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Surprise Weather Records (USC00258328)

Record envelope, standing records and threshold days for Surprise (USC00258328), Nebraska, United States, with 49 years of record.

Key Facts for Surprise

  • Surprise (USC00258328) is a weather station in Nebraska, United States at 41.10 latitude and -97.31 longitude, 471 m (1,545 ft) above sea level.
  • The station reports from 1978 to 2026, 49 years of record.
  • 1,464 records set at Surprise still stand.
  • Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
  • Surprise tied a daily record low maximum temperature of 21.7 C (71.1 F) on 24 August 2026 (provisional).

Provisional Records

Records set in the last 60 days are provisional until they clear the revision window.

About the Station

  • Location: Nebraska, United States, 41.10 latitude, -97.31 longitude.
  • Elevation: 471 m (1,545 ft).
  • Period of record: 1978 to 2026, 49 years.
  • Eligible elements: tmax, tmin, prcp, snow, snwd.

Daily Record Envelope and 2026

24 days at or beyond a record
Daily record high and record low at Surprise, with 2026 drawn through them The band shows the record high and record low for each calendar day at Surprise. The lines show the 2026 daily maximum and minimum. 24 days in 2026 matched or passed a record. Temperatures are in degrees Celsius. -40-200204060 JanFebMarAprMayJunJulAugSepOctNovDec
The band shows the record high and record low for each calendar day at Surprise. The lines show the 2026 daily maximum and minimum. 24 days in 2026 matched or passed a record. Temperatures are in degrees Celsius.
Daily record high and record low at Surprise, with 2026 drawn through them
MonthHighest record highLowest record low2026 highest maximum2026 lowest minimum
Jan23.3 C (73.9 F)-31.1 C (-24.0 F)18.3 C (64.9 F)-27.2 C (-17.0 F)
Feb26.1 C (79.0 F)-36.7 C (-34.1 F)23.9 C (75.0 F)-23.3 C (-9.9 F)
Mar36.1 C (97.0 F)-25.0 C (-13.0 F)36.1 C (97.0 F)-15.6 C (3.9 F)
Apr35.6 C (96.1 F)-14.4 C (6.1 F)32.2 C (90.0 F)-5.6 C (21.9 F)
May38.3 C (100.9 F)-2.8 C (27.0 F)33.9 C (93.0 F)-2.8 C (27.0 F)
Jun41.1 C (106.0 F)5.0 C (41.0 F)33.9 C (93.0 F)8.3 C (46.9 F)
Jul41.1 C (106.0 F)6.7 C (44.1 F)36.1 C (97.0 F)15.0 C (59.0 F)
Aug38.3 C (100.9 F)5.0 C (41.0 F)33.3 C (91.9 F)12.2 C (54.0 F)
Sep39.4 C (102.9 F)-2.8 C (27.0 F)n/an/a
Oct35.0 C (95.0 F)-14.4 C (6.1 F)25.0 C (77.0 F)8.3 C (46.9 F)
Nov28.9 C (84.0 F)-23.9 C (-11.0 F)n/an/a
Dec21.7 C (71.1 F)-32.8 C (-27.0 F)n/an/a

Which Years Hold Standing Records

1,464 standing records
Standing records at Surprise by the year they were set 1,464 records at Surprise still stand. 1989 holds the most, with 75. 0204060801987: 421988: 531989: 751990: 471991: 461992: 381993: 471994: 201995: 421996: 441997: 431998: 451999: 362000: 482001: 212002: 412003: 422004: 472005: 512006: 432007: 222008: 102009: 252010: 202011: 352012: 502013: 332014: 532015: 302016: 172017: 312018: 452019: 342020: 322021: 342022: 272023: 212024: 252025: 202026: 291987199119951999200320072011201520192023
1,464 records at Surprise still stand. 1989 holds the most, with 75.
Standing records at Surprise by the year they were set
Year setStanding records
198742
198853
198975
199047
199146
199238
199347
199420
199542
199644
199743
199845
199936
200048
200121
200241
200342
200447
200551
200643
200722
200810
200925
201020
201135
201250
201333
201453
201530
201617
201731
201845
201934
202032
202134
202227
202321
202425
202520
202629

