July
July · August · June
76climate match
United States · 1991–2020
Best time to visit
Granby.
July leads for comfortable weather in Granby: typically 24.7°C by day, 5.9°C at night, with 41 mm of rain. Based on measured 1991–2020 NOAA station history.
Best comfortJuly
Typical high24.7°C
Typical low5.9°C
Rain in July41 mm
July
July · August · June
38climate match
September
September · June · August
80climate match
The weakest month is January, scoring 5 against July’s 76 — days reach only -2.5°C, 26° below the 24°C the score treats as ideal, and nights drop to -17.3°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
5-2.5° / -17.3°
Feb
50° / -16.2°
Mar
55.2° / -11.2°
Apr
139.9° / -5.8°
May
4016.1° / -1.3°
Jun
6922.1° / 2.5°
Jul
7624.7° / 5.9°
Aug
7523.6° / 5.2°
Sep
6020.2° / 1.3°
Oct
3013.4° / -3.6°
Nov
55° / -8.7°
Dec
5-1.4° / -14.3°
| Month | Day | Night | Rain | Wet days | Daylight | Comfort | Coverage |
|---|---|---|---|---|---|---|---|
| January | -2.5°C | -17.3°C | 22 mm | 6.6 | 9 h 37 | 5 | Strong coverage |
| February | 0°C | -16.2°C | 21 mm | 6 | 10 h 37 | 5 | Strong coverage |
| March | 5.2°C | -11.2°C | 18 mm | 5.1 | 11 h 49 | 5 | Strong coverage |
| April | 9.9°C | -5.8°C | 30 mm | 6.9 | 13 h 12 | 13 | Strong coverage |
| May | 16.1°C | -1.3°C | 41 mm | 7.6 | 14 h 22 | 40 | Strong coverage |
| June | 22.1°C | 2.5°C | 30 mm | 5.7 | 15 h 00 | 69 | Strong coverage |
| July | 24.7°C | 5.9°C | 41 mm | 8.2 | 14 h 45 | 76 | Strong coverage |
| August | 23.6°C | 5.2°C | 43 mm | 8.2 | 13 h 45 | 75 | Strong coverage |
| September | 20.2°C | 1.3°C | 37 mm | 6.2 | 12 h 24 | 60 | Strong coverage |
| October | 13.4°C | -3.6°C | 26 mm | 4.9 | 11 h 04 | 30 | Strong coverage |
| November | 5°C | -8.7°C | 18 mm | 5.5 | 9 h 54 | 5 | Strong coverage |
| December | -1.4°C | -14.3°C | 22 mm | 6 | 9 h 20 | 5 | Strong coverage |
What has changed
Granby 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
+0.3
Feb
+0.4
Mar
+1.7
Apr
+1.0
May
+0.6
Jun
+2.1
Jul
+1.0
Aug
+0.9
Sep
+2.3
Oct
+0.9
Nov
+1.8
Dec
+1.1
| Month | Record high | Record low | Wettest day | Wettest / driest month | Years |
|---|---|---|---|---|---|
| January | 9.4°C21 Jan 1950 | -43.3°C10 Jan 1962 | 20 mm29 Jan 1951 | 62 mm1980 · driest 1 mm in 2015 | 78 |
| February | 11.7°C1 Feb 1954 | -41.1°C1 Feb 1985 | 18 mm20 Feb 1986 | 56 mm1986 · driest 5 mm in 1984 | 77 |
| March | 20.6°C26 Mar 2026 | -34.4°C3 Mar 1965 | 18 mm3 Mar 1964 | 64 mm1983 · driest 4 mm in 2017 | 78 |
| April | 22.8°C30 Apr 1992 | -27.2°C2 Apr 1975 | 34 mm23 Apr 2000 | 70 mm1957 · driest 3 mm in 2023 | 78 |
| May | 30.0°C30 May 2002 | -18.3°C2 May 2013 | 36 mm7 May 1969 | 99 mm1995 · driest 7 mm in 1970 | 76 |
| June | 31.1°C23 Jun 1954 | -6.1°C1 Jun 1990 | 35 mm8 Jun 2023 | 110 mm1969 · driest 0 mm in 1986 | 78 |
| July | 31.7°C1 Jul 2002 | -2.8°C3 Jul 1982 | 39 mm31 Jul 1997 | 98 mm1998 · driest 9 mm in 1963 | 76 |
| August | 31.1°C10 Aug 2003 | -3.9°C27 Aug 1992 | 32 mm19 Aug 2004 | 77 mm1983 · driest 6 mm in 2020 | 78 |
| September | 28.3°C5 Sep 2002 | -10.0°C30 Sep 1959 | 39 mm12 Sep 2008 | 135 mm1961 · driest 2 mm in 1953 | 77 |
| October | 23.3°C1 Oct 1992 | -22.2°C31 Oct 2019 | 37 mm3 Oct 1969 | 93 mm1969 · driest 0 mm in 1952 | 78 |
| November | 18.3°C10 Nov 1971 | -30.0°C28 Nov 1976 | 28 mm9 Nov 1985 | 70 mm1985 · driest 0 mm in 1965 | 78 |
| December | 14.4°C24 Dec 1971 | -37.2°C23 Dec 1990 | 34 mm30 Dec 1951 | 106 mm1951 · driest 0 mm in 2011 | 78 |
| Month | Days 25°C+ | Days 30°C+ | Frost nights | Heavy rain (10 mm+) | Snow days |
|---|---|---|---|---|---|
| January | 0 | 0 | 31 | <1 | 0 |
| February | 0 | 0 | 28 | <1 | 3 |
| March | 0 | 0 | 31 | 0 | 0 |
| April | 0 | 0 | 29 | <1 | 0 |
| May | <1 | 0 | 21 | <1 | 0 |
| June | 7 | <1 | 5 | <1 | 0 |
| July | 16 | <1 | <1 | <1 | 0 |
| August | 12 | <1 | <1 | <1 | 0 |
| September | 2 | 0 | 12 | 1 | 0 |
| October | 0 | 0 | 26 | <1 | 0 |
| November | 0 | 0 | 29 | <1 | 0 |
| December | 0 | 0 | 31 | <1 | 0 |
| Month | Warm & dry days | Wet days | Washouts | Week with 3+ wet days | Daytime mean has ranged |
|---|---|---|---|---|---|
| January | 0% | 23% | <1% | 22% | -5.3–-0.1°C |
| February | 0% | 22% | <1% | 22% | -2.8–2.1°C |
| March | <1% | 22% | <1% | 20% | 1.3–6.3°C |
| April | <1% | 24% | 1% | 24% | 6.4–11.9°C |
| May | 16% | 26% | 2% | 29% | 12.9–17.4°C |
| June | 62% | 19% | 2% | 20% | 18.7–23.8°C |
| July | 72% | 26% | 3% | 31% | 22.4–25.6°C |
| August | 69% | 26% | 3% | 27% | 21.7–24.4°C |
| September | 48% | 20% | 3% | 18% | 17.3–21.4°C |
| October | 6% | 16% | 2% | 12% | 10.6–15.2°C |
| November | 0% | 19% | <1% | 16% | 2.0–7.6°C |
| December | 0% | 21% | <1% | 22% | -3.1–0.7°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 5577516
- NOAA station
- USC00053500 · GRAND LAKE 6 SSW
- Station distance
- 12.2 km from the place centre
- Climate period
- 1991–2020
- Minimum month coverage
- 28 usable years
- Daylight
- Calculated from latitude 40.09°, 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.