Mill Creek (Anf) California Weather Records (USR0000CMIL)
Record envelope, standing records and threshold days for Mill Creek (Anf) California (USR0000CMIL), California, United States, with 35 years of record.
Key Facts for Mill Creek (Anf) California
- Mill Creek (Anf) California (USR0000CMIL) is a weather station in California, United States at 34.39 latitude and -118.08 longitude, 1,530 m (5,021 ft) above sea level.
- The station reports from 1989 to 2023, 35 years of record.
- 1,464 records set at Mill Creek (Anf) California still stand.
- Records are tracked for tmax, tmin: an element needs 30 years of data to be eligible.
- Mill Creek (Anf) California set a daily record high minimum temperature of 22.8 C (73.0 F) on 10 September 2026 (provisional).
Provisional Records
Records set in the last 60 days are provisional until they clear the revision window.
About the Station
- Location: California, United States, 34.39 latitude, -118.08 longitude.
- Elevation: 1,530 m (5,021 ft).
- Period of record: 1989 to 2023, 35 years.
- Eligible elements: tmax, tmin.
Daily Record Envelope and 2026
19 days at or beyond a record| Month | Highest record high | Lowest record low | 2026 highest maximum | 2026 lowest minimum |
|---|---|---|---|---|
| Jan | 25.3 C (77.5 F) | -12.3 C (9.9 F) | 18.3 C (64.9 F) | -1.1 C (30.0 F) |
| Feb | 30.0 C (86.0 F) | -7.8 C (18.0 F) | 25.0 C (77.0 F) | -4.4 C (24.1 F) |
| Mar | 30.0 C (86.0 F) | -6.7 C (19.9 F) | 30.0 C (86.0 F) | 2.2 C (36.0 F) |
| Apr | 35.5 C (95.9 F) | -6.1 C (21.0 F) | 24.4 C (75.9 F) | 1.7 C (35.1 F) |
| May | 32.8 C (91.0 F) | -4.9 C (23.2 F) | 30.0 C (86.0 F) | 1.1 C (34.0 F) |
| Jun | 40.2 C (104.4 F) | 0.2 C (32.4 F) | 30.6 C (87.1 F) | 8.9 C (48.0 F) |
| Jul | 41.0 C (105.8 F) | 8.9 C (48.0 F) | 35.0 C (95.0 F) | 12.2 C (54.0 F) |
| Aug | 43.7 C (110.7 F) | 7.2 C (45.0 F) | 35.0 C (95.0 F) | 14.4 C (57.9 F) |
| Sep | 39.4 C (102.9 F) | 3.9 C (39.0 F) | 31.7 C (89.1 F) | 9.4 C (48.9 F) |
| Oct | 36.7 C (98.1 F) | -2.2 C (28.0 F) | 31.7 C (89.1 F) | 10.0 C (50.0 F) |
| Nov | 32.3 C (90.1 F) | -6.4 C (20.5 F) | n/a | n/a |
| Dec | 26.9 C (80.4 F) | -11.2 C (11.8 F) | n/a | n/a |
Which Years Hold Standing Records
1,464 standing records| Year set | Standing records |
|---|---|
| 1989 | 3 |
| 1990 | 32 |
| 1991 | 68 |
| 1992 | 103 |
| 1993 | 71 |
| 1994 | 45 |
| 1995 | 34 |
| 1996 | 41 |
| 1997 | 18 |
| 1998 | 28 |
| 1999 | 52 |
| 2000 | 39 |
| 2001 | 38 |
| 2002 | 47 |
| 2003 | 30 |
| 2004 | 36 |
| 2005 | 19 |
| 2006 | 39 |
| 2007 | 42 |
| 2008 | 44 |
| 2009 | 21 |
| 2010 | 24 |
| 2011 | 58 |
| 2012 | 40 |
| 2013 | 34 |
| 2014 | 35 |
| 2015 | 38 |
| 2016 | 29 |
| 2017 | 38 |
| 2018 | 18 |
| 2019 | 33 |
| 2020 | 33 |
| 2021 | 42 |
| 2022 | 32 |
| 2023 | 38 |
| 2024 | 43 |
| 2025 | 46 |
| 2026 | 33 |
Period of Record Coverage
1989 to 2026| Year | Days with data | Share of year | Complete |
|---|---|---|---|
| 1989 | 19 | 5% | No |
| 1990 | 236 | 65% | No |
| 1991 | 359 | 98% | Yes |
| 1992 | 362 | 99% | Yes |
| 1993 | 240 | 66% | No |
