Amasa 1W Weather Records (USC00200197)
Record envelope, standing records and threshold days for Amasa 1W (USC00200197), Michigan, United States, with 33 years of record.
Key Facts for Amasa 1W
- Amasa 1W (USC00200197) is a weather station in Michigan, United States at 46.23 latitude and -88.45 longitude, 448 m (1,470 ft) above sea level.
- The station reports from 1994 to 2026, 33 years of record.
- 1,464 records set at Amasa 1W still stand.
- Records are tracked for tmax, tmin: an element needs 30 years of data to be eligible.
- Amasa 1W tied a daily record high minimum temperature of 12.2 C (54.0 F) on 30 September 2026 (provisional).
Provisional Records
Records set in the last 60 days are provisional until they clear the revision window.
About the Station
- Location: Michigan, United States, 46.23 latitude, -88.45 longitude.
- Elevation: 448 m (1,470 ft).
- Period of record: 1994 to 2026, 33 years.
- Eligible elements: tmax, tmin.
Daily Record Envelope and 2026
17 days at or beyond a record| Month | Highest record high | Lowest record low | 2026 highest maximum | 2026 lowest minimum |
|---|---|---|---|---|
| Jan | 10.0 C (50.0 F) | -40.6 C (-41.1 F) | 4.4 C (39.9 F) | -36.1 C (-33.0 F) |
| Feb | 17.8 C (64.0 F) | -43.9 C (-47.0 F) | 11.1 C (52.0 F) | -27.2 C (-17.0 F) |
| Mar | 26.1 C (79.0 F) | -35.0 C (-31.0 F) | 15.6 C (60.1 F) | -22.2 C (-8.0 F) |
| Apr | 29.4 C (84.9 F) | -26.1 C (-15.0 F) | 26.7 C (80.1 F) | -18.3 C (-0.9 F) |
| May | 32.8 C (91.0 F) | -10.0 C (14.0 F) | 31.7 C (89.1 F) | -7.2 C (19.0 F) |
| Jun | 36.7 C (98.1 F) | -2.8 C (27.0 F) | 28.3 C (82.9 F) | 1.7 C (35.1 F) |
| Jul | 37.8 C (100.0 F) | -0.6 C (30.9 F) | 37.8 C (100.0 F) | 6.1 C (43.0 F) |
| Aug | 35.0 C (95.0 F) | 0.0 C (32.0 F) | 30.6 C (87.1 F) | 2.8 C (37.0 F) |
| Sep | 35.0 C (95.0 F) | -4.4 C (24.1 F) | 28.3 C (82.9 F) | -0.6 C (30.9 F) |
| Oct | 30.0 C (86.0 F) | -13.9 C (7.0 F) | n/a | n/a |
| Nov | 23.9 C (75.0 F) | -24.4 C (-11.9 F) | n/a | n/a |
| Dec | 16.7 C (62.1 F) | -36.1 C (-33.0 F) | n/a | n/a |
Which Years Hold Standing Records
1,464 standing records| Year set | Standing records |
|---|---|
| 1994 | 10 |
| 1995 | 43 |
| 1996 | 79 |
| 1997 | 66 |
| 1998 | 54 |
| 1999 | 42 |
| 2000 | 34 |
| 2001 | 48 |
| 2002 | 39 |
| 2003 | 25 |
| 2004 | 40 |
| 2005 | 36 |
| 2006 | 45 |
| 2007 | 39 |
| 2008 | 31 |
| 2009 | 36 |
| 2010 | 46 |
| 2011 | 31 |
| 2012 | 54 |
| 2013 | 34 |
| 2014 | 61 |
| 2015 | 46 |
| 2016 | 36 |
| 2017 | 56 |
| 2018 | 67 |
| 2019 | 37 |
| 2020 | 44 |
| 2021 | 73 |
| 2022 | 47 |
| 2023 | 49 |
| 2024 | 54 |
| 2025 | 35 |
| 2026 | 27 |
All-Time Record Progression
2 new records| Date | Kind | Detail |
|---|---|---|
| 2025-06-23 | Record high minimum temperature | Record high minimum temperature 25.0 C (77.0 F) |
| 2026-07-14 | Record high maximum temperature | Record high maximum temperature 37.8 C (100.0 F) |
Wettest Day of Each Month
Sep: 121.9 mm (4.8 in)| Month | Record daily precipitation (mm) | Date |