All-Time Record Progression

4 new records
When Surprise set new all-time records 4 all-time records were set at Surprise between 26 December 2009 and 16 February 2021. Each dot is a new record. Record snow depthRecord low minimum temperature26 December 2009: Record snow depth 43.2 cm (17.0 in)7 January 2010: Record snow depth 48.3 cm (19.0 in)15 February 2021: Record low minimum temperature -33.3 C (-27.9 F)16 February 2021: Record low minimum temperature -36.7 C (-34.1 F)201020152020
4 all-time records were set at Surprise between 26 December 2009 and 16 February 2021. Each dot is a new record.
When Surprise set new all-time records
DateKindDetail
2009-12-26Record snow depthRecord snow depth 43.2 cm (17.0 in)
2010-01-07Record snow depthRecord snow depth 48.3 cm (19.0 in)
2021-02-15Record low minimum temperatureRecord low minimum temperature -33.3 C (-27.9 F)
2021-02-16Record low minimum temperatureRecord low minimum temperature -36.7 C (-34.1 F)

Wettest Day of Each Month

Jun: 154.9 mm (6.1 in)
Record daily precipitation for each month at Surprise The wettest day on record for each calendar month at Surprise. The most was 154.9 mm (6.1 in) on 30 June 1986. 050100150200 Jan: 35.6 mm (1.4 in), 29 January 1979 Jan Feb: 54.1 mm (2.1 in), 20 February 1984 Feb Mar: 95.3 mm (3.8 in), 14 March 2021 Mar Apr: 99.3 mm (3.9 in), 19 April 2005 Apr May: 113.0 mm (4.4 in), 12 May 2005 May Jun: 154.9 mm (6.1 in), 30 June 1986 Jun Jul: 109.2 mm (4.3 in), 18 July 1985 Jul Aug: 115.3 mm (4.5 in), 16 August 2017 Aug Sep: 111.8 mm (4.4 in), 9 September 1989 Sep Oct: 67.6 mm (2.7 in), 31 October 1979 Oct Nov: 52.1 mm (2.1 in), 10 November 2020 Nov Dec: 35.6 mm (1.4 in), 16 December 1984 Dec
The wettest day on record for each calendar month at Surprise. The most was 154.9 mm (6.1 in) on 30 June 1986.
Record daily precipitation for each month at Surprise
MonthRecord daily precipitation (mm)Date
Jan35.6 mm (1.4 in)29 January 1979
Feb54.1 mm (2.1 in)20 February 1984
Mar95.3 mm (3.8 in)14 March 2021
Apr99.3 mm (3.9 in)19 April 2005
May113.0 mm (4.4 in)12 May 2005
Jun154.9 mm (6.1 in)30 June 1986
Jul109.2 mm (4.3 in)18 July 1985
Aug115.3 mm (4.5 in)16 August 2017
Sep111.8 mm (4.4 in)9 September 1989
Oct67.6 mm (2.7 in)31 October 1979
Nov52.1 mm (2.1 in)10 November 2020
Dec35.6 mm (1.4 in)16 December 1984

Period of Record Coverage

1987 to 2026
Days with data per year at Surprise 40 years of record at Surprise, 1987 to 2026. 3 years have data for under 90 percent of days and are left out of rankings: 1994, 2025, 2026. 1987: 339 of 365 days1988: 350 of 366 days1989: 351 of 365 days1990: 349 of 365 days1991: 349 of 365 days1992: 357 of 366 days1993: 356 of 365 days1994: 234 of 365 days1995: 357 of 365 days1996: 358 of 366 days1997: 360 of 365 days1998: 361 of 365 days1999: 364 of 365 days2000: 362 of 366 days2001: 356 of 365 days2002: 355 of 365 days2003: 357 of 365 days2004: 364 of 366 days2005: 361 of 365 days2006: 357 of 365 days2007: 359 of 365 days2008: 363 of 366 days2009: 362 of 365 days2010: 338 of 365 days2011: 355 of 365 days2012: 362 of 366 days2013: 363 of 365 days2014: 362 of 365 days2015: 362 of 365 days2016: 363 of 366 days2017: 364 of 365 days2018: 365 of 365 days2019: 364 of 365 days2020: 364 of 366 days2021: 360 of 365 days2022: 362 of 365 days2023: 363 of 365 days2024: 362 of 366 days2025: 304 of 365 days2026: 244 of 365 days19901995200020052010201520202025
40 years of record at Surprise, 1987 to 2026. 3 years have data for under 90 percent of days and are left out of rankings: 1994, 2025, 2026.
Days with data per year at Surprise
YearDays with dataShare of yearComplete
198733993%Yes
198835096%Yes
198935196%Yes
199034996%Yes
199134996%Yes
199235798%Yes
199335698%Yes
199423464%No
199535798%Yes
199635898%Yes
199736099%Yes
199836199%Yes
1999364100%Yes
200036299%Yes
200135698%Yes
200235597%Yes
200335798%Yes
200436499%Yes
200536199%Yes
200635798%Yes
200735998%Yes
200836399%Yes
200936299%Yes
201033893%Yes
201135597%Yes
201236299%Yes
201336399%Yes
201436299%Yes
201536299%Yes
201636399%Yes
2017364100%Yes
2018365100%Yes
2019364100%Yes
202036499%Yes
202136099%Yes
202236299%Yes
202336399%Yes
202436299%Yes
202530483%No
202624467%No

