May
May · September · June
87climate match
United States · 1991–2020
Best time to visit
Clifton.
May leads for comfortable weather in Clifton: typically 24.6°C by day, 9.6°C at night, with 25 mm of rain. Based on measured 1991–2020 NOAA station history.
Best comfortMay
Typical high24.6°C
Typical low9.6°C
Rain in May25 mm
August
August · June · July
77climate match
October
October · April · May
89climate match
The weakest month is January, scoring 5 against May’s 87 — days reach only 4.3°C, 20° below the 24°C the score treats as ideal, and nights drop to -7.2°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
54.3° / -7.2°
Feb
148.4° / -3.9°
Mar
4314.7° / 0.8°
Apr
6218.9° / 4.5°
May
8724.6° / 9.6°
Jun
7631.3° / 15°
Jul
6034.3° / 18.4°
Aug
6732.4° / 17.1°
Sep
8127.6° / 12.3°
Oct
6719.8° / 5.1°
Nov
2911.6° / -1.3°
Dec
54.5° / -6.7°
| Month | Day | Night | Rain | Wet days | Daylight | Comfort | Coverage |
|---|---|---|---|---|---|---|---|
| January | 4.3°C | -7.2°C | 13 mm | 3.4 | 9 h 42 | 5 | Strong coverage |
| February | 8.4°C | -3.9°C | 13 mm | 3.5 | 10 h 40 | 14 | Strong coverage |
| March | 14.7°C | 0.8°C | 21 mm | 4.2 | 11 h 50 | 43 | Strong coverage |
| April | 18.9°C | 4.5°C | 25 mm | 4.7 | 13 h 10 | 62 | Strong coverage |
| May | 24.6°C | 9.6°C | 25 mm | 4.6 | 14 h 17 | 87 | Strong coverage |
| June | 31.3°C | 15°C | 10 mm | 2.2 | 14 h 54 | 76 | Strong coverage |
| July | 34.3°C | 18.4°C | 20 mm | 3.5 | 14 h 39 | 60 | Strong coverage |
| August | 32.4°C | 17.1°C | 24 mm | 4.6 | 13 h 42 | 67 | Strong coverage |
| September | 27.6°C | 12.3°C | 32 mm | 5.4 | 12 h 24 | 81 | Strong coverage |
| October | 19.8°C | 5.1°C | 25 mm | 4.4 | 11 h 06 | 67 | Strong coverage |
| November | 11.6°C | -1.3°C | 18 mm | 3.6 | 9 h 59 | 29 | Strong coverage |
| December | 4.5°C | -6.7°C | 12 mm | 3.1 | 9 h 26 | 5 | Strong coverage |
What has changed
Clifton runs +0.9°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
+0.8
Mar
+1.6
Apr
+0.6
May
+0.3
Jun
+2.1
Jul
+0.9
Aug
+0.8
Sep
+1.4
Oct
-0.1
Nov
+0.8
Dec
+0.4
| Month | Record high | Record low | Wettest day | Wettest / driest month | Years |
|---|---|---|---|---|---|
| January | 16.1°C31 Jan 1965 | -24.4°C6 Jan 1971 | 15 mm12 Jan 2005 | 36 mm1973 · driest 0 mm in 2011 | 63 |
| February | 20.6°C26 Feb 2025 | -29.4°C6 Feb 1989 | 18 mm13 Feb 2018 | 34 mm1968 · driest 0 mm in 1972 | 63 |
| March | 31.1°C26 Mar 2026 | -13.3°C2 Mar 2002 | 30 mm28 Mar 1993 | 61 mm1970 · driest 0 mm in 2004 | 63 |
| April | 32.2°C25 Apr 2012 | -11.7°C2 Apr 1975 | 22 mm5 Apr 2004 | 84 mm2004 · driest 0 mm in 2018 | 64 |
| May | 37.8°C30 May 2000 | -2.8°C1 May 2011 | 24 mm6 May 1973 | 76 mm1992 · driest 0 mm in 1970 | 64 |
| June | 41.1°C29 Jun 2013 | 0.6°C14 Jun 1976 | 32 mm24 Jun 1969 | 59 mm2024 · driest 0 mm in 2001 | 65 |
| July | 41.7°C15 Jul 2003 | 5.6°C18 Jul 1978 | 31 mm24 Jul 1997 | 53 mm1997 · driest 0 mm in 1978 | 65 |
| August | 39.4°C22 Aug 2025 | 4.4°C28 Aug 1963 | 25 mm12 Aug 1963 | 82 mm1963 · driest 0 mm in 1985 | 63 |
| September | 38.3°C7 Sep 2022 | -2.8°C18 Sep 1971 | 34 mm18 Sep 1965 | 86 mm1997 · driest 0 mm in 2018 | 64 |
| October | 32.2°C2 Oct 2015 | -12.8°C27 Oct 2020 | 28 mm18 Oct 1965 | 83 mm1972 · driest 0 mm in 1964 | 64 |
| November | 25.6°C2 Nov 2014 | -18.9°C28 Nov 1976 | 23 mm28 Nov 2008 | 70 mm1983 · driest 0 mm in 1989 | 63 |
| December | 19.4°C2 Dec 1999 | -25.0°C8 Dec 1978 | 21 mm8 Dec 2009 | 58 mm1983 · driest 0 mm in 2024 | 63 |
| Month | Days 25°C+ | Days 30°C+ | Frost nights | Heavy rain (10 mm+) | Snow days |
|---|---|---|---|---|---|
| January | 0 | 0 | 29 | <1 | 3 |
| February | 0 | 0 | 24 | <1 | 2 |
| March | <1 | 0 | 14 | <1 | 1 |
| April | 4 | <1 | 5 | <1 | <1 |
| May | 17 | 5 | <1 | <1 | 0 |
| June | 27 | 21 | 0 | <1 | 0 |
| July | 30 | 28 | 0 | <1 | 0 |
| August | 30 | 25 | 0 | <1 | 0 |
| September | 23 | 11 | <1 | <1 | 0 |
| October | 6 | <1 | 4 | <1 | <1 |
| November | 0 | 0 | 19 | <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 | 0% | 10% | <1% | 3% | -0.5–6.7°C |
| February | <1% | 11% | <1% | 7% | 4.8–11.4°C |
| March | 15% | 14% | 2% | 12% | 11.2–16.9°C |
| April | 46% | 14% | 2% | 11% | 15.6–21.6°C |
| May | 73% | 14% | 2% | 10% | 21.8–26.7°C |
| June | 91% | 8% | 1% | 5% | 28.0–33.6°C |
| July | 89% | 11% | 2% | 6% | 32.3–35.7°C |
| August | 86% | 14% | 2% | 9% | 30.5–33.9°C |
| September | 81% | 16% | 2% | 11% | 25.6–29.4°C |
| October | 52% | 14% | 2% | 10% | 17.3–22.2°C |
| November | 4% | 11% | 2% | 6% | 8.9–14.1°C |
| December | 0% | 10% | <1% | 5% | 2.0–7.0°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 5417258
- NOAA station
- USC00053489 · GRAND JUNCTION 6ESE
- Station distance
- 5.7 km from the place centre
- Climate period
- 1991–2020
- Minimum month coverage
- 28 usable years
- Daylight
- Calculated from latitude 39.09°, 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.