|---|---|---|
| Jan | 28.4 mm (1.1 in) | 19 January 1996 |
| Feb | 29.0 mm (1.1 in) | 12 February 1999 |
| Mar | 50.8 mm (2.0 in) | 3 March 2007 |
| Apr | 57.2 mm (2.3 in) | 19 April 2004 |
| May | 40.6 mm (1.6 in) | 18 May 1999 |
| Jun | 52.1 mm (2.1 in) | 12 June 1998 |
| Jul | 66.0 mm (2.6 in) | 28 July 2010 |
| Aug | 61.0 mm (2.4 in) | 16 August 1997 |
| Sep | 121.9 mm (4.8 in) | 9 September 2025 |
| Oct | 44.2 mm (1.7 in) | 18 October 2016 |
| Nov | 31.5 mm (1.2 in) | 11 November 2014 |
| Dec | 38.4 mm (1.5 in) | 29 December 2025 |
Period of Record Coverage
1994 to 2026| Year | Days with data | Share of year | Complete |
|---|---|---|---|
| 1994 | 58 | 16% | No |
| 1995 | 323 | 88% | No |
| 1996 | 361 | 99% | Yes |
| 1997 | 362 | 99% | Yes |
| 1998 | 364 | 100% | Yes |
| 1999 | 334 | 92% | Yes |
| 2000 | 292 | 80% | No |
| 2001 | 312 | 85% | No |
| 2002 | 276 | 76% | No |
| 2003 | 262 | 72% | No |
| 2004 | 301 | 82% | No |
| 2005 | 220 | 60% | No |
| 2006 | 332 | 91% | Yes |
| 2007 | 229 | 63% | No |
| 2008 | 316 | 86% | No |
| 2009 | 342 | 94% | Yes |
| 2010 | 330 | 90% | Yes |
| 2011 | 312 | 85% | No |
| 2012 | 342 | 93% | Yes |
| 2013 | 305 | 84% | No |
| 2014 | 318 | 87% | No |
| 2015 | 357 | 98% | Yes |
| 2016 | 365 | 100% | Yes |
| 2017 | 362 | 99% | Yes |
| 2018 | 360 | 99% | Yes |
| 2019 | 354 | 97% | Yes |
| 2020 | 358 | 98% | Yes |
| 2021 | 358 | 98% | Yes |
| 2022 | 358 | 98% | Yes |
| 2023 | 358 | 98% | Yes |
| 2024 | 362 | 99% | Yes |
| 2025 | 353 | 97% | Yes |
| 2026 | 248 | 68% | No |
Latest Records
20| Date | Station | Record | Value | Beat old record by | Old record stood | Significance |
|---|---|---|---|---|---|---|
| 30 September 2026 | Amasa 1W, US | daily high min (Tie, Provisional) | 12.2 C (54.0 F) | tie | 3 years | 0 of 100 (Routine) |
| 12 September 2026 | Amasa 1W, US | daily high min (Tie, Provisional) | 15.6 C (60.1 F) | tie | 13 years | 1 of 100 (Routine) |
| 27 July 2026 | Amasa 1W, US | daily high min | 18.9 C (66.0 F) | 2.2 C (4.0 F) | 25 years | 15 of 100 (Routine) |
| 25 July 2026 | Amasa 1W, US | daily high min | 17.8 C (64.0 F) | 1.1 C (2.0 F) | 5 years | 6 of 100 (Routine) |
| 16 July 2026 | Amasa 1W, US | daily high max (Tie) | 36.7 C (98.1 F) | tie | 20 years | 2 of 100 (Routine) |
| 15 July 2026 | Amasa 1W, US | daily high max | 36.7 C (98.1 F) | 4.5 C (8.1 F) | 20 years | 19 of 100 (Routine) |
| 14 July 2026 | Amasa 1W, US | all-time high max | 37.8 C (100.0 F) | 1.1 C (2.0 F) | 31 years | 34 of 100 (Routine) |
| 14 July 2026 | Amasa 1W, US | daily high min | 20.0 C (68.0 F) | 1.1 C (2.0 F) | 31 years | 14 of 100 (Routine) |
| 13 July 2026 | Amasa 1W, US | daily high max | 33.3 C (91.9 F) | 1.6 C (2.9 F) | 20 years | 12 of 100 (Routine) |
| 13 July 2026 | Amasa 1W, US | daily high min (Tie) | 18.9 C (66.0 F) | tie | 11 years | 1 of 100 (Routine) |
| 1 July 2026 | Amasa 1W, US | daily high max | 33.9 C (93.0 F) | 0.6 C (1.1 F) | 24 years | 11 of 100 (Routine) |
