July
July · August · September
United States · 1991–2020
July leads for comfortable weather in Tulalip Bay: typically 24°C by day, 12.9°C at night, with 25 mm of rain. Based on measured 1991–2020 NOAA station history.
July · August · September
August · July · September
September · June · July
The weakest month is January, scoring 5 against July’s 95 — days reach only 8.7°C, 15° below the 24°C the score treats as ideal.
Month by month
The bars show the comfort score. Day and night temperatures come from daily observed highs and lows; rain is the historical monthly estimate.
| Month | Day | Night | Rain | Wet days | Sea | Daylight | Comfort | Coverage |
|---|---|---|---|---|---|---|---|---|
| January | 8.7°C | 1.4°C | 125 mm | 16.2 | 8.0°C | 8 h 46 | 5 | Strong coverage |
| February | 10.2°C | 1.4°C | 85 mm | 12.7 | 7.9°C | 10 h 08 | 14 | Strong coverage |
| March | 12.5°C | 3°C | 107 mm | 15.6 | 8.2°C | 11 h 44 | 19 | Strong coverage |
| April | 15.5°C | 5.3°C | 83 mm | 11.9 | 8.9°C | 13 h 34 | 40 | Strong coverage |
| May | 18.8°C | 8.3°C | 67 mm | 10.1 | 9.9°C | 15 h 09 | 60 | Strong coverage |
| June | 21.1°C | 10.9°C | 58 mm | 9.1 | 10.9°C | 16 h 01 | 74 | Strong coverage |
| July | 24°C | 12.9°C | 25 mm | 4.1 | 11.6°C | 15 h 40 | 95 | Strong coverage |
| August | 24.4°C | 12.8°C | 25 mm | 3.9 | 11.9°C | 14 h 18 | 94 | Strong coverage |
| September | 21.3°C | 9.9°C | 51 mm | 7.2 | 11.4°C | 12 h 31 | 76 | Strong coverage |
| October | 16°C | 6.3°C | 97 mm | 12.2 | 10.2°C | 10 h 44 | 41 | Strong coverage |
| November | 11.4°C | 3°C | 137 mm | 15.6 | 9.3°C | 9 h 10 | 11 | Strong coverage |
| December | 8.1°C | 1.2°C | 132 mm | 15.1 | 8.5°C | 8 h 23 | 5 | Strong coverage |
What has changed
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.
| Month | Record high | Record low | Wettest day | Wettest / driest month | Years |
|---|---|---|---|---|---|
| January | 22.2°C31 Jan 1935 | -17.2°C18 Jan 1950 | 59 mm18 Jan 1986 | 248 mm1971 · driest 14 mm in 1985 | 113 |
| February | 23.3°C28 Feb 1986 | -16.7°C1 Feb 1950 | 61 mm2 Feb 1916 | 172 mm2020 · driest 10 mm in 1993 | 112 |
| March | 27.8°C30 Mar 2004 | -12.2°C4 Mar 1955 | 51 mm24 Mar 2018 | 193 mm2011 · driest 14 mm in 1965 | 111 |
| April | 30.6°C19 Apr 2016 | -5.0°C3 Apr 1918 | 36 mm28 Apr 1967 | 146 mm1917 · driest 16 mm in 2004 | 112 |
| May | 33.9°C18 May 2008 | -1.7°C1 May 1954 | 51 mm28 May 1948 | 162 mm1948 · driest 5 mm in 2019 | 111 |
| June | 38.3°C29 Jun 2021 | 2.2°C7 Jun 1919 | 52 mm1 Jun 1944 | 140 mm1956 · driest 0 mm in 2025 | 111 |
| July | 33.9°C7 Jul 1958 | 2.8°C6 Jul 1916 | 41 mm1 Jul 1954 | 91 mm1993 · driest 0 mm in 2023 | 111 |
| August | 37.8°C17 Aug 2020 | 3.3°C28 Aug 1918 | 43 mm26 Aug 1960 | 108 mm1960 · driest 0 mm in 1967 | 111 |
| September | 32.2°C17 Sep 2025 | -1.1°C24 Sep 1926 | 61 mm15 Sep 1926 | 138 mm1969 · driest 1 mm in 2022 | 111 |
| October | 28.3°C9 Oct 1934 | -5.6°C28 Oct 1917 | 50 mm5 Oct 1990 | 217 mm1975 · driest 2 mm in 1987 | 111 |
| November | 23.3°C2 Nov 1981 | -13.3°C11 Nov 1955 | 92 mm25 Nov 1990 | 223 mm1983 · driest 14 mm in 1952 | 112 |
| December | 18.9°C16 Dec 1980 | -15.0°C12 Dec 1919 | 64 mm3 Dec 2007 | 275 mm1933 · driest 19 mm in 1985 | 113 |
| Month | Days 25°C+ | Days 30°C+ | Frost nights | Heavy rain (10 mm+) |
|---|---|---|---|---|
| January | 0 | 0 | 10 | 4 |
| February | 0 | 0 | 10 | 2 |
| March | <1 | 0 | 6 | 3 |
| April | <1 | 0 | <1 | 3 |
| May | 2 | <1 | 0 | 2 |
| June | 4 | <1 | 0 | 2 |
| July | 11 | 2 | 0 | <1 |
| August | 13 | 2 | 0 | <1 |
| September | 4 | <1 | 0 | 1 |
| October | <1 | 0 | 2 | 3 |
| November | 0 | 0 | 7 | 4 |
| December | 0 | 0 | 10 | 4 |
The best month has moved. On the 1961–1990 numbers the strongest month here was August (scoring 90); on 2011–2025 it is July (95). Both are scored the same way, from the same station — only the climate underneath changed.
| Month | Warm & dry days | Wet days | Washouts | Week with 3+ wet days | Daytime mean has ranged |
|---|---|---|---|---|---|
| January | <1% | 52% | 12% | 70% | 4.6–10.1°C |
| February | <1% | 47% | 9% | 65% | 7.0–11.7°C |
| March | 1% | 48% | 9% | 65% | 9.8–13.6°C |
| April | 7% | 39% | 7% | 53% | 12.8–16.5°C |
| May | 23% | 31% | 6% | 36% | 16.1–20.1°C |
| June | 48% | 27% | 5% | 32% | 18.6–22.4°C |
| July | 78% | 13% | 3% | 8% | 21.1–25.3°C |
| August | 77% | 15% | 3% | 16% | 21.1–25.4°C |
| September | 45% | 24% | 5% | 28% | 18.2–22.5°C |
| October | 8% | 37% | 10% | 52% | 13.8–17.1°C |
| November | <1% | 51% | 14% | 71% | 9.1–12.7°C |
| December | 0% | 53% | 14% | 72% | 5.4–9.7°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