Overview Realtime Historical Map View
Heat Advisory
2026-07-18T19:00:00-04:00

* WHAT...Heat index values around 105 expected. * WHERE...Washington DC, and portions of central, northern, and southern Maryland, and central and northern Virginia. * WHEN...From 11 AM this morning to 7 PM EDT this evening. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses.

Sawmill Creek At Glen Burnie, Md Historical Data

Historical Data


Streamflow Range


Date Average 2026 2025 2024 2023 2022 2021 2020 2019 2018 2017 2016 2015 2014 2013 2012 2011
01-01 7.71
01-02 9.76
01-03 6.59
01-04 7.25
01-05 6.65
01-06 6.39
01-07 8.01
01-08 6.23
01-09 6.29
01-10 21.68
01-11 7.54
01-12 7.72
01-13 8.34
01-14 6.74
01-15 6.45
01-16 7.19
01-17 8.16
01-18 6.39
01-19 6.71
01-20 8.47
01-21 6.22
01-22 5.83
01-23 5.67
01-24 6.43
01-25 7.39
01-26 7.25
01-27 6.25
01-28 6.71
01-29 6.59
01-30 5.92
01-31 6.62
02-01 6.49
02-02 6.63
02-03 6.23
02-04 7.77
02-05 7.97
02-06 6.68
02-07 6.56
02-08 6.51
02-09 5.96
02-10 5.89
02-11 6.81
02-12 7.44
02-13 7.67
02-14 7.28
02-15 6.58
02-16 8.08
02-17 7.81
02-18 7.47
02-19 6.58
02-20 6.62
02-21 6.66
02-22 6.59
02-23 7.21
02-24 7.2
02-25 15.9
02-26 6.62
02-27 7.09
02-28 6.31
02-29 7.04
03-01 9.09
03-02 8.32
03-03 7.66
03-04 9.12
03-05 7.5
03-06 7.15
03-07 7.34
03-08 6.45
03-09 6.62
03-10 9.42
03-11 7.33
03-12 6.28
03-13 6.67
03-14 6.61
03-15 6.71
03-16 6.13
03-17 6.47
03-18 6.02
03-19 6.74
03-20 6.16
03-21 6.7
03-22 9.72
03-23 6.27
03-24 7.16
03-25 7.88
03-26 6.62
03-27 6.09
03-28 6.58
03-29 6.67
03-30 7.05
03-31 7.69
04-01 8.52
04-02 6.93
04-03 6.74
04-04 8.43
04-05 6.27
04-06 7.12
04-07 7.45
04-08 7.56
04-09 6.44
04-10 6.91
04-11 5.91
04-12 6.94
04-13 6.08
04-14 6.19
04-15 7.14
04-16 9.8
04-17 6.43
04-18 5.83
04-19 7.34
04-20 6.78
04-21 6.32
04-22 5.73
04-23 7.42
04-24 6.76
04-25 6.91
04-26 7.06
04-27 6.36
04-28 5.76
04-29 7.97
04-30 7.74
05-01 17.06
05-02 6.88
05-03 8.81
05-04 7.07
05-05 6.16
05-06 6.6
05-07 8.78
05-08 7.14
05-09 6.41
05-10 6.03
05-11 7.08
05-12 7.82
05-13 6.33
05-14 10.5
05-15 6.58
05-16 9.43
05-17 10.8
05-18 6.95
05-19 8.38
05-20 7.05
05-21 5.96
05-22 6.41
05-23 7.9
05-24 8.91
05-25 6.15
05-26 6.17
05-27 6.41
05-28 8.13
05-29 7.83
05-30 6.24
05-31 5.76
06-01 5.3
06-02 10.81
06-03 6.52
06-04 7.85
06-05 10.98
06-06 5.95
06-07 5.31
06-08 6.75
06-09 7.56
06-10 5.41