| 22 June 2026 | Amasa 1W, US | daily low max (Tie) | 15.0 C (59.0 F) | tie | 4 years | 1 of 100 (Routine) |
| 18 June 2026 | Amasa 1W, US | daily low max | 17.2 C (63.0 F) | 0.6 C (1.1 F) | 12 years | 7 of 100 (Routine) |
| 30 May 2026 | Amasa 1W, US | daily high max | 31.1 C (88.0 F) | 0.5 C (0.9 F) | 27 years | 11 of 100 (Routine) |
| 27 May 2026 | Amasa 1W, US | daily high max (Tie) | 31.7 C (89.1 F) | tie | 8 years | 1 of 100 (Routine) |
| 16 May 2026 | Amasa 1W, US | daily high max (Tie) | 28.3 C (82.9 F) | tie | 28 years | 2 of 100 (Routine) |
| 14 May 2026 | Amasa 1W, US | daily low min | -2.8 C (27.0 F) | 1.1 C (2.0 F) | 27 years | 13 of 100 (Routine) |
| 11 May 2026 | Amasa 1W, US | daily low min (Tie) | -6.1 C (21.0 F) | tie | 8 years | 1 of 100 (Routine) |
| 7 May 2026 | Amasa 1W, US | daily low max | 5.6 C (42.1 F) | 2.2 C (4.0 F) | 13 years | 10 of 100 (Routine) |
| 27 April 2026 | Amasa 1W, US | daily high min | 6.1 C (43.0 F) | 2.8 C (5.0 F) | 1 year | 8 of 100 (Routine) |
Climate Trend
21 complete years, 1996 to 2025| Year | Annual mean temperature | Difference from the station mean |
|---|---|---|
| 1996 | 2.3 C | -2.29 C |
| 1997 | 3.6 C | -0.99 C |
| 1998 | 6.2 C | +1.62 C |
| 2001 | 5.7 C | +1.19 C |
| 2006 | 5.2 C | +0.69 C |
| 2009 | 3.3 C | -1.22 C |
| 2010 | 5.7 C | +1.13 C |
| 2012 | 6.1 C | +1.50 C |
| 2013 | 3.3 C | -1.23 C |
| 2014 | 2.1 C | -2.45 C |
| 2015 | 4.6 C | +0.05 C |
| 2016 | 5.8 C | +1.20 C |
| 2017 | 4.6 C | +0.02 C |
| 2018 | 2.4 C | -2.20 C |
| 2019 | 3.1 C | -1.42 C |
| 2020 | 4.8 C | +0.23 C |
| 2021 | 5.3 C | +0.79 C |
| 2022 | 4.2 C | -0.36 C |
| 2023 | 5.7 C | +1.10 C |
| 2024 | 6.8 C | +2.24 C |
| 2025 | 5.1 C | +0.50 C |
This station does not have enough complete years (30 are needed) to fit a temperature trend.
A year is complete when all 12 months have at least 20 days of both daily maximum and daily minimum readings. The annual mean is the mean of the monthly means. The trend describes this one station over this period; it does not say what caused the change.
Extremes by Year
1994 to 2026| Measure | Record | Year of the record | Median year | Years with a value |
|---|---|---|---|---|
| Hottest day (TXx) | 37.8 C (100.0 F) | 2026 | 33.3 C (91.9 F) | 33 |
| Coldest night (TNn) | -43.9 C (-47.0 F) | 1996 | -33.3 C (-27.9 F) | 33 |
| Wettest day (Rx1day) | 121.9 mm (4.8 in) | 2025 | 40.6 mm (1.6 in) | 33 |
| Wettest five days (Rx5day) | 145.8 mm (5.7 in) | 2025 | 63.7 mm (2.5 in) | 33 |
| Longest dry spell (CDD) | 48 days | 2010 | 15 days | 33 |
Hottest day (TXx)
| Year | Hottest day (TXx) |
|---|---|
| 1994 | 12.2 C (54.0 F) |
| 1995 | 36.7 C (98.1 F) |
| 1996 | 32.8 C (91.0 F) |
| 1997 | 30.6 C (87.1 F) |
| 1998 | 35.0 C (95.0 F) |
| 1999 | 35.6 C (96.1 F) |
| 2000 | 31.7 C (89.1 F) |
| 2001 | 35.0 C (95.0 F) |
| 2002 | 35.0 C (95.0 F) |
| 2003 | 31.1 C (88.0 F) |