| 1994 | 254 | 70% | No |
| 1995 | 363 | 99% | Yes |
| 1996 | 363 | 99% | Yes |
| 1997 | 361 | 99% | Yes |
| 1998 | 309 | 85% | No |
| 1999 | 365 | 100% | Yes |
| 2000 | 366 | 100% | Yes |
| 2001 | 364 | 100% | Yes |
| 2002 | 364 | 100% | Yes |
| 2003 | 365 | 100% | Yes |
| 2004 | 365 | 100% | Yes |
| 2005 | 365 | 100% | Yes |
| 2006 | 364 | 100% | Yes |
| 2007 | 353 | 97% | Yes |
| 2008 | 361 | 99% | Yes |
| 2009 | 242 | 66% | No |
| 2010 | 134 | 37% | No |
| 2011 | 365 | 100% | Yes |
| 2012 | 366 | 100% | Yes |
| 2013 | 362 | 99% | Yes |
| 2014 | 365 | 100% | Yes |
| 2015 | 365 | 100% | Yes |
| 2016 | 365 | 100% | Yes |
| 2017 | 364 | 100% | Yes |
| 2018 | 364 | 100% | Yes |
| 2019 | 363 | 99% | Yes |
| 2020 | 365 | 100% | Yes |
| 2021 | 364 | 100% | Yes |
| 2022 | 364 | 100% | Yes |
| 2023 | 356 | 98% | Yes |
| 2024 | 366 | 100% | Yes |
| 2025 | 365 | 100% | Yes |
| 2026 | 284 | 78% | No |
Latest Records
20| Date | Station | Record | Value | Beat old record by | Old record stood | Significance |
|---|---|---|---|---|---|---|
| 10 September 2026 | Mill Creek (Anf) California, US | daily high min (Provisional) | 22.8 C (73.0 F) | 1.8 C (3.2 F) | 33 years | 17 of 100 (Routine) |
| 6 September 2026 | Mill Creek (Anf) California, US | daily low max (Provisional) | 18.9 C (66.0 F) | 2.2 C (4.0 F) | 24 years | 14 of 100 (Routine) |
| 6 September 2026 | Mill Creek (Anf) California, US | daily low min (Tie, Provisional) | 13.9 C (57.0 F) | tie | 24 years | 2 of 100 (Routine) |
| 26 August 2026 | Mill Creek (Anf) California, US | daily high max (Provisional) | 35.0 C (95.0 F) | 0.6 C (1.1 F) | 27 years | 12 of 100 (Routine) |
| 13 August 2026 | Mill Creek (Anf) California, US | daily low max | 22.8 C (73.0 F) | 2.8 C (5.0 F) | 16 years | 14 of 100 (Routine) |
| 13 August 2026 | Mill Creek (Anf) California, US | daily low min | 14.4 C (57.9 F) | 0.6 C (1.1 F) | 28 years | 12 of 100 (Routine) |
| 8 August 2026 | Mill Creek (Anf) California, US | daily high max (Tie) | 32.8 C (91.0 F) | tie | 1 year | 0 of 100 (Routine) |
| 28 May 2026 | Mill Creek (Anf) California, US | daily low min | 1.1 C (34.0 F) | 2.2 C (4.0 F) | 20 years | 13 of 100 (Routine) |
| 27 May 2026 | Mill Creek (Anf) California, US | daily low max | 9.4 C (48.9 F) | 1.7 C (3.1 F) | 7 years | 7 of 100 (Routine) |
| 12 May 2026 | Mill Creek (Anf) California, US | daily high max | 30.0 C (86.0 F) | 1.1 C (2.0 F) | 20 years | 10 of 100 (Routine) |
| 11 May 2026 | Mill Creek (Anf) California, US | daily high min | 17.8 C (64.0 F) | 0.6 C (1.1 F) | 20 years | 10 of 100 (Routine) |
| 10 May 2026 | Mill Creek (Anf) California, US | daily high max | 30.0 C (86.0 F) | 0.8 C (1.4 F) | 32 years | 13 of 100 (Routine) |
| 29 March 2026 | Mill Creek (Anf) California, US | daily high min | 14.4 C (57.9 F) | 1.1 C (2.0 F) | 11 years | 8 of 100 (Routine) |
| 28 March 2026 | Mill Creek (Anf) California, US | daily high min | 13.3 C (55.9 F) | 0.5 C (0.9 F) | 11 years | 7 of 100 (Routine) |