Latest Records

20
Latest records at Surprise
DateStationRecordValueBeat old record byOld record stoodSignificance
24 August 2026Surprise, USdaily low max (Tie, Provisional)21.7 C (71.1 F)tie39 years3 of 100 (Routine)
5 August 2026Surprise, USdaily low max19.4 C (66.9 F)2.3 C (4.1 F)37 years20 of 100 (Routine)
31 July 2026Surprise, USdaily rain24.4 mm (1.0 in)1.5 mm (0.06 in)4 years6 of 100 (Routine)
29 July 2026Surprise, USdaily high min (Tie)21.7 C (71.1 F)tie20 years2 of 100 (Routine)
28 July 2026Surprise, USdaily high max (Tie)36.1 C (97.0 F)tie31 years3 of 100 (Routine)
23 July 2026Surprise, USdaily low max18.9 C (66.0 F)5.5 C (9.9 F)36 years29 of 100 (Routine)
21 June 2026Surprise, USdaily low max21.1 C (70.0 F)1.7 C (3.1 F)24 years14 of 100 (Routine)
20 June 2026Surprise, USdaily low min10.0 C (50.0 F)1.7 C (3.1 F)24 years15 of 100 (Routine)
29 May 2026Surprise, USdaily rain15.2 mm (0.6 in)1.2 mm (0.05 in)40 years16 of 100 (Routine)
19 May 2026Surprise, USdaily low max11.1 C (52.0 F)2.8 C (5.0 F)25 years15 of 100 (Routine)
17 May 2026Surprise, USdaily rain28.4 mm (1.1 in)6.0 mm (0.24 in)8 years10 of 100 (Routine)
2 May 2026Surprise, USmonthly low min (Tie)-2.8 C (27.0 F)tie28 years5 of 100 (Routine)
21 April 2026Surprise, USdaily high max (Tie)31.1 C (88.0 F)tie36 years3 of 100 (Routine)
19 April 2026Surprise, USdaily low min-5.6 C (21.9 F)1.2 C (2.2 F)4 years7 of 100 (Routine)
13 April 2026Surprise, USdaily high min15.6 C (60.1 F)1.2 C (2.2 F)16 years10 of 100 (Routine)
31 March 2026Surprise, USdaily high max31.7 C (89.1 F)4.5 C (8.1 F)13 years13 of 100 (Routine)
26 March 2026Surprise, USdaily high max30.0 C (86.0 F)3.3 C (5.9 F)13 years12 of 100 (Routine)
22 March 2026Surprise, USmonthly high max36.1 C (97.0 F)4.4 C (7.9 F)11 years22 of 100 (Routine)
21 March 2026Surprise, USdaily high max31.1 C (88.0 F)5.0 C (9.0 F)28 years18 of 100 (Routine)
20 March 2026Surprise, USdaily high max28.9 C (84.0 F)0.6 C (1.1 F)8 years6 of 100 (Routine)