| 2004 | 31.1 C (88.0 F) |
| 2005 | 33.9 C (93.0 F) |
| 2006 | 36.7 C (98.1 F) |
| 2007 | 32.2 C (90.0 F) |
| 2008 | 31.1 C (88.0 F) |
| 2009 | 32.2 C (90.0 F) |
| 2010 | 32.8 C (91.0 F) |
| 2011 | 35.6 C (96.1 F) |
| 2012 | 33.3 C (91.9 F) |
| 2013 | 34.4 C (93.9 F) |
| 2014 | 31.1 C (88.0 F) |
| 2015 | 32.8 C (91.0 F) |
| 2016 | 33.9 C (93.0 F) |
| 2017 | 32.2 C (90.0 F) |
| 2018 | 32.2 C (90.0 F) |
| 2019 | 33.9 C (93.0 F) |
| 2020 | 33.3 C (91.9 F) |
| 2021 | 34.4 C (93.9 F) |
| 2022 | 36.1 C (97.0 F) |
| 2023 | 34.4 C (93.9 F) |
| 2024 | 33.3 C (91.9 F) |
| 2025 | 34.4 C (93.9 F) |
| 2026 | 37.8 C (100.0 F) |
Coldest night (TNn)
| Year | Coldest night (TNn) |
|---|---|
| 1994 | -23.3 C (-9.9 F) |
| 1995 | -32.8 C (-27.0 F) |
| 1996 | -43.9 C (-47.0 F) |
| 1997 | -33.9 C (-29.0 F) |
| 1998 | -27.2 C (-17.0 F) |
| 1999 | -34.4 C (-29.9 F) |
| 2000 | -33.9 C (-29.0 F) |
| 2001 | -31.7 C (-25.1 F) |
| 2002 | -26.1 C (-15.0 F) |
| 2003 | -33.9 C (-29.0 F) |
| 2004 | -35.0 C (-31.0 F) |
| 2005 | -28.3 C (-18.9 F) |
| 2006 | -31.1 C (-24.0 F) |
| 2007 | -31.1 C (-24.0 F) |
| 2008 | -31.1 C (-24.0 F) |
| 2009 | -35.6 C (-32.1 F) |
| 2010 | -29.4 C (-20.9 F) |
| 2011 | -31.7 C (-25.1 F) |
| 2012 | -30.0 C (-22.0 F) |
| 2013 | -31.7 C (-25.1 F) |
| 2014 | -36.1 C (-33.0 F) |
| 2015 | -37.2 C (-35.0 F) |
| 2016 | -40.0 C (-40.0 F) |
| 2017 | -36.1 C (-33.0 F) |
| 2018 | -37.2 C (-35.0 F) |
| 2019 | -40.0 C (-40.0 F) |
| 2020 | -32.2 C (-26.0 F) |
| 2021 | -43.3 C (-45.9 F) |
| 2022 | -39.4 C (-38.9 F) |
| 2023 | -33.3 C (-27.9 F) |
| 2024 | -23.9 C (-11.0 F) |
| 2025 | -32.2 C (-26.0 F) |
| 2026 | -36.1 C (-33.0 F) |
Wettest day (Rx1day)
| Year | Wettest day (Rx1day) |
|---|---|
| 1994 | 38.1 mm (1.5 in) |
| 1995 | 31.0 mm (1.2 in) |
| 1996 | 35.6 mm (1.4 in) |
| 1997 | 61.0 mm (2.4 in) |
| 1998 | 86.4 mm (3.4 in) |
| 1999 | 40.6 mm (1.6 in) |
| 2000 | 36.3 mm (1.4 in) |
| 2001 | 38.1 mm (1.5 in) |
| 2002 | 43.9 mm (1.7 in) |
| 2003 | 27.7 mm (1.1 in) |
| 2004 | 57.2 mm (2.3 in) |
| 2005 | 53.3 mm (2.1 in) |
| 2006 | 38.1 mm (1.5 in) |
| 2007 | 50.8 mm (2.0 in) |
| 2008 | 40.6 mm (1.6 in) |
| 2009 | 32.5 mm (1.3 in) |
| 2010 | 66.0 mm (2.6 in) |
| 2011 | 44.7 mm (1.8 in) |
| 2012 | 63.8 mm (2.5 in) |
| 2013 | 20.6 mm (0.8 in) |
| 2014 | 43.2 mm (1.7 in) |
| 2015 | 33.3 mm (1.3 in) |
| 2016 | 50.8 mm (2.0 in) |
| 2017 | 48.8 mm (1.9 in) |
| 2018 | 53.3 mm (2.1 in) |
| 2019 | 39.6 mm (1.6 in) |
| 2020 | 53.6 mm (2.1 in) |
| 2021 | 45.5 mm (1.8 in) |
| 2022 | 40.1 mm (1.6 in) |
| 2023 | 24.9 mm (1.0 in) |
| 2024 | 36.1 mm (1.4 in) |
| 2025 | 121.9 mm (4.8 in) |
| 2026 | 36.8 mm (1.4 in) |
Wettest five days (Rx5day)
| Year | Wettest five days (Rx5day) |
|---|---|
| 1994 | 63.5 mm (2.5 in) |
| 1995 | 33.6 mm (1.3 in) |
| 1996 | 15.2 mm (0.6 in) |
| 1997 | 88.0 mm (3.5 in) |
| 1998 | 58.0 mm (2.3 in) |
| 1999 | 62.5 mm (2.5 in) |
| 2000 | 63.7 mm (2.5 in) |
| 2001 | 48.8 mm (1.9 in) |
| 2002 | 83.5 mm (3.3 in) |