| 28 March 2026 | Mill Creek (Anf) California, US | daily high max (Tie) | 22.2 C (72.0 F) | tie | 24 years | 2 of 100 (Routine) |
| 27 March 2026 | Mill Creek (Anf) California, US | daily high max | 25.6 C (78.1 F) | 0.6 C (1.1 F) | 11 years | 7 of 100 (Routine) |
| 26 March 2026 | Mill Creek (Anf) California, US | daily high max | 27.2 C (81.0 F) | 4.4 C (7.9 F) | 11 years | 13 of 100 (Routine) |
| 24 March 2026 | Mill Creek (Anf) California, US | daily high min | 16.7 C (62.1 F) | 3.4 C (6.1 F) | 4 years | 11 of 100 (Routine) |
| 24 March 2026 | Mill Creek (Anf) California, US | daily high max | 26.7 C (80.1 F) | 1.7 C (3.1 F) | 0 years | 5 of 100 (Routine) |
| 23 March 2026 | Mill Creek (Anf) California, US | daily high max | 27.8 C (82.0 F) | 3.3 C (5.9 F) | 32 years | 17 of 100 (Routine) |
Climate Trend
30 complete years, 1991 to 2025| Year | Annual mean temperature | Difference from the station mean |
|---|---|---|
| 1991 | 16.5 C | +1.82 C |
| 1992 | 17.5 C | +2.82 C |
| 1995 | 13.3 C | -1.34 C |
| 1996 | 13.9 C | -0.76 C |
| 1997 | 13.7 C | -0.91 C |
| 1999 | 14.1 C | -0.53 C |
| 2000 | 14.2 C | -0.46 C |
| 2001 | 14.2 C | -0.43 C |
| 2002 | 14.4 C | -0.26 C |
| 2003 | 14.5 C | -0.14 C |
| 2004 | 13.7 C | -0.94 C |
| 2005 | 13.6 C | -1.05 C |
| 2006 | 14.0 C | -0.70 C |
| 2007 | 14.6 C | -0.02 C |
| 2008 | 14.8 C | +0.19 C |
| 2011 | 13.5 C | -1.11 C |
| 2012 | 14.8 C | +0.13 C |
| 2013 | 14.7 C | +0.02 C |
| 2014 | 15.7 C | +1.09 C |
| 2015 | 14.9 C | +0.26 C |
| 2016 | 15.1 C | +0.46 C |
| 2017 | 15.4 C | +0.71 C |
| 2018 | 15.3 C | +0.61 C |
| 2019 | 13.3 C | -1.32 C |
| 2020 | 15.2 C | +0.57 C |
| 2021 | 15.5 C | +0.81 C |
| 2022 | 15.3 C | +0.67 C |
| 2023 | 13.2 C | -1.46 C |
| 2024 | 15.3 C | +0.67 C |
| 2025 | 15.3 C | +0.69 C |
The fitted trend in annual mean temperature here over 1991 to 2025 is 0.1 C (-0.3 to 0.4) per decade. The interval includes zero, so the trend is not clearly different from zero. In Fahrenheit: 0.1 F (-0.6 to 0.8) per decade. The slope is a straight line fitted to 30 complete years; the brackets give its 95 percent interval.
| Measure | Per decade (C) | Per decade (F) | Period | Complete years | Reading |
|---|---|---|---|---|---|
| Annual mean temperature | 0.1 C (-0.3 to 0.4) per decade | 0.1 F (-0.6 to 0.8) per decade | 1991 to 2025 | 30 | Not clearly different from zero |
| Mean daily maximum | -0.04 C (-0.48 to 0.39) per decade | -0.1 F (-0.9 to 0.7) per decade | 1991 to 2025 | 30 | Not clearly different from zero |
| Mean daily minimum | 0.2 C (-0.2 to 0.5) per decade | 0.3 F (-0.3 to 0.9) per decade | 1991 to 2025 | 30 | Not 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
1989 to 2026| Measure | Record | Year of the record | Median year | Years with a value |
|---|---|---|---|---|
| Hottest day (TXx) | 43.7 C (110.7 F) | 1993 | 35.6 C (96.1 F) | 38 |
| Coldest night (TNn) | -12.3 C (9.9 F) | 1994 | -5.0 C (23.0 F) | 38 |
Hottest day (TXx)
| Year | Hottest day (TXx) |
|---|---|
| 1989 | 24.1 C (75.4 F) |
| 1990 | 32.7 C (90.9 F) |
| 1991 | 38.6 C (101.5 F) |
