May
May · June · September
80climate match
United States · 1991–2020
Best time to visit
Glenns Ferry.
May leads for comfortable weather in Glenns Ferry: typically 25.1°C by day, 6.4°C at night, with 21 mm of rain. Based on measured 1991–2020 NOAA station history.
Best comfortMay
Typical high25.1°C
Typical low6.4°C
Rain in May21 mm
June
June · September · July
67climate match
April
April · October · May
83climate match
The weakest month is January, scoring 5 against May’s 80 — days reach only 6.1°C, 18° below the 24°C the score treats as ideal, and nights drop to -4.7°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
56.1° / -4.7°
Feb
189.8° / -3.8°
Mar
4115.2° / -1°
Apr
6019.5° / 1.9°
May
8025.1° / 6.4°
Jun
7130.2° / 10.4°
Jul
5736.4° / 13.7°
Aug
5735.6° / 12.1°
Sep
6729.5° / 6.7°
Oct
6621.3° / 1.4°
Nov
2812.1° / -3.2°
Dec
56° / -5.1°
| Month | Day | Night | Rain | Wet days | Daylight | Comfort | Coverage |
|---|---|---|---|---|---|---|---|
| January | 6.1°C | -4.7°C | 39 mm | 6.7 | 9 h 20 | 5 | Strong coverage |
| February | 9.8°C | -3.8°C | 16 mm | 3.9 | 10 h 27 | 18 | Strong coverage |
| March | 15.2°C | -1°C | 25 mm | 4.8 | 11 h 47 | 41 | Strong coverage |
| April | 19.5°C | 1.9°C | 18 mm | 4.6 | 13 h 20 | 60 | Strong coverage |
| May | 25.1°C | 6.4°C | 21 mm | 4.3 | 14 h 37 | 80 | Strong coverage |
| June | 30.2°C | 10.4°C | 14 mm | 2.8 | 15 h 20 | 71 | Strong coverage |
| July | 36.4°C | 13.7°C | 4 mm | 1 | 15 h 03 | 57 | Strong coverage |
| August | 35.6°C | 12.1°C | 4 mm | 1 | 13 h 56 | 57 | Strong coverage |
| September | 29.5°C | 6.7°C | 7 mm | 1.4 | 12 h 26 | 67 | Strong coverage |
| October | 21.3°C | 1.4°C | 19 mm | 3 | 10 h 58 | 66 | Strong coverage |
| November | 12.1°C | -3.2°C | 17 mm | 3.2 | 9 h 40 | 28 | Good coverage |
| December | 6°C | -5.1°C | 35 mm | 5.7 | 9 h 02 | 5 | Strong coverage |
What has changed
Glenns Ferry runs +1.3°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
+1.9
Feb
+0.6
Mar
+1.1
Apr
+0.4
May
+0.7
Jun
+1.4
Jul
+1.5
Aug
+1.4
Sep
+2.5
Oct
+0.6
Nov
+1.4
Dec
+1.9
| Month | Record high | Record low | Wettest day | Wettest / driest month | Years |
|---|---|---|---|---|---|
| January | 29.4°C7 Jan 1905 | -30.6°C18 Jan 1922 | 38 mm2 Jan 1997 | 130 mm1970 · driest 1 mm in 1920 | 111 |
| February | 22.8°C29 Feb 1992 | -26.7°C7 Feb 1933 | 22 mm13 Feb 1986 | 90 mm1986 · driest 0 mm in 1964 | 114 |
| March | 32.2°C31 Mar 1919 | -15.6°C3 Mar 1989 | 29 mm8 Mar 1943 | 81 mm1938 · driest 0 mm in 1990 | 113 |
| April | 36.1°C25 Apr 1910 | -10.0°C1 Apr 1936 | 52 mm13 Apr 1930 | 70 mm1963 · driest 0 mm in 1909 | 114 |
| May | 42.2°C29 May 2003 | -7.2°C6 May 1909 | 88 mm16 May 1925 | 91 mm1925 · driest 0 mm in 1992 | 112 |
| June | 45.6°C29 Jun 2015 | -3.3°C6 Jun 1914 | 51 mm5 Jun 1923 | 82 mm1923 · driest 0 mm in 1917 | 113 |
| July | 46.1°C24 Jul 2003 | 0.6°C14 Jul 1913 | 23 mm13 Jul 1932 | 35 mm1913 · driest 0 mm in 2000 | 113 |
| August | 44.4°C7 Aug 1905 | -0.6°C28 Aug 1927 | 28 mm17 Aug 1968 | 67 mm1968 · driest 0 mm in 1966 | 112 |
| September | 42.8°C1 Sep 2022 | -9.4°C25 Sep 1926 | 46 mm26 Sep 1923 | 54 mm1959 · driest 0 mm in 1992 | 113 |
| October | 35.6°C2 Oct 2010 | -13.3°C31 Oct 2002 | 33 mm25 Oct 2021 | 59 mm2009 · driest 0 mm in 1987 | 109 |
| November | 28.9°C3 Nov 1905 | -22.8°C26 Nov 1985 | 36 mm25 Nov 1958 | 110 mm1909 · driest 0 mm in 2009 | 107 |
| December | 23.9°C11 Dec 1933 | -33.3°C25 Dec 1924 | 34 mm11 Dec 1955 | 126 mm1964 · driest 0 mm in 1989 | 110 |
| Month | Days 25°C+ | Days 30°C+ | Frost nights | Heavy rain (10 mm+) | Snow days |
|---|---|---|---|---|---|
| January | 0 | 0 | 18 | <1 | 1 |
| February | 0 | 0 | 17 | <1 | <1 |
| March | <1 | 0 | 15 | <1 | <1 |
| April | 4 | <1 | 9 | <1 | 0 |
| May | 14 | 7 | 2 | <1 | 0 |
| June | 23 | 16 | <1 | <1 | 0 |
| July | 29 | 27 | 0 | <1 | 0 |
| August | 28 | 26 | 0 | <1 | 0 |
| September | 22 | 14 | 1 | <1 | 0 |
| October | 7 | 2 | 11 | <1 | 0 |
| November | <1 | 0 | 17 | <1 | <1 |
| December | 0 | 0 | 19 | <1 | 1 |
| Month | Warm & dry days | Wet days | Washouts | Week with 3+ wet days | Daytime mean has ranged |
|---|---|---|---|---|---|
| January | <1% | 19% | 3% | 19% | 1.2–8.0°C |
| February | <1% | 19% | 2% | 18% | 4.0–12.3°C |
| March | 14% | 15% | 1% | 12% | 11.2–17.2°C |
| April | 45% | 14% | 1% | 10% | 16.4–23.0°C |
| May | 73% | 13% | 1% | 10% | 21.9–28.2°C |
| June | 88% | 11% | 1% | 7% | 27.0–33.4°C |
| July | 96% | 4% | <1% | <1% | 33.3–38.3°C |
| August | 96% | 4% | <1% | 1% | 32.1–37.2°C |
| September | 89% | 6% | <1% | 3% | 25.3–31.4°C |
| October | 57% | 10% | 1% | 6% | 18.0–23.8°C |
| November | 6% | 18% | 3% | 20% | 8.4–15.1°C |
| December | <1% | 19% | 3% | 19% | 2.1–8.6°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 5594092
- NOAA station
- USC00103631 · GLENNS FERRY
- Station distance
- 2.4 km from the place centre
- Climate period
- 1991–2020
- Minimum month coverage
- 24 usable years
- Daylight
- Calculated from latitude 42.95°, 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.