| 2003 | 55.8 mm (2.2 in) |
| 2004 | 63.8 mm (2.5 in) |
| 2005 | 64.7 mm (2.5 in) |
| 2006 | 53.3 mm (2.1 in) |
| 2007 | 80.2 mm (3.2 in) |
| 2008 | 55.6 mm (2.2 in) |
| 2009 | 58.4 mm (2.3 in) |
| 2010 | 82.8 mm (3.3 in) |
| 2011 | 75.5 mm (3.0 in) |
| 2012 | 113.9 mm (4.5 in) |
| 2013 | 43.2 mm (1.7 in) |
| 2014 | 57.7 mm (2.3 in) |
| 2015 | 72.6 mm (2.9 in) |
| 2016 | 107.2 mm (4.2 in) |
| 2017 | 70.8 mm (2.8 in) |
| 2018 | 65.7 mm (2.6 in) |
| 2019 | 68.9 mm (2.7 in) |
| 2020 | 75.2 mm (3.0 in) |
| 2021 | 66.6 mm (2.6 in) |
| 2022 | 57.6 mm (2.3 in) |
| 2023 | 54.6 mm (2.1 in) |
| 2024 | 44.0 mm (1.7 in) |
| 2025 | 145.8 mm (5.7 in) |
| 2026 | 42.7 mm (1.7 in) |
Longest dry spell (CDD)
| Year | Longest dry spell (CDD) |
|---|---|
| 1994 | 13 days |
| 1995 | 9 days |
| 1996 | 4 days |
| 1997 | 19 days |
| 1998 | 25 days |
| 1999 | 7 days |
| 2000 | 13 days |
| 2001 | 12 days |
| 2002 | 18 days |
| 2003 | 15 days |
| 2004 | 12 days |
| 2005 | 13 days |
| 2006 | 17 days |
| 2007 | 16 days |
| 2008 | 19 days |
| 2009 | 18 days |
| 2010 | 48 days |
| 2011 | 14 days |
| 2012 | 17 days |
| 2013 | 14 days |
| 2014 | 8 days |
| 2015 | 11 days |
| 2016 | 17 days |
| 2017 | 13 days |
| 2018 | 26 days |
| 2019 | 17 days |
| 2020 | 22 days |
| 2021 | 16 days |
| 2022 | 14 days |
| 2023 | 15 days |
| 2024 | 27 days |
| 2025 | 16 days |
| 2026 | 12 days |
Each chart shows one value per year; the dot marks the record year. TXx is the hottest daily maximum, TNn the coldest daily minimum, Rx1day and Rx5day the largest one-day and five-day rain totals, and CDD the longest run of days with less than 1 mm of rain. A year with missing days can understate an extreme.
Frost Dates and Growing Season
21 years with a frostAcross 21 years with a frost, the median last spring frost at Amasa 1W falls on 6 June and the median first autumn frost on 14 September, which leaves a median of 100 days between them.
| Measure | Median, all years | Earliest period | Recent period (1996 to 2025) | Recent against earliest | Fitted trend |
|---|---|---|---|---|---|
| Last spring frost | 6 June | n/a | 6 June | n/a | n/a |
| First autumn frost | 14 September | n/a | 14 September | n/a | n/a |
| Growing days | 100 days | n/a | 100 days | n/a | n/a |
A frost day is a day with a daily minimum at or below 0 C (32 F). The last spring frost and the first autumn frost are the last and first such days of the cold season, and growing days are the days between them. A negative trend for the last spring frost means it comes earlier.
Download the Data
Source: NOAA National Centers for Environmental Information, Global Historical Climatology Network Daily (GHCN-Daily). Records are computed by World Extreme Weather Monitor and are not official NOAA products. (US Government open data (NOAA NCEI)) Data as of 2026-10-14 (14 October 2026). Records are computed by this site and are not official.
Data as of . Last revised (2026-10-14).