September
September · August · June
80climate match
United States · 1991–2020
Best time to visit
Costin.
September leads for comfortable weather in Costin: typically 26°C by day, 8.4°C at night, with 31 mm of rain. Based on measured 1991–2020 NOAA station history.
Best comfortSeptember
Typical high26°C
Typical low8.4°C
Rain in September31 mm
August
August · July · June
73climate match
September
September · October · May
77climate match
The weakest month is January, scoring 5 against September’s 80 — days reach only 4.9°C, 19° below the 24°C the score treats as ideal, and nights drop to -9.4°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
54.9° / -9.4°
Feb
55.6° / -9.2°
Mar
2411.9° / -4.1°
Apr
4416.1° / 0.4°
May
6120.7° / 5.7°
Jun
7228.4° / 11.9°
Jul
6932.5° / 15.5°
Aug
7430.9° / 13.9°
Sep
8026° / 8.4°
Oct
5417.9° / 1.2°
Nov
2211.2° / -4.7°
Dec
54.5° / -9.8°
| Month | Day | Night | Rain | Wet days | Daylight | Comfort | Coverage |
|---|---|---|---|---|---|---|---|
| January | 4.9°C | -9.4°C | 8 mm | 2.1 | 9 h 27 | 5 | Good coverage |
| February | 5.6°C | -9.2°C | 12 mm | 3.2 | 10 h 31 | 5 | Good coverage |
| March | 11.9°C | -4.1°C | 28 mm | 4.5 | 11 h 48 | 24 | Good coverage |
| April | 16.1°C | 0.4°C | 43 mm | 6.1 | 13 h 17 | 44 | Good coverage |
| May | 20.7°C | 5.7°C | 77 mm | 8.9 | 14 h 31 | 61 | Good coverage |
| June | 28.4°C | 11.9°C | 64 mm | 7.8 | 15 h 12 | 72 | Good coverage |
| July | 32.5°C | 15.5°C | 36 mm | 5.2 | 14 h 56 | 69 | Good coverage |
| August | 30.9°C | 13.9°C | 34 mm | 4.6 | 13 h 52 | 74 | Good coverage |
| September | 26°C | 8.4°C | 31 mm | 4.2 | 12 h 26 | 80 | Good coverage |
| October | 17.9°C | 1.2°C | 26 mm | 4.3 | 11 h 00 | 54 | Good coverage |
| November | 11.2°C | -4.7°C | 12 mm | 2.7 | 9 h 45 | 22 | Good coverage |
| December | 4.5°C | -9.8°C | 13 mm | 3.2 | 9 h 09 | 5 | Good coverage |
| Month | Record high | Record low | Wettest day | Wettest / driest month | Years |
|---|---|---|---|---|---|
| January | 20.0°C28 Jan 2003 | -32.2°C1 Jan 2015 | 13 mm26 Jan 2009 | 36 mm2023 · driest 0 mm in 2008 | 24 |
| February | 23.3°C19 Feb 2016 | -30.6°C18 Feb 2006 | 14 mm24 Feb 2017 | 33 mm2024 · driest 1 mm in 2002 | 25 |
| March | 33.3°C22 Mar 2026 | -25.6°C5 Mar 2019 | 39 mm14 Mar 2021 | 67 mm2021 · driest 0 mm in 2012 | 25 |
| April | 32.2°C23 Apr 2022 | -15.0°C3 Apr 2020 | 36 mm18 Apr 2015 | 92 mm2016 · driest 8 mm in 2002 | 25 |
| May | 35.6°C23 May 2012 | -6.7°C2 May 2005 | 83 mm19 May 2018 | 231 mm2018 · driest 8 mm in 2012 | 25 |
| June | 40.6°C30 Jun 2002 | 1.1°C8 Jun 2007 | 48 mm13 Jun 2017 | 149 mm2009 · driest 6 mm in 2022 | 25 |
| July | 41.7°C17 Jul 2003 | 7.8°C27 Jul 2005 | 51 mm17 Jul 2018 | 111 mm2018 · driest 2 mm in 2006 | 24 |
| August | 40.6°C1 Aug 2002 | 3.9°C23 Aug 2015 | 44 mm8 Aug 2024 | 115 mm2002 · driest 1 mm in 2020 | 23 |
| September | 38.9°C6 Sep 2020 | -2.8°C23 Sep 2002 | 82 mm30 Sep 2014 | 115 mm2014 · driest 3 mm in 2010 | 23 |
| October | 32.2°C10 Oct 2003 | -22.2°C27 Oct 2020 | 41 mm9 Oct 2011 | 49 mm2011 · driest 2 mm in 2024 | 23 |
| November | 26.1°C3 Nov 2025 | -23.3°C30 Nov 2004 | 17 mm9 Nov 2024 | 28 mm2004 · driest 1 mm in 2006 | 24 |
| December | 24.4°C3 Dec 2021 | -32.2°C31 Dec 2014 | 16 mm15 Dec 2014 | 40 mm2014 · driest 0 mm in 2002 | 24 |
| Month | Days 25°C+ | Days 30°C+ | Frost nights | Heavy rain (10 mm+) | Snow days |
|---|---|---|---|---|---|
| January | 0 | 0 | 30 | <1 | 3 |
| February | 0 | 0 | 27 | <1 | 5 |
| March | 1 | 0 | 26 | <1 | 4 |
| April | 4 | <1 | 14 | 1 | 3 |
| May | 9 | 3 | 3 | 2 | <1 |
| June | 23 | 12 | 0 | 2 | <1 |
| July | 29 | 23 | 0 | 1 | <1 |
| August | 27 | 20 | 0 | 1 | 0 |
| September | 18 | 9 | <1 | <1 | <1 |
| October | 6 | <1 | 12 | <1 | 1 |
| November | <1 | 0 | 26 | <1 | 3 |
| December | 0 | 0 | 30 | <1 | 5 |
| Month | Warm & dry days | Wet days | Washouts | Week with 3+ wet days | Daytime mean has ranged |
|---|---|---|---|---|---|
| January | <1% | 8% | <1% | 4% | 1.4–7.5°C |
| February | 2% | 13% | <1% | 7% | 1.5–9.5°C |
| March | 17% | 14% | 3% | 10% | 8.2–15.1°C |
| April | 32% | 19% | 4% | 18% | 13.9–18.2°C |
| May | 48% | 29% | 8% | 32% | 17.7–23.6°C |
| June | 74% | 24% | 7% | 23% | 26.1–31.5°C |
| July | 82% | 17% | 4% | 12% | 30.3–34.9°C |
| August | 85% | 15% | 3% | 9% | 29.2–32.5°C |
| September | 76% | 14% | 3% | 9% | 24.9–28.5°C |
| October | 44% | 13% | 2% | 6% | 14.8–21.5°C |
| November | 13% | 9% | <1% | 3% | 8.5–14.1°C |
| December | 1% | 9% | <1% | 6% | 1.0–9.2°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 5694505
- NOAA station
- USC00257667 · SCOTTSBLUFF 1E
- Station distance
- 7.6 km from the place centre
- Climate period
- 1991–2020
- Minimum month coverage
- 17 usable years
- Daylight
- Calculated from latitude 41.86°, 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.