September
September · August · July
79climate match
United States · 1991–2020
Best time to visit
Poplar Grove.
September leads for comfortable weather in Poplar Grove: typically 23.7°C by day, 10.7°C at night, with 96 mm of rain. Based on measured 1991–2020 NOAA station history.
Best comfortSeptember
Typical high23.7°C
Typical low10.7°C
Rain in September96 mm
July
July · August · June
68climate match
May
May · September · October
76climate match
The weakest month is January, scoring 5 against September’s 79 — days reach only -2.4°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
5-2.4° / -11.5°
Feb
5-0.7° / -10.3°
Mar
56.6° / -3.6°
Apr
3114.2° / 2.4°
May
6120.5° / 8.6°
Jun
7226° / 14.5°
Jul
7327.9° / 16.2°
Aug
7726.9° / 14.9°
Sep
7923.7° / 10.7°
Oct
4315.6° / 3.9°
Nov
118° / -1.7°
Dec
50.6° / -8.1°
| Month | Day | Night | Rain | Wet days | Daylight | Comfort | Coverage |
|---|---|---|---|---|---|---|---|
| January | -2.4°C | -11.5°C | 39 mm | 5.8 | 9 h 24 | 5 | Good coverage |
| February | -0.7°C | -10.3°C | 38 mm | 5.7 | 10 h 29 | 5 | Good coverage |
| March | 6.6°C | -3.6°C | 55 mm | 6.6 | 11 h 48 | 5 | Good coverage |
| April | 14.2°C | 2.4°C | 95 mm | 8.9 | 13 h 18 | 31 | Good coverage |
| May | 20.5°C | 8.6°C | 105 mm | 10 | 14 h 34 | 61 | Good coverage |
| June | 26°C | 14.5°C | 139 mm | 9.1 | 15 h 16 | 72 | Good coverage |
| July | 27.9°C | 16.2°C | 95 mm | 7.1 | 14 h 59 | 73 | Good coverage |
| August | 26.9°C | 14.9°C | 106 mm | 7 | 13 h 54 | 77 | Good coverage |
| September | 23.7°C | 10.7°C | 96 mm | 6.9 | 12 h 26 | 79 | Good coverage |
| October | 15.6°C | 3.9°C | 74 mm | 7.1 | 10 h 59 | 43 | Good coverage |
| November | 8°C | -1.7°C | 61 mm | 5.8 | 9 h 43 | 11 | Good coverage |
| December | 0.6°C | -8.1°C | 50 mm | 6.1 | 9 h 05 | 5 | Good coverage |
| Month | Record high | Record low | Wettest day | Wettest / driest month | Years |
|---|---|---|---|---|---|
| January | 16.1°C7 Jan 2008 | -33.3°C16 Jan 2009 | 45 mm2 Jan 2006 | 126 mm2005 · driest 3 mm in 2022 | 24 |
| February | 22.2°C28 Feb 2024 | -29.4°C8 Feb 2021 | 32 mm24 Feb 2007 | 129 mm2008 · driest 5 mm in 2003 | 24 |
| March | 27.8°C22 Mar 2012 | -27.2°C3 Mar 2002 | 100 mm12 Mar 2006 | 155 mm2006 · driest 12 mm in 2018 | 24 |
| April | 32.2°C18 Apr 2002 | -10.0°C8 Apr 2003 | 69 mm18 Apr 2013 | 227 mm2026 · driest 28 mm in 2021 | 24 |
| May | 35.6°C28 May 2012 | -5.6°C17 May 2002 | 51 mm8 May 2024 | 193 mm2004 · driest 14 mm in 2026 | 24 |
| June | 36.7°C29 Jun 2012 | 3.3°C12 Jun 2023 | 138 mm19 Jun 2018 | 357 mm2013 · driest 22 mm in 2012 | 24 |
| July | 38.9°C7 Jul 2012 | 7.2°C16 Jul 2014 | 81 mm11 Jul 2008 | 232 mm2017 · driest 14 mm in 2002 | 23 |
| August | 35.6°C31 Aug 2013 | 3.9°C31 Aug 2009 | 96 mm6 Aug 2007 | 413 mm2007 · driest 26 mm in 2003 | 22 |
| September | 35.0°C24 Sep 2017 | -2.2°C30 Sep 2003 | 80 mm12 Sep 2019 | 260 mm2019 · driest 5 mm in 2017 | 24 |
| October | 31.7°C4 Oct 2025 | -9.4°C16 Oct 2003 | 69 mm14 Oct 2023 | 153 mm2017 · driest 7 mm in 2005 | 25 |
| November | 23.9°C2 Nov 2016 | -20.0°C12 Nov 2019 | 52 mm5 Nov 2005 | 148 mm2015 · driest 5 mm in 2007 | 25 |
| December | 18.9°C4 Dec 2012 | -28.9°C19 Dec 2016 | 53 mm9 Dec 2003 | 156 mm2015 · driest 12 mm in 2017 | 25 |
| Month | Days 25°C+ | Days 30°C+ | Frost nights | Heavy rain (10 mm+) | Snow days |
|---|---|---|---|---|---|
| January | 0 | 0 | 29 | 1 | 6 |
| February | 0 | 0 | 26 | 2 | 6 |
| March | <1 | 0 | 22 | 2 | 3 |
| April | 2 | <1 | 10 | 3 | <1 |
| May | 7 | 2 | 2 | 4 | 0 |
| June | 19 | 6 | 0 | 4 | 0 |
| July | 26 | 9 | 0 | 3 | 0 |
| August | 24 | 5 | 0 | 4 | 0 |
| September | 13 | 3 | <1 | 3 | 0 |
| October | 3 | <1 | 9 | 3 | <1 |
| November | 0 | 0 | 19 | 2 | 1 |
| December | 0 | 0 | 27 | 2 | 4 |
| Month | Warm & dry days | Wet days | Washouts | Week with 3+ wet days | Daytime mean has ranged |
|---|---|---|---|---|---|
| January | 0% | 18% | 3% | 15% | -5.4–0.0°C |
| February | <1% | 18% | 3% | 14% | -5.8–3.9°C |
| March | 3% | 22% | 6% | 24% | 3.7–9.9°C |
| April | 15% | 31% | 10% | 38% | 11.5–17.5°C |
| May | 42% | 30% | 10% | 36% | 18.9–22.4°C |
| June | 68% | 29% | 13% | 34% | 24.6–27.8°C |
| July | 76% | 25% | 11% | 25% | 25.4–30.1°C |
| August | 75% | 24% | 12% | 23% | 25.1–28.2°C |
| September | 65% | 23% | 10% | 24% | 22.0–25.7°C |
| October | 23% | 23% | 8% | 26% | 12.9–19.1°C |
| November | 4% | 20% | 7% | 16% | 4.2–11.4°C |
| December | 0% | 20% | 5% | 18% | -2.9–3.8°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 4906482
- NOAA station
- USC00471667 · CLINTON WWTP
- Station distance
- 20.6 km from the place centre
- Climate period
- 1991–2020
- Minimum month coverage
- 17 usable years
- Daylight
- Calculated from latitude 42.37°, 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.