+1.0
Sep
+1.5
Oct
-0.2
Nov
+1.2
Dec
+0.4
| Month | Record high | Record low | Wettest day | Wettest / driest month | Years |
|---|---|---|---|---|---|
| January | 21.7°C31 Jan 2018 | -33.3°C9 Jan 1937 | 24 mm3 Jan 1938 | 46 mm1974 · driest 0 mm in 1894 | 124 |
| February | 26.7°C25 Feb 2025 | -36.1°C7 Feb 1989 | 31 mm23 Feb 1912 | 57 mm1962 · driest 0 mm in 1970 | 125 |
| March | 31.7°C26 Mar 2026 | -24.4°C1 Mar 1962 | 56 mm24 Mar 1899 | 128 mm1899 · driest 0 mm in 1898 | 126 |
| April | 32.2°C26 Apr 1910 | -15.0°C2 Apr 1908 | 30 mm4 Apr 1935 | 76 mm1912 · driest 0 mm in 1916 | 124 |
| May | 39.4°C31 May 1910 | -10.0°C13 May 2000 | 34 mm6 May 2025 | 82 mm2015 · driest 0 mm in 2020 | 127 |
| June | 40.0°C30 Jun 2024 | -6.7°C3 Jun 1897 | 36 mm7 Jun 1908 | 69 mm1984 · driest 0 mm in 2013 | 124 |
| July | 41.7°C5 Jul 2023 | -1.1°C19 Jul 1897 | 41 mm27 Jul 1929 | 84 mm1936 · driest 0 mm in 1900 | 123 |
| August | 39.4°C14 Aug 1940 | -5.6°C31 Aug 1908 | 46 mm1 Aug 1953 | 66 mm1909 · driest 0 mm in 2020 | 124 |
| September | 39.4°C2 Sep 2024 | -11.1°C29 Sep 1898 | 30 mm23 Sep 1967 | 74 mm1980 · driest 0 mm in 1946 | 125 |
| October | 35.6°C3 Oct 2024 | -17.8°C30 Oct 1971 | 51 mm4 Oct 1907 | 114 mm1907 · driest 0 mm in 1973 | 123 |
| November | 26.7°C6 Nov 1934 | -26.1°C30 Nov 2006 | 30 mm2 Nov 1978 | 53 mm1985 · driest 0 mm in 1912 | 122 |
| December | 22.8°C13 Dec 1921 | -35.6°C23 Dec 1990 | 61 mm12 Dec 1906 | 104 mm1906 · driest 0 mm in 1980 | 124 |
| Month | Days 25°C+ | Days 30°C+ | Frost nights | Heavy rain (10 mm+) | Snow days |
|---|---|---|---|---|---|
| January | 0 | 0 | 29 | <1 | 3 |
| February | 0 | 0 | 26 | <1 | 2 |
| March | <1 | 0 | 24 | <1 | 1 |
| April | 2 | 0 | 17 | <1 | <1 |
| May | 12 | 2 | 5 | <1 | <1 |
| June | 25 | 15 | <1 | <1 | 0 |
| July | 30 | 26 | 0 | <1 | 0 |
| August | 30 | 23 | 0 | <1 | 0 |
| September | 22 | 8 | 2 | <1 | 0 |
| October | 6 | <1 | 17 | <1 | <1 |
| November | <1 | 0 | 25 | <1 | 1 |
| December | 0 | 0 | 29 | <1 | 3 |
| Month | Warm & dry days | Wet days | Washouts | Week with 3+ wet days | Daytime mean has ranged |
|---|---|---|---|---|---|
| January | <1% | 12% | <1% | 5% | 1.3–8.7°C |
| February | 1% | 14% | 1% | 8% | 4.8–11.8°C |
| March | 13% | 14% | 2% | 8% | 10.4–16.3°C |
| April | 41% | 13% | 1% | 7% | 15.4–21.1°C |
| May | 70% | 13% | 2% | 9% | 20.4–25.7°C |
| June | 90% | 8% | 1% | 4% | 26.5–31.6°C |
| July | 88% | 12% | 1% | 8% | 30.6–34.5°C |
| August | 86% | 14% | 2% | 8% | 29.7–32.8°C |
| September | 85% | 12% | 2% | 8% | 25.1–29.3°C |
| October | 58% | 12% | 2% | 7% | 17.5–23.0°C |
| November | 10% | 10% | 1% | 6% | 8.6–15.8°C |
| December | <1% | 11% | 1% | 6% | 2.8–9.9°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 5534620
- NOAA station
- USC00427260 · RICHFIELD RADIO KSVC
- Station distance
- 21.8 km from the place centre
- Climate period
- 1991–2020
- Minimum month coverage
- 28 usable years
- Daylight
- Calculated from latitude 38.92°, 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.