| 1992 | 39.8 C (103.6 F) |
| 1993 | 43.7 C (110.7 F) |
| 1994 | 35.5 C (95.9 F) |
| 1995 | 36.3 C (97.3 F) |
| 1996 | 34.3 C (93.7 F) |
| 1997 | 37.2 C (99.0 F) |
| 1998 | 36.7 C (98.1 F) |
| 1999 | 34.4 C (93.9 F) |
| 2000 | 33.9 C (93.0 F) |
| 2001 | 33.9 C (93.0 F) |
| 2002 | 37.8 C (100.0 F) |
| 2003 | 34.4 C (93.9 F) |
| 2004 | 33.3 C (91.9 F) |
| 2005 | 36.1 C (97.0 F) |
| 2006 | 35.6 C (96.1 F) |
| 2007 | 38.3 C (100.9 F) |
| 2008 | 37.2 C (99.0 F) |
| 2009 | 35.0 C (95.0 F) |
| 2010 | 33.9 C (93.0 F) |
| 2011 | 33.3 C (91.9 F) |
| 2012 | 33.9 C (93.0 F) |
| 2013 | 36.1 C (97.0 F) |
| 2014 | 34.4 C (93.9 F) |
| 2015 | 32.8 C (91.0 F) |
| 2016 | 37.2 C (99.0 F) |
| 2017 | 36.1 C (97.0 F) |
| 2018 | 36.7 C (98.1 F) |
| 2019 | 32.8 C (91.0 F) |
| 2020 | 36.7 C (98.1 F) |
| 2021 | 38.3 C (100.9 F) |
| 2022 | 35.6 C (96.1 F) |
| 2023 | 36.1 C (97.0 F) |
| 2024 | 39.4 C (102.9 F) |
| 2025 | 35.0 C (95.0 F) |
| 2026 | 35.0 C (95.0 F) |
Coldest night (TNn)
| Year | Coldest night (TNn) |
|---|---|
| 1989 | -2.9 C (26.8 F) |
| 1990 | -11.2 C (11.8 F) |
| 1991 | -3.7 C (25.3 F) |
| 1992 | -3.3 C (26.1 F) |
| 1993 | -3.7 C (25.3 F) |
| 1994 | -12.3 C (9.9 F) |
| 1995 | -3.7 C (25.3 F) |
| 1996 | -4.1 C (24.6 F) |
| 1997 | -4.1 C (24.6 F) |
| 1998 | -7.2 C (19.0 F) |
| 1999 | -6.1 C (21.0 F) |
| 2000 | -3.3 C (26.1 F) |
| 2001 | -5.0 C (23.0 F) |
| 2002 | -7.8 C (18.0 F) |
| 2003 | -5.0 C (23.0 F) |
| 2004 | -3.9 C (25.0 F) |
| 2005 | -2.8 C (27.0 F) |
| 2006 | -6.7 C (19.9 F) |
| 2007 | -9.4 C (15.1 F) |
| 2008 | -5.0 C (23.0 F) |
| 2009 | -5.6 C (21.9 F) |
| 2010 | -6.1 C (21.0 F) |
| 2011 | -7.8 C (18.0 F) |
| 2012 | -5.0 C (23.0 F) |
| 2013 | -6.7 C (19.9 F) |
| 2014 | -6.7 C (19.9 F) |
| 2015 | -5.0 C (23.0 F) |
| 2016 | -5.0 C (23.0 F) |
| 2017 | -4.4 C (24.1 F) |
| 2018 | -6.7 C (19.9 F) |
| 2019 | -7.2 C (19.0 F) |
| 2020 | -4.4 C (24.1 F) |
| 2021 | -5.6 C (21.9 F) |
| 2022 | -6.1 C (21.0 F) |
| 2023 | -10.1 C (13.8 F) |
| 2024 | -5.0 C (23.0 F) |
| 2025 | -3.3 C (26.1 F) |
| 2026 | -4.4 C (24.1 F) |
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
28 years with a frostAcross 28 years with a frost, the median last spring frost at Mill Creek (Anf) California falls on 20 April and the median first autumn frost on 24 November, which leaves a median of 214 days between them.
Fitted over all years, the growing season changes by -8.9 days per decade at this station.
| Measure | Median, all years | Earliest period | Recent period (1992 to 2025) | Recent against earliest | Fitted trend |
|---|---|---|---|---|---|
| Last spring frost | 20 April | n/a | 20 April | n/a | +6.1 days per decade |
| First autumn frost | 24 November | n/a | 24 November | n/a | -2.8 days per decade |
| Growing days | 214 days | n/a | 214 days | n/a | -8.9 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.
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 2026-10-12 (12 October 2026). Records are computed by this site and are not official.
Data as of . Last revised (2026-10-13).