September
September · July · June
85climate match
United States · 1991–2020
Best time to visit
Hayden.
September leads for comfortable weather in Hayden: typically 23.1°C by day, 9°C at night, with 24 mm of rain. Based on measured 1991–2020 NOAA station history.
Best comfortSeptember
Typical high23.1°C
Typical low9°C
Rain in September24 mm
July
July · August · September
80climate match
September
September · June · May
87climate match
The weakest month is January, scoring 5 against September’s 85 — days reach only 2.6°C, 21° 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
52.6° / -3.2°
Feb
54.8° / -3.3°
Mar
119° / -0.8°
Apr
3513.4° / 2.3°
May
5918.7° / 6.7°
Jun
8222.7° / 10.7°
Jul
8328.7° / 14.1°
Aug
8228.8° / 13.5°
Sep
8523.1° / 9°
Oct
4014.7° / 3.5°
Nov
57.4° / -0.1°
Dec
52.4° / -3.4°
| Month | Day | Night | Rain | Wet days | Daylight | Comfort | Coverage |
|---|---|---|---|---|---|---|---|
| January | 2.6°C | -3.2°C | 87 mm | 12.3 | 8 h 48 | 5 | Good coverage |
| February | 4.8°C | -3.3°C | 56 mm | 9.3 | 10 h 09 | 5 | Good coverage |
| March | 9°C | -0.8°C | 68 mm | 10.3 | 11 h 44 | 11 | Good coverage |
| April | 13.4°C | 2.3°C | 49 mm | 9.3 | 13 h 34 | 35 | Good coverage |
| May | 18.7°C | 6.7°C | 54 mm | 9.1 | 15 h 07 | 59 | Strong coverage |
| June | 22.7°C | 10.7°C | 49 mm | 7.4 | 15 h 59 | 82 | Good coverage |
| July | 28.7°C | 14.1°C | 17 mm | 3 | 15 h 38 | 83 | Strong coverage |
| August | 28.8°C | 13.5°C | 18 mm | 3 | 14 h 17 | 82 | Strong coverage |
| September | 23.1°C | 9°C | 24 mm | 4.8 | 12 h 30 | 85 | Strong coverage |
| October | 14.7°C | 3.5°C | 59 mm | 8.7 | 10 h 45 | 40 | Good coverage |
| November | 7.4°C | -0.1°C | 82 mm | 11.7 | 9 h 12 | 5 | Good coverage |
| December | 2.4°C | -3.4°C | 98 mm | 11.9 | 8 h 25 | 5 | Strong coverage |
What has changed
Hayden runs -0.2°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
+0.7
Feb
-1.8
Mar
-0.1
Apr
-0.9
May
-0.3
Jun
-1.1
Jul
+0.2
Aug
-0.3
Sep
+0.5
Oct
-0.6
Nov
+0.6
Dec
+0.5
| Month | Record high | Record low | Wettest day | Wettest / driest month | Years |
|---|---|---|---|---|---|
| January | 15.6°C1 Jan 1918 | -34.4°C30 Jan 1950 | 89 mm4 Jan 1998 | 221 mm1998 · driest 10 mm in 1985 | 108 |
| February | 16.7°C29 Feb 1968 | -32.8°C1 Feb 1950 | 49 mm15 Feb 1982 | 165 mm1940 · driest 1 mm in 2005 | 108 |
| March | 23.3°C27 Mar 2025 | -25.0°C4 Mar 1955 | 31 mm30 Mar 2012 | 156 mm2012 · driest 0 mm in 2023 | 105 |
| April | 34.4°C25 Apr 1977 | -15.0°C1 Apr 1936 | 53 mm12 Apr 1982 | 112 mm1937 · driest 1 mm in 2024 | 107 |
| May | 36.7°C30 May 1983 | -6.1°C30 May 1951 | 55 mm21 May 1925 | 164 mm1957 · driest 4 mm in 2025 | 111 |
| June | 42.2°C30 Jun 2021 | -2.2°C11 Jun 1946 | 46 mm8 Jun 1964 | 127 mm1947 · driest 2 mm in 1900 | 110 |
| July | 42.2°C1 Jul 2021 | 2.2°C3 Jul 1944 | 34 mm28 Jul 1948 | 94 mm1948 · driest 0 mm in 1960 | 111 |
| August | 42.8°C4 Aug 1961 | 0.0°C31 Aug 1898 | 40 mm7 Aug 1999 | 93 mm1926 · driest 0 mm in 1909 | 108 |
| September | 38.9°C3 Sep 2025 | -8.3°C24 Sep 1926 | 50 mm5 Sep 1940 | 160 mm1927 · driest 0 mm in 1975 | 108 |
| October | 31.1°C4 Oct 1907 | -16.7°C31 Oct 1935 | 38 mm5 Oct 1997 | 192 mm1997 · driest 0 mm in 1895 | 106 |
| November | 21.7°C5 Nov 1975 | -24.4°C16 Nov 1955 | 39 mm23 Nov 1942 | 222 mm1973 · driest 1 mm in 1929 | 104 |
| December | 15.6°C29 Dec 1917 | -32.2°C30 Dec 1968 | 76 mm27 Dec 1997 | 252 mm1933 · driest 10 mm in 1960 | 107 |
| Month | Days 25°C+ | Days 30°C+ | Frost nights | Heavy rain (10 mm+) | Snow days |
|---|---|---|---|---|---|
| January | 0 | 0 | 24 | 3 | 4 |
| February | 0 | 0 | 22 | 1 | 3 |
| March | 0 | 0 | 18 | 2 | 1 |
| April | <1 | 0 | 7 | 1 | <1 |
| May | 5 | <1 | <1 | 2 | 0 |
| June | 11 | 2 | 0 | 1 | 0 |
| July | 24 | 13 | 0 | <1 | 0 |
| August | 25 | 14 | 0 | <1 | 0 |
| September | 11 | 3 | <1 | <1 | 0 |
| October | 1 | 0 | 5 | 2 | <1 |
| November | 0 | 0 | 15 | 3 | 1 |
| December | 0 | 0 | 24 | 3 | 4 |
| Month | Warm & dry days | Wet days | Washouts | Week with 3+ wet days | Daytime mean has ranged |
|---|---|---|---|---|---|
| January | 0% | 37% | 8% | 50% | -1.1–4.3°C |
| February | 0% | 33% | 6% | 43% | 2.1–7.7°C |
| March | 1% | 32% | 5% | 41% | 6.4–12.1°C |
| April | 16% | 26% | 4% | 29% | 11.7–17.9°C |
| May | 44% | 27% | 4% | 31% | 16.9–23.1°C |
| June | 66% | 24% | 5% | 26% | 21.3–26.7°C |
| July | 89% | 9% | 2% | 5% | 27.0–31.6°C |
| August | 88% | 11% | 2% | 9% | 26.6–31.8°C |
| September | 66% | 17% | 3% | 16% | 20.3–26.6°C |
| October | 21% | 25% | 5% | 31% | 13.6–18.4°C |
| November | <1% | 36% | 9% | 49% | 4.6–9.1°C |
| December | 0% | 39% | 10% | 55% | -0.3–4.7°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 5595320
- NOAA station
- USC00101956 · COEUR D'ALENE
- Station distance
- 9.4 km from the place centre
- Climate period
- 1991–2020
- Minimum month coverage
- 21 usable years
- Daylight
- Calculated from latitude 47.77°, 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.