Climate Trend

36 complete years, 1987 to 2024
Annual mean temperature at Surprise as warming stripes, 1987 to 2024 One stripe for each of 36 complete years at Surprise, 1987 to 2024. Blue stripes are years cooler than the station's own mean of 10.3 C (50.5 F); red stripes are warmer. The coolest year was 1993, at 7.1 C (44.7 F), and the warmest was 2012, at 12.6 C (54.6 F). The strongest colour marks a difference of 3.2 C (5.8 F). 1987: 11.3 C, +1.0 C from the station mean1988: 10.3 C, 0.0 C from the station mean1989: 9.0 C, -1.2 C from the station mean1990: 10.5 C, +0.2 C from the station mean1991: 10.2 C, 0.0 C from the station mean1992: 9.7 C, -0.6 C from the station mean1993: 7.1 C, -3.2 C from the station mean1995: 9.5 C, -0.8 C from the station mean1996: 8.3 C, -2.0 C from the station mean1997: 9.6 C, -0.7 C from the station mean1998: 10.9 C, +0.7 C from the station mean1999: 10.8 C, +0.5 C from the station mean2000: 10.3 C, 0.0 C from the station mean2001: 10.7 C, +0.4 C from the station mean2002: 11.0 C, +0.7 C from the station mean2003: 10.6 C, +0.4 C from the station mean2004: 11.1 C, +0.8 C from the station mean2005: 12.1 C, +1.8 C from the station mean2006: 12.3 C, +2.0 C from the station mean2007: 11.5 C, +1.2 C from the station mean2008: 9.7 C, -0.6 C from the station mean2009: 9.8 C, -0.5 C from the station mean2011: 10.8 C, +0.5 C from the station mean2012: 12.6 C, +2.3 C from the station mean2013: 9.3 C, -1.0 C from the station mean2014: 9.0 C, -1.3 C from the station mean2015: 10.7 C, +0.4 C from the station mean2016: 11.3 C, +1.0 C from the station mean2017: 10.7 C, +0.4 C from the station mean2018: 9.1 C, -1.2 C from the station mean2019: 9.1 C, -1.2 C from the station mean2020: 10.2 C, 0.0 C from the station mean2021: 10.5 C, +0.2 C from the station mean2022: 9.5 C, -0.8 C from the station mean2023: 10.5 C, +0.2 C from the station mean2024: 10.8 C, +0.6 C from the station mean19871990199520002005201020152020
One stripe for each of 36 complete years at Surprise, 1987 to 2024. Blue stripes are years cooler than the station's own mean of 10.3 C (50.5 F); red stripes are warmer. The coolest year was 1993, at 7.1 C (44.7 F), and the warmest was 2012, at 12.6 C (54.6 F). The strongest colour marks a difference of 3.2 C (5.8 F).
Annual mean temperature at Surprise as warming stripes, 1987 to 2024
YearAnnual mean temperatureDifference from the station mean
198711.3 C+1.04 C
198810.3 C+0.00 C
19899.0 C-1.24 C
199010.5 C+0.20 C
199110.2 C-0.04 C
19929.7 C-0.61 C
19937.1 C-3.20 C
19959.5 C-0.78 C
19968.3 C-1.98 C
19979.6 C-0.71 C
199810.9 C+0.66 C
199910.8 C+0.54 C
200010.3 C-0.02 C
200110.7 C+0.38 C
200211.0 C+0.68 C
200310.6 C+0.35 C
200411.1 C+0.78 C
200512.1 C+1.77 C
200612.3 C+1.99 C
200711.5 C+1.21 C
20089.7 C-0.56 C
20099.8 C-0.50 C
201110.8 C+0.47 C
201212.6 C+2.28 C
20139.3 C-0.98 C
20149.0 C-1.33 C
201510.7 C+0.37 C
201611.3 C+0.97 C
201710.7 C+0.41 C
20189.1 C-1.18 C
20199.1 C-1.19 C
202010.2 C-0.05 C
202110.5 C+0.22 C
20229.5 C-0.80 C
202310.5 C+0.17 C
202410.8 C+0.55 C

The fitted trend in annual mean temperature here over 1987 to 2024 is 0.1 C (-0.2 to 0.5) per decade. The interval includes zero, so the trend is not clearly different from zero. In Fahrenheit: 0.2 F (-0.4 to 0.8) per decade. The slope is a straight line fitted to 36 complete years; the brackets give its 95 percent interval.

Fitted temperature trends per decade at Surprise
MeasurePer decade (C)Per decade (F)PeriodComplete yearsReading
Annual mean temperature0.1 C (-0.2 to 0.5) per decade0.2 F (-0.4 to 0.8) per decade1987 to 202436Not clearly different from zero
Mean daily maximum0.2 C (-0.2 to 0.6) per decade0.3 F (-0.4 to 1.0) per decade1987 to 202436Not clearly different from zero
Mean daily minimum0.1 C (-0.2 to 0.4) per decade0.1 F (-0.4 to 0.7) per decade1987 to 202436Not clearly different from zero

