May
May · September · June
86climate match
United States · 1991–2020
Best time to visit
Redlands.
May leads for comfortable weather in Redlands: typically 23.7°C by day, 8.8°C at night, with 28 mm of rain. Based on measured 1991–2020 NOAA station history.
Best comfortMay
Typical high23.7°C
Typical low8.8°C
Rain in May28 mm
June
June · July · August
77climate match
October
October · May · April
86climate match
The weakest month is January, scoring 5 against May’s 86 — days reach only 4°C, 20° 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
54° / -6.2°
Feb
107.3° / -3.7°
Mar
3913.6° / 0.8°
Apr
5817.8° / 3.8°
May
8623.7° / 8.8°
Jun
7730.8° / 14.8°
Jul
6134.1° / 17.8°
Aug
6832.3° / 16.3°
Sep
8227.1° / 11.7°
Oct
6419.1° / 4.9°
Nov
2610.6° / -1°
Dec
54.2° / -5.9°
| Month | Day | Night | Rain | Wet days | Daylight | Comfort | Coverage |
|---|---|---|---|---|---|---|---|
| January | 4°C | -6.2°C | 19 mm | 4.1 | 9 h 42 | 5 | Strong coverage |
| February | 7.3°C | -3.7°C | 17 mm | 4.4 | 10 h 40 | 10 | Strong coverage |
| March | 13.6°C | 0.8°C | 23 mm | 4.5 | 11 h 50 | 39 | Strong coverage |
| April | 17.8°C | 3.8°C | 28 mm | 4.8 | 13 h 10 | 58 | Strong coverage |
| May | 23.7°C | 8.8°C | 28 mm | 4.7 | 14 h 17 | 86 | Strong coverage |
| June | 30.8°C | 14.8°C | 16 mm | 2.8 | 14 h 54 | 77 | Strong coverage |
| July | 34.1°C | 17.8°C | 20 mm | 3.8 | 14 h 39 | 61 | Strong coverage |
| August | 32.3°C | 16.3°C | 28 mm | 5 | 13 h 42 | 68 | Strong coverage |
| September | 27.1°C | 11.7°C | 30 mm | 5.1 | 12 h 24 | 82 | Strong coverage |
| October | 19.1°C | 4.9°C | 31 mm | 4.9 | 11 h 06 | 64 | Strong coverage |
| November | 10.6°C | -1°C | 22 mm | 4.1 | 9 h 59 | 26 | Strong coverage |
| December | 4.2°C | -5.9°C | 19 mm | 4 | 9 h 26 | 5 | Strong coverage |
What has changed
Redlands runs +1.2°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
+1.2
Feb
+0.6
Mar
+1.9
Apr
+0.4
May
-0.2
Jun
+1.9
Jul
+1.3
Aug
+1.3
Sep
+1.7
Oct
+0.9
Nov
+1.8
Dec
+1.5
| Month | Record high | Record low | Wettest day | Wettest / driest month | Years |
|---|---|---|---|---|---|
| January | 15.6°C13 Jan 1945 | -27.8°C13 Jan 1963 | 24 mm12 Jan 2005 | 66 mm1957 · driest 0 mm in 2025 | 85 |
| February | 18.9°C26 Feb 1986 | -24.4°C6 Feb 1989 | 22 mm4 Feb 1989 | 56 mm1948 · driest 0 mm in 1972 | 84 |
| March | 30.6°C26 Mar 2026 | -16.1°C21 Mar 1955 | 30 mm28 Mar 1942 | 71 mm2019 · driest 0 mm in 1997 | 86 |
| April | 31.1°C24 Apr 2012 | -11.7°C11 Apr 1997 | 36 mm27 Apr 1965 | 105 mm2004 · driest 0 mm in 1958 | 83 |
| May | 36.7°C31 May 2002 | -6.1°C11 May 1965 | 48 mm17 May 1993 | 104 mm1993 · driest 0 mm in 1940 | 84 |
| June | 40.0°C26 Jun 1994 | -1.1°C10 Jun 1984 | 41 mm24 Jun 1969 | 71 mm1995 · driest 0 mm in 2013 | 86 |
| July | 41.7°C10 Jul 2021 | 5.0°C21 Jul 1990 | 41 mm11 Jul 2001 | 60 mm1985 · driest 0 mm in 1994 | 86 |
| August | 39.4°C22 Aug 2025 | 3.3°C20 Aug 2021 | 65 mm6 Aug 1957 | 169 mm1957 · driest 0 mm in 1985 | 86 |
| September | 37.8°C12 Sep 1960 | -2.8°C27 Sep 1996 | 57 mm22 Sep 1941 | 93 mm2013 · driest 0 mm in 2018 | 85 |
| October | 32.2°C1 Oct 2024 | -16.7°C30 Oct 2019 | 35 mm4 Oct 1984 | 91 mm1941 · driest 0 mm in 1952 | 84 |
| November | 22.2°C1 Nov 1964 | -20.6°C30 Nov 2006 | 27 mm24 Nov 1946 | 55 mm1996 · driest 0 mm in 2005 | 86 |
| December | 16.7°C26 Dec 2025 | -23.9°C23 Dec 1990 | 41 mm6 Dec 1966 | 89 mm1966 · driest 0 mm in 1976 | 86 |
| Month | Days 25°C+ | Days 30°C+ | Frost nights | Heavy rain (10 mm+) | Snow days |
|---|---|---|---|---|---|
| January | 0 | 0 | 28 | <1 | 4 |
| February | 0 | 0 | 22 | <1 | 3 |
| March | <1 | 0 | 14 | <1 | 2 |
| April | 3 | <1 | 6 | <1 | <1 |
| May | 14 | 3 | 1 | <1 | <1 |
| June | 26 | 19 | 0 | <1 | 0 |
| July | 30 | 27 | 0 | <1 | 0 |
| August | 29 | 24 | 0 | <1 | 0 |
| September | 22 | 10 | <1 | <1 | 0 |
| October | 5 | <1 | 4 | 1 | <1 |
| November | 0 | 0 | 17 | <1 | 2 |
| December | 0 | 0 | 26 | <1 | 4 |
| Month | Warm & dry days | Wet days | Washouts | Week with 3+ wet days | Daytime mean has ranged |
|---|---|---|---|---|---|
| January | 0% | 14% | 1% | 11% | 0.4–6.2°C |
| February | 0% | 14% | <1% | 12% | 3.7–9.6°C |
| March | 8% | 17% | 2% | 12% | 8.8–15.4°C |
| April | 37% | 15% | 2% | 11% | 14.4–20.6°C |
| May | 72% | 14% | 2% | 12% | 20.4–26.3°C |
| June | 89% | 10% | 2% | 6% | 27.5–33.0°C |
| July | 87% | 13% | 2% | 13% | 31.8–35.6°C |
| August | 83% | 17% | 3% | 14% | 29.8–33.6°C |
| September | 81% | 15% | 2% | 12% | 24.4–28.8°C |
| October | 48% | 15% | 3% | 12% | 16.0–21.3°C |
| November | 1% | 14% | 2% | 8% | 6.7–13.1°C |
| December | 0% | 13% | 2% | 8% | 1.5–6.6°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 5436099
- NOAA station
- USC00051772 · COLORADO NM
- Station distance
- 8.8 km from the place centre
- Climate period
- 1991–2020
- Minimum month coverage
- 27 usable years
- Daylight
- Calculated from latitude 39.08°, 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.