06-11 12.03
06-12 6.5
06-13 6.05
06-14 6.11
06-15 6.55
06-16 5.23
06-17 6.79
06-18 6.24
06-19 8.23
06-20 6.75
06-21 13.46
06-22 5.97
06-23 5.94
06-24 9.2
06-25 5.26
06-26 6.33
06-27 5.02
06-28 9.27
06-29 5.39
06-30 5.11
07-01 6.49
07-02 6.86
07-03 6.62
07-04 5.85
07-05 7.73
07-06 6.57
07-07 12.37
07-08 5.98
07-09 5.74
07-10 6.8
07-11 4.99
07-12 4.96
07-13 4.95
07-14 5.31
07-15 10.83
07-16 7.1
07-17 5.86
07-18 7.11
07-19 4.99
07-20 7.36
07-21 4.93
07-22 31.09
07-23 12.02
07-24 6.78
07-25 20.44
07-26 6.79
07-27 5.69
07-28 7.43
07-29 12.9
07-30 6.23
07-31 12.97
08-01 5.39
08-02 6.7
08-03 5.53
08-04 7.06
08-05 7.18
08-06 5.31
08-07 5.84
08-08 10.62
08-09 5.31
08-10 5.04
08-11 5.61
08-12 6.72
08-13 14.92
08-14 7.65
08-15 7.19
08-16 7.79
08-17 5.94
08-18 9.06
08-19 8.4
08-20 5.91
08-21 5.56
08-22 8.84
08-23 5.82
08-24 4.98
08-25 5.43
08-26 4.79
08-27 6.86
08-28 19.08
08-29 7.0
08-30 5.22
08-31 5.02
09-01 6.39
09-02 11.39
09-03 5.44
09-04 9.2
09-05 4.9
09-06 6.79
09-07 8.46
09-08 26.21
09-09 8.79
09-10 7.9
09-11 5.86
09-12 6.15
09-13 7.22
09-14 5.11
09-15 4.93
09-16 4.78
09-17 4.98
09-18 5.75
09-19 6.14
09-20 5.0
09-21 4.76
09-22 5.32
09-23 4.85
09-24 17.63
09-25 6.17
09-26 5.74
09-27 6.37
09-28 6.67
09-29 8.09
09-30 11.08
10-01 5.76
10-02 5.95
10-03 6.46
10-04 5.41
10-05 6.74
10-06 5.22
10-07 5.03
10-08 5.79
10-09 4.99
10-10 5.73
10-11 6.12
10-12 10.11
10-13 6.59
10-14 5.62
10-15 5.47
10-16 6.93
10-17 5.45
10-18 4.87
10-19 4.76
10-20 5.39
10-21 5.3
10-22 5.02
10-23 5.57
10-24 5.04
10-25 4.7
10-26 6.88
10-27 5.98
10-28 5.32
10-29 5.33
10-30 32.0
10-31 7.53
11-01 7.54
11-02 5.77
11-03 6.05
11-04 5.13
11-05 5.39
11-06 6.05
11-07 6.44
11-08 6.63
11-09 5.15
11-10 6.37
11-11 5.11
11-12 9.71
11-13 6.94
11-14 5.72
11-15 5.21
11-16 9.04
11-17 5.91
11-18 5.87
11-19 5.46
11-20 5.22
11-21 5.12
11-22 7.46
11-23 6.68
11-24 6.32
11-25 9.05
11-26 5.59
11-27 8.35
11-28 5.93
11-29 5.33
11-30 5.63
12-01 9.79
12-02 6.44
12-03 6.49
12-04 5.65
12-05 5.99
12-06 5.69
12-07 7.57
12-08 13.61
12-09 5.97
12-10 7.16
12-11 7.83
12-12 5.82
12-13 5.38
12-14 5.47
12-15 7.18
12-16 13.19
12-17 11.96
12-18 15.78
12-19 6.53
12-20 5.95
12-21 9.64
12-22 6.69
12-23 8.29
12-24 9.97
12-25 8.73
12-26 8.6
12-27 7.98
12-28 11.14
12-29 7.75
12-30 8.04
12-31 6.65

Annual Peak Streamflow


Seasonal Comparison


Oceanic Nino Index