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

1978 to 2026
Yearly extremes at Surprise: the record and the median year
MeasureRecordYear of the recordMedian yearYears with a value
Hottest day (TXx)41.1 C (106.0 F)198837.2 C (99.0 F)40
Coldest night (TNn)-36.7 C (-34.1 F)2021-26.1 C (-15.0 F)40
Wettest day (Rx1day)154.9 mm (6.1 in)198665.3 mm (2.6 in)49
Wettest five days (Rx5day)198.6 mm (7.8 in)198695.5 mm (3.8 in)49
Longest dry spell (CDD)62 days198133 days49

Hottest day (TXx)

Hottest day (TXx) at Surprise by year The hottest day of the year at Surprise, 1978 to 2026. The record is 41.1 C (106.0 F) in 1988, marked on the chart; the median year is 37.2 C (99.0 F). 32343638404219801990200020102020Record: 41.1 C (106.0 F) in 1988
The hottest day of the year at Surprise, 1978 to 2026. The record is 41.1 C (106.0 F) in 1988, marked on the chart; the median year is 37.2 C (99.0 F).
Hottest day (TXx) at Surprise by year
YearHottest day (TXx)
1978n/a
1979n/a
1980n/a
1981n/a
1982n/a
1983n/a
1984n/a
1985n/a
1986n/a
198737.8 C (100.0 F)
198841.1 C (106.0 F)
198936.7 C (98.1 F)
199040.0 C (104.0 F)
199137.2 C (99.0 F)
199233.3 C (91.9 F)
199333.3 C (91.9 F)
199435.0 C (95.0 F)
199541.1 C (106.0 F)
199635.6 C (96.1 F)
199737.2 C (99.0 F)
199837.2 C (99.0 F)
199936.7 C (98.1 F)
200039.4 C (102.9 F)
200137.2 C (99.0 F)
200238.9 C (102.0 F)
200338.3 C (100.9 F)
200436.7 C (98.1 F)
200538.9 C (102.0 F)
200638.9 C (102.0 F)
200738.3 C (100.9 F)
200836.1 C (97.0 F)
200935.6 C (96.1 F)
201037.2 C (99.0 F)
201137.8 C (100.0 F)
201238.9 C (102.0 F)
201338.3 C (100.9 F)
201435.0 C (95.0 F)
201535.6 C (96.1 F)
201636.7 C (98.1 F)
201736.1 C (97.0 F)
201837.2 C (99.0 F)
201935.0 C (95.0 F)
202035.0 C (95.0 F)
202137.8 C (100.0 F)
202237.8 C (100.0 F)
202337.2 C (99.0 F)
202436.1 C (97.0 F)
202533.9 C (93.0 F)
202636.1 C (97.0 F)

Coldest night (TNn)

Coldest night (TNn) at Surprise by year The coldest night of the year at Surprise, 1978 to 2026. The record is -36.7 C (-34.1 F) in 2021, marked on the chart; the median year is -26.1 C (-15.0 F). -40-35-30-25-20-1519801990200020102020Record: -36.7 C (-34.1 F) in 2021
The coldest night of the year at Surprise, 1978 to 2026. The record is -36.7 C (-34.1 F) in 2021, marked on the chart; the median year is -26.1 C (-15.0 F).
Coldest night (TNn) at Surprise by year
YearColdest night (TNn)
1978n/a
1979n/a
1980n/a
1981n/a
1982n/a
1983n/a
1984n/a
1985n/a
1986n/a
1987-17.8 C (0.0 F)
1988-26.1 C (-15.0 F)
1989-32.8 C (-27.0 F)
1990-27.8 C (-18.0 F)
1991-26.7 C (-16.1 F)
1992-19.4 C (-2.9 F)
1993-26.1 C (-15.0 F)
1994-28.3 C (-18.9 F)
1995-25.0 C (-13.0 F)
1996-31.1 C (-24.0 F)
1997-27.2 C (-17.0 F)
1998-26.7 C (-16.1 F)
1999-25.6 C (-14.1 F)
2000-26.1 C (-15.0 F)
2001-25.6 C (-14.1 F)
2002-22.2 C (-8.0 F)
2003-26.1 C (-15.0 F)
2004-23.9 C (-11.0 F)
2005-23.9 C (-11.0 F)
2006-17.8 C (0.0 F)
2007-22.2 C (-8.0 F)
2008-25.6 C (-14.1 F)
2009-20.6 C (-5.1 F)
2010-28.9 C (-20.0 F)
2011-23.3 C (-9.9 F)
2012-20.0 C (-4.0 F)
2013-22.8 C (-9.0 F)
2014-25.0 C (-13.0 F)
2015-26.1 C (-15.0 F)
2016-27.8 C (-18.0 F)
2017-29.4 C (-20.9 F)
2018-29.4 C (-20.9 F)
2019-25.0 C (-13.0 F)
2020-21.1 C (-6.0 F)
2021-36.7 C (-34.1 F)
2022-27.2 C (-17.0 F)
2023-20.6 C (-5.1 F)
2024-30.0 C (-22.0 F)
2025-26.1 C (-15.0 F)
2026-27.2 C (-17.0 F)

