June
June · September · July
82climate match
United States · 1991–2020
Best time to visit
Shelley.
June leads for comfortable weather in Shelley: typically 24.7°C by day, 7.1°C at night, with 28 mm of rain. Based on measured 1991–2020 NOAA station history.
Best comfortJune
Typical high24.7°C
Typical low7.1°C
Rain in June28 mm
July
July · August · June
64climate match
May
May · September · June
84climate match
The weakest month is January, scoring 5 against June’s 82 — days reach only -1.8°C, 26° 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
5-1.8° / -11.2°
Feb
51.2° / -9.2°
Mar
148.4° / -3.4°
Apr
3814.3° / -0.1°
May
6219.8° / 3.8°
Jun
8224.7° / 7.1°
Jul
6930.7° / 9.8°
Aug
6929.9° / 8.8°
Sep
8123.9° / 4.7°
Oct
4215.3° / -0.4°
Nov
56.2° / -5.6°
Dec
5-0.8° / -10.3°
| Month | Day | Night | Rain | Wet days | Daylight | Comfort | Coverage |
|---|---|---|---|---|---|---|---|
| January | -1.8°C | -11.2°C | 16 mm | 4.5 | 9 h 18 | 5 | Strong coverage |
| February | 1.2°C | -9.2°C | 13 mm | 4.2 | 10 h 26 | 5 | Strong coverage |
| March | 8.4°C | -3.4°C | 20 mm | 4.2 | 11 h 47 | 14 | Strong coverage |
| April | 14.3°C | -0.1°C | 28 mm | 5.8 | 13 h 21 | 38 | Strong coverage |
| May | 19.8°C | 3.8°C | 38 mm | 6.5 | 14 h 40 | 62 | Strong coverage |
| June | 24.7°C | 7.1°C | 28 mm | 4.7 | 15 h 23 | 82 | Strong coverage |
| July | 30.7°C | 9.8°C | 10 mm | 2 | 15 h 06 | 69 | Strong coverage |
| August | 29.9°C | 8.8°C | 15 mm | 3.1 | 13 h 58 | 69 | Strong coverage |
| September | 23.9°C | 4.7°C | 23 mm | 3.2 | 12 h 27 | 81 | Strong coverage |
| October | 15.3°C | -0.4°C | 23 mm | 4.6 | 10 h 57 | 42 | Strong coverage |
| November | 6.2°C | -5.6°C | 16 mm | 4.4 | 9 h 38 | 5 | Strong coverage |
| December | -0.8°C | -10.3°C | 18 mm | 5.4 | 8 h 59 | 5 | Strong coverage |
What has changed
Shelley runs +1.4°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
+1.3
Feb
+0.5
Mar
+2.0
Apr
+0.9
May
+0.9
Jun
+1.5
Jul
+1.7
Aug
+1.2
Sep
+2.3
Oct
+0.4
Nov
+1.4
Dec
+2.1
| Month | Record high | Record low | Wettest day | Wettest / driest month | Years |
|---|---|---|---|---|---|
| January | 13.9°C31 Jan 2003 | -36.1°C12 Jan 1963 | 19 mm21 Jan 1969 | 61 mm1969 · driest 1 mm in 1961 | 74 |
| February | 16.7°C6 Feb 2015 | -38.9°C1 Feb 1985 | 26 mm15 Feb 1986 | 60 mm1986 · driest 1 mm in 2002 | 75 |
| March | 25.6°C20 Mar 2026 | -26.7°C2 Mar 1960 | 27 mm14 Mar 2020 | 50 mm2024 · driest 0 mm in 1965 | 74 |
| April | 30.0°C23 Apr 2012 | -10.6°C23 Apr 1968 | 28 mm18 Apr 2000 | 64 mm1975 · driest 0 mm in 1959 | 74 |
| May | 34.4°C28 May 2003 | -8.3°C5 May 1982 | 44 mm6 May 1993 | 110 mm1981 · driest 2 mm in 2007 | 74 |
| June | 38.9°C25 Jun 1988 | -1.7°C2 Jun 1951 | 34 mm10 Jun 2004 | 101 mm2009 · driest 1 mm in 2016 | 73 |
| July | 39.4°C12 Jul 2026 | 0.6°C6 Jul 1986 | 38 mm19 Jul 1973 | 48 mm1987 · driest 0 mm in 2023 | 73 |
| August | 37.8°C2 Aug 2024 | -2.2°C26 Aug 1992 | 30 mm29 Aug 1971 | 66 mm1968 · driest 0 mm in 1964 | 73 |
| September | 37.8°C3 Sep 2022 | -7.8°C24 Sep 2000 | 26 mm21 Sep 2006 | 74 mm2017 · driest 0 mm in 1987 | 73 |
| October | 31.1°C2 Oct 2010 | -19.3°C30 Oct 2019 | 23 mm8 Oct 1973 | 71 mm2016 · driest 0 mm in 1988 | 73 |
| November | 21.7°C6 Nov 2020 | -28.3°C30 Nov 1975 | 23 mm14 Nov 1971 | 63 mm1988 · driest 0 mm in 1976 | 73 |
| December | 14.4°C12 Dec 2014 | -35.0°C5 Dec 1972 | 18 mm23 Dec 1982 | 53 mm2025 · driest 1 mm in 1976 | 73 |
| Month | Days 25°C+ | Days 30°C+ | Frost nights | Heavy rain (10 mm+) | Snow days |
|---|---|---|---|---|---|
| January | 0 | 0 | 30 | <1 | 5 |
| February | 0 | 0 | 27 | 0 | 7 |
| March | 0 | 0 | 25 | <1 | 2 |
| April | 1 | 0 | 17 | <1 | 3 |
| May | 7 | <1 | 6 | 1 | <1 |
| June | 16 | 6 | <1 | <1 | 0 |
| July | 29 | 20 | 0 | <1 | 0 |
| August | 28 | 18 | <1 | <1 | 0 |
| September | 15 | 4 | 3 | <1 | 0 |
| October | 2 | <1 | 17 | <1 | <1 |
| November | 0 | 0 | 27 | <1 | 5 |
| December | 0 | 0 | 30 | <1 | 7 |
| Month | Warm & dry days | Wet days | Washouts | Week with 3+ wet days | Daytime mean has ranged |
|---|---|---|---|---|---|
| January | 0% | 17% | <1% | 14% | -6.0–1.6°C |
| February | 0% | 16% | <1% | 14% | -2.9–4.8°C |
| March | 2% | 15% | 1% | 10% | 3.1–11.0°C |
| April | 16% | 17% | 2% | 14% | 11.3–16.9°C |
| May | 46% | 20% | 3% | 22% | 16.5–22.1°C |
| June | 73% | 16% | 2% | 13% | 22.1–28.0°C |
| July | 93% | 7% | <1% | 3% | 28.5–32.6°C |
| August | 88% | 11% | 1% | 7% | 27.2–31.3°C |
| September | 71% | 11% | 2% | 9% | 20.5–26.0°C |
| October | 27% | 13% | 2% | 10% | 12.7–18.5°C |
| November | <1% | 16% | 1% | 15% | 3.3–8.9°C |
| December | 0% | 19% | <1% | 18% | -4.8–2.4°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 5607051
- NOAA station
- USW00024145 · IDAHO FALLS FAA AP
- Station distance
- 16.1 km from the place centre
- Climate period
- 1991–2020
- Minimum month coverage
- 25 usable years
- Daylight
- Calculated from latitude 43.38°, 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.