Wettest day (Rx1day)

Wettest day (Rx1day) at Surprise by year The wettest day of the year at Surprise, 1978 to 2026. The record is 154.9 mm (6.1 in) in 1986, marked on the chart; the median year is 65.3 mm (2.6 in). 05010015020019801990200020102020Record: 154.9 mm (6.1 in) in 1986
The wettest day of the year at Surprise, 1978 to 2026. The record is 154.9 mm (6.1 in) in 1986, marked on the chart; the median year is 65.3 mm (2.6 in).
Wettest day (Rx1day) at Surprise by year
YearWettest day (Rx1day)
197857.9 mm (2.3 in)
197969.9 mm (2.8 in)
198049.0 mm (1.9 in)
198153.3 mm (2.1 in)
198271.1 mm (2.8 in)
198382.0 mm (3.2 in)
198454.1 mm (2.1 in)
1985109.2 mm (4.3 in)
1986154.9 mm (6.1 in)
1987109.2 mm (4.3 in)
198876.2 mm (3.0 in)
1989111.8 mm (4.4 in)
199083.8 mm (3.3 in)
199196.5 mm (3.8 in)
199257.2 mm (2.3 in)
199344.5 mm (1.8 in)
199461.0 mm (2.4 in)
199533.5 mm (1.3 in)
199645.7 mm (1.8 in)
199749.5 mm (1.9 in)
199850.8 mm (2.0 in)
199944.5 mm (1.8 in)
200095.3 mm (3.8 in)
200171.6 mm (2.8 in)
200258.2 mm (2.3 in)
200367.8 mm (2.7 in)
200433.5 mm (1.3 in)
2005113.0 mm (4.4 in)
200659.7 mm (2.4 in)
200783.6 mm (3.3 in)
200870.1 mm (2.8 in)
200965.3 mm (2.6 in)
201073.7 mm (2.9 in)
201189.2 mm (3.5 in)
201259.9 mm (2.4 in)
201362.7 mm (2.5 in)
201462.2 mm (2.4 in)
201541.7 mm (1.6 in)
201667.3 mm (2.6 in)
2017115.3 mm (4.5 in)
201878.0 mm (3.1 in)
201970.6 mm (2.8 in)
202052.1 mm (2.1 in)
202195.3 mm (3.8 in)
202261.0 mm (2.4 in)
202353.6 mm (2.1 in)
202473.7 mm (2.9 in)
202547.5 mm (1.9 in)
202647.8 mm (1.9 in)

Wettest five days (Rx5day)

Wettest five days (Rx5day) at Surprise by year The wettest five days of the year at Surprise, 1978 to 2026. The record is 198.6 mm (7.8 in) in 1986, marked on the chart; the median year is 95.5 mm (3.8 in). 5010015020019801990200020102020Record: 198.6 mm (7.8 in) in 1986
The wettest five days of the year at Surprise, 1978 to 2026. The record is 198.6 mm (7.8 in) in 1986, marked on the chart; the median year is 95.5 mm (3.8 in).
Wettest five days (Rx5day) at Surprise by year
YearWettest five days (Rx5day)
197876.2 mm (3.0 in)
1979110.8 mm (4.4 in)
198095.5 mm (3.8 in)
198186.3 mm (3.4 in)
198285.0 mm (3.3 in)
1983160.7 mm (6.3 in)
198493.9 mm (3.7 in)
1985109.2 mm (4.3 in)
1986198.6 mm (7.8 in)
1987128.8 mm (5.1 in)
1988104.1 mm (4.1 in)
1989144.1 mm (5.7 in)
1990109.2 mm (4.3 in)
199199.0 mm (3.9 in)
199292.4 mm (3.6 in)
199366.0 mm (2.6 in)
199456.4 mm (2.2 in)
199560.7 mm (2.4 in)
199683.1 mm (3.3 in)
199772.4 mm (2.9 in)
199885.6 mm (3.4 in)
199983.6 mm (3.3 in)
200096.3 mm (3.8 in)
200199.5 mm (3.9 in)
200260.0 mm (2.4 in)
2003140.1 mm (5.5 in)
200463.7 mm (2.5 in)
2005117.1 mm (4.6 in)
200676.5 mm (3.0 in)
2007145.8 mm (5.7 in)
200897.3 mm (3.8 in)
200983.3 mm (3.3 in)
2010103.5 mm (4.1 in)
2011111.1 mm (4.4 in)
201264.7 mm (2.5 in)
201381.0 mm (3.2 in)
2014120.2 mm (4.7 in)
201575.2 mm (3.0 in)
2016114.8 mm (4.5 in)
2017171.7 mm (6.8 in)
201883.6 mm (3.3 in)
2019119.4 mm (4.7 in)
202072.7 mm (2.9 in)
2021125.2 mm (4.9 in)
202294.0 mm (3.7 in)
202398.8 mm (3.9 in)
2024118.9 mm (4.7 in)
202554.9 mm (2.2 in)
202664.0 mm (2.5 in)

Longest dry spell (CDD)

Longest dry spell (CDD) at Surprise by year The longest dry spell of the year at Surprise, 1978 to 2026. The record is 62 days in 1981, marked on the chart; the median year is 33 days. 02040608019801990200020102020Record: 62 days in 1981
The longest dry spell of the year at Surprise, 1978 to 2026. The record is 62 days in 1981, marked on the chart; the median year is 33 days.
Longest dry spell (CDD) at Surprise by year
YearLongest dry spell (CDD)
197831 days
197938 days
198035 days
198162 days
198225 days
198317 days
198423 days
198526 days
198634 days
198750 days
198851 days
198946 days
199025 days
199130 days
199223 days
199323 days
199445 days
199522 days
199633 days
199733 days
199849 days
199945 days
200028 days
200131 days
200238 days
200322 days
200425 days
200535 days
200646 days
200742 days
200822 days
200924 days
201027 days
201125 days
201239 days
201331 days
201429 days
201547 days
201640 days
201735 days
201824 days
201946 days
202039 days
202126 days
202248 days
202326 days
202441 days
202529 days
202637 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

36 years with a frost

Across 36 years with a frost, the median last spring frost at Surprise falls on 28 April and the median first autumn frost on 10 October, which leaves a median of 161 days between them.

Fitted over all years, the growing season changes by +2.3 days per decade at this station.

Frost dates and growing season at Surprise
MeasureMedian, all yearsEarliest periodRecent period (1993 to 2024)Recent against earliestFitted trend
Last spring frost28 Apriln/a28 Apriln/a+1.4 days per decade
First autumn frost10 Octobern/a11 Octobern/a+3.7 days per decade
Growing days161 daysn/a162 daysn/a+2.3 days per decade

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.

Rainfall Return Levels

44 years, 1980 to 2024

A day with at least 66.9 mm (2.6 in) of rain is expected about once in 2 years. A day with at least 156.0 mm (6.1 in) of rain is expected about once in 100 years.

Rainfall return levels at Surprise: the daily rain expected about once in a given number of years
Expected about once inA day with at leastNote
2 years66.9 mm (2.6 in)
5 years89.5 mm (3.5 in)
10 years105.0 mm (4.1 in)
25 years125.1 mm (4.9 in)
50 years140.4 mm (5.5 in)Longer than the 44 years of record
100 years156.0 mm (6.1 in)Longer than the 44 years of record

The levels come from a generalised extreme value (GEV) distribution fitted by L-moments to the wettest-day total of each year, 44 years of values from 1980 to 2024.

A return level is an estimate. It is least reliable for the long periods, 50 and 100 years, and for any period longer than the record behind the fit, where the fit has to reach past the largest day actually observed. It is not a forecast.

The largest wettest-day totals in the fit: 154.9 mm (6.1 in) in 1986; 115.3 mm (4.5 in) in 2017; 113.0 mm (4.4 in) in 2005.

Download the Data

  • Data for Surprise standing records by year: CSV or JSON. Field meanings are on the data page.
  • Data for Surprise threshold days by year: CSV or JSON. Field meanings are on